Natural gas can cool quickly when it moves from high pressure to lower pressure. If moisture is present, that temperature drop can create frost, ice buildup, or hydrates around regulators, valves, pilots, chokes, and pipeline equipment.

Cold weather can make the problem worse, but it is not the only cause. Large pressure drops can create freezing conditions even during warmer months. With the right heating solution, operators can manage freeze-ups before frozen equipment causes downtime.

Regulator and Valves Freezing Over: What It Means

When regulator and valves freezing over becomes a repeated issue, the gas temperature is likely dropping low enough for moisture to freeze.

This often happens when gas passes through equipment such as:

• Pressure reducing regulators
• Control valves
• Chokes
• Pilot-operated regulators
• Instrument gas systems
• Pipeline equipment
• Other pressure-reducing components

A larger pressure drop can create a larger temperature drop. A common industry rule of thumb is that natural gas can lose about 6–8°F for every 100 psi of pressure reduction.

One large pressure cut can cool the gas quickly and increase the chance of freezing.

Why Regulators and Valves Freeze

Regulators and valves often freeze because of the Joule-Thomson effect.

The Joule-Thomson effect describes what happens when gas moves through a restriction and drops in pressure. As pressure drops, the gas can lose energy and temperature.

In simple terms:

Gas pressure drops. Gas temperature drops. Moisture freezes. Equipment starts having problems.

This matters in natural gas systems because a regulator or valve may take gas from a much higher pressure to a lower pressure that downstream equipment can use.

A large pressure reduction can make the gas cold enough for moisture to freeze. Ice can then form around or inside the equipment.

That ice can affect equipment performance, restrict flow, or damage components.

Moisture Makes Freeze-Ups Worse

Moisture turns a temperature drop into a bigger problem.

Even small amounts of moisture can freeze when the gas temperature gets low enough. As ice forms, it can build up around the regulator, valve, or pipeline surface.

Moisture can cause:

• Frost or ice buildup
• Frozen valve movement
• Pilot issues
• Blocked ports or passages
• Restricted flow
• Pressure instability
• Equipment that sticks or fails to respond
• Shutdowns or downtime

The ice you see on the outside may only be part of the problem. Inside the valve, regulator, or pipeline, ice can also restrict gas flow.

Can Regulators and Valves Freeze Even in the Summer?

Yes. Regulators and valves can freeze even when the outside temperature is not below freezing.

Freeze-ups do not always start with the weather. A large pressure drop inside the system can cool the gas enough to create ice.

If moisture is present, that temperature drop can create freezing conditions during warmer months.

Equipment can freeze during:

• Cold weather
• Wet weather
• Rain or snow
• Seasonal temperature changes
• High flow conditions
• Large pressure cuts
• Applications with wet gas
• Locations where pressure drops by hundreds of psi

In many applications, freezing is not just a winter problem. It is a pressure drop and moisture problem.

Common Signs of Regulator and Valves Freezing Over

If you are dealing with regulator and valves freezing over, you may notice:

• Frost or ice around the regulator body
• Ice forming around the valve
• Downstream pressure changing unexpectedly
• Reduced or restricted gas flow
• Pilot-operated regulators acting inconsistently
• Valves sticking or not moving correctly
• Equipment working after thawing, then freezing again later
• Shutdowns during cold or wet conditions

Repeated freeze-ups usually point to a system issue. A temporary thaw may get equipment moving again, but the problem can return if the pressure drop, cold gas, and moisture remain.

Why Thawing the Equipment Is Not a Long-Term Fix

Thawing frozen equipment may help in the moment, but it does not solve the cause of the freeze-up.

If the system still has pressure drop, moisture, and cold gas conditions, the regulator or valve can freeze again.

Freeze prevention should focus on managing temperature before ice causes downtime. The goal is not just to melt ice after it forms. The goal is to keep the gas and equipment warm enough so ice is less likely to form.

How Do You Prevent Regulators and Valves From Freezing?

You cannot avoid the Joule-Thomson effect, but you can manage it.

Common ways to manage freezing include:

• Improving pipeline design
• Reducing exposure to harsh weather when possible
• Using insulation where appropriate
• Removing or managing moisture
• Adding heat where the temperature drop happens
• Preheating gas before a large pressure drop

For many natural gas applications, adding heat directly to the equipment or gas stream is one of the most practical ways to reduce freeze-up problems.

That is where catalytic heating comes in.

How Catalytic Heating Helps Prevent Freeze-Ups

Catalytic heating places steady heat where the system needs it most.

Instead of waiting for a regulator or valve to freeze, a catalytic heater can warm the equipment and lower the chance of ice forming.

Operators commonly use catalytic heaters around equipment such as:

• Regulators
• Valves
• Chokes
• Pilots
• Instrument gas systems
• Pipeline equipment

The purpose is simple:

Keep critical equipment warm enough to help prevent freezing, flow restriction, and downtime.

Catco designs Catalytic Heaters to provide focused heat for oil and gas equipment that needs freeze protection.

Where Catco Products Fit In

Catco provides freeze-prevention solutions that help protect natural gas equipment from pressure drop, cold gas, moisture, and harsh field conditions.

Different applications need different types of heat. Some systems need direct heat around a regulator or valve. Others need warmed gas before the pressure drop. Some applications need warm gas delivered directly into pilots or instrumentation.

Here are the main Catco solution paths.

Catco Catalytic Heaters

Catco Catalytic Heaters provide steady radiant heat for equipment that needs freeze protection.

They help warm equipment exposed to cold gas, pressure drops, moisture, and weather conditions.

Catalytic heaters can support larger freeze-prevention systems, including heated enclosures, Pipeline Packs, and instrument gas heating systems.

Catco Heated Enclosure Packages

Catco Heated Enclosure Packages surround equipment like regulators and valves and direct heat where the system needs it.

A heated enclosure helps hold and focus heat around the equipment. As the metal warms, it can help reduce the impact of the Joule-Thomson effect.

Operators commonly use heated enclosures for:

• Regulators
• Valves
• Control equipment
• Pilot-related equipment
• Applications where the pressure drop happens at the equipment

If the freezing problem happens directly at the regulator or valve, a heated enclosure may be the right solution to review.

Catco Pipeline Packs

Catco Pipeline Packs help preheat gas in the pipeline before it reaches a major pressure drop.

This can help when the system needs more heat before the gas reaches a regulator, valve, or other equipment where freezing could happen.

A Pipeline Pack does not focus on one specific valve the same way an enclosure does. Instead, it applies heat to the pipeline itself so the gas has more temperature before it reaches the freeze-risk area.

Pipeline Packs can help when:

• The system has a large pressure drop
• The gas needs heat before regulation
• One equipment enclosure cannot provide enough heat
• The system has downstream freeze risk

In simple terms, an enclosure heats the equipment. A Pipeline Pack helps preheat the gas in the pipe.

Catco Instrument Gas Heaters

A Catco Instrument Gas Heater, also called an IGH, warms gas before it reaches equipment like pilot-operated regulators, instrumentation, and related applications.

The IGH passes process gas through heat exchange tubing inside a heated enclosure. As the gas moves through the heat exchanger, it picks up heat before flowing to the equipment that needs warm gas.

Operators often use Instrument Gas Heaters when cold gas could affect:

• Pilot-operated regulators
• Instrument supply gas
• Control systems
• Sensitive downstream equipment
• Applications that need a steady warm gas supply

This makes the IGH a strong option when the application needs more than outside equipment heat. It can feed warm gas directly where the system needs it.

Catco Steady Heat Controller

In some applications, gas can become too hot after the system warms it. This matters when warm gas feeds pilots, instruments, or equipment with internal components that need protection.

The Catco Steady Heat Controller mixes hot output gas with cold input gas to deliver a more controlled gas temperature.

This helps provide warm gas while reducing the risk of sending gas that is too hot into sensitive equipment.

For applications where consistent outlet temperature matters, the Steady Heat Controller can play an important role.

Simple Breakdown: Why It Freezes and What Helps

Here is the problem in simple terms:

Problem: Your regulator and valves are freezing over.
Cause: Gas pressure drops and the gas temperature falls.
Moisture Risk: Moisture freezes or hydrates form.
Result: Regulators, valves, pilots, and chokes may stop working correctly.
Solution: Add the right freeze-prevention method, such as catalytic heating, a heated enclosure, a Pipeline Pack, or an Instrument Gas Heater.

Which Catco Solution Should You Look At?

The right solution depends on where the freezing happens.

A heated enclosure may be the best place to start when ice forms directly on a regulator or valve.

A Pipeline Pack may help when the gas needs more heat before it reaches a pressure drop.

An Instrument Gas Heater may be the better fit when the system needs warm gas delivered into a pilot, instrument, or regulator.

The Steady Heat Controller can help when the application needs controlled outlet gas temperature.

Every application is different, but the goal stays the same: keep the gas flowing and help prevent freeze-related downtime.

Final Thoughts

So, why are your regulator and valves freezing over?

Most of the time, pressure drop, temperature loss, and moisture create the problem. When natural gas pressure drops, the gas temperature can also drop. If the temperature falls low enough, moisture can freeze and create problems around regulators, valves, pilots, chokes, and pipelines.

This can happen in winter, during wet weather, or even in warmer months when the pressure drop is large enough.

Freeze-ups can create equipment issues, restrict flow, and cause downtime. The right heating solution can help manage those risks before freezing stops the system.

Catco helps provide freeze-prevention solutions for natural gas applications through Catalytic Heaters, Heated Enclosure Packages, Pipeline Packs, Instrument Gas Heaters, and Steady Heat Controllers.

If your regulators or valves are freezing over, Catco can help you review which solution may fit your application.

FAQ

Why is my regulator and valves freezing over?

Your regulator and valves may freeze when gas pressure drops and the gas temperature falls. If moisture is present, that moisture can freeze and create ice buildup or hydrates.

What causes a natural gas regulator to freeze?

Pressure reduction, cold gas, moisture, and the Joule-Thomson effect can cause a natural gas regulator to freeze.

Can valves freeze even when it is not freezing outside?

Yes. Valves and regulators can freeze in warmer weather if the pressure drop is large enough and moisture is present.

What is the Joule-Thomson effect?

The Joule-Thomson effect describes the temperature drop that can happen when gas moves from high pressure to lower pressure.

How much temperature can natural gas lose during pressure reduction?

A common rule of thumb is that natural gas can lose about 6–8°F for every 100 psi of pressure reduction.

How do you stop regulators and valves from freezing?

You can help prevent freeze-ups by managing moisture, improving design, insulating where needed, and adding heat where the gas or equipment loses temperature.

What Catco product helps with frozen regulators and valves?

The best solution depends on the application. Catco solutions may include Catalytic Heaters, Heated Enclosure Packages, Pipeline Packs, Instrument Gas Heaters, and Steady Heat Controllers.

What is the difference between a heated enclosure and a Pipeline Pack?

A heated enclosure focuses heat around a regulator, valve, or piece of equipment. A Pipeline Pack helps preheat the gas in the pipeline before it reaches the equipment.

What does an Instrument Gas Heater do?

An Instrument Gas Heater warms gas before it flows to pilot-operated regulators, instrumentation, or related equipment that needs warm gas to operate reliably.

The post Why Is My Regulator and Valves Freezing Over? appeared first on Catco.

Finding the right CATCO heating solution starts with understanding your system, your equipment, and the conditions your team is trying to manage. Some applications need gas-stream heating, some need flameless heat near exposed equipment, and others need a heated enclosure or weather cover to add another layer of protection.

Instead of starting with one product, it helps to start with the application. What equipment needs support? Where is it installed? What field conditions does it face? From there, CATCO can help match your system to the right product path.

Start by Identifying What You Need to Protect

Field equipment can face a range of challenges depending on where it is installed and how it operates. Cold weather, wind, rain, snow, dust, moisture, and changing operating conditions can all affect equipment performance over time.

Common equipment and system areas that may need heating or protection include:

• Regulators
• Valves
• Pilot systems
• Chokes
• Exposed field components
• Instrument Gas Heaters
• Enclosed equipment packages

The right solution depends on what is exposed, where heat needs to be placed, and whether the application needs gas-stream heating, flameless heat, enclosure protection, or weather defense.

Need to Warm a Gas Stream? Explore Instrument Gas Heaters

If the application needs heat added directly to the gas stream, an Instrument Gas Heater may be the right product path to review.

Instrument Gas Heaters are often used in applications where gas temperature can affect equipment performance. They help support systems such as pilot-operated regulators, valves, and related equipment where gas-stream heating is important.

This product path may be worth reviewing when the issue is connected to the gas stream itself or when the system needs heat before the gas reaches critical components.

Best fit when your system needs:

• Gas-stream heating
• Support for pilot-operated equipment
• Heating before gas reaches key components
• A solution designed around gas flow and equipment performance

Explore Instrument Gas Heaters

Need Flameless Heat Near Equipment? Explore Catalytic Heaters

If the system needs heat placed near exposed equipment, a catalytic heater may be the better fit.

CATCO catalytic heaters are designed to provide dependable flameless heat for field equipment, standalone heating applications, and enclosure-based setups. This makes them useful when the goal is to place heat close to the equipment that needs protection.

This product path is often connected to applications where the equipment itself needs heat nearby rather than heat added directly into the gas stream.

Best fit when your system needs:

• Flameless heat
• Heat placed near exposed equipment
• Support for field equipment protection
• A heating option for standalone or enclosure-based setups

Explore Catalytic Heaters

Need to Protect Exposed Components? Explore Heated Enclosures

For exposed regulators, valves, chokes, and other field components, heated enclosures can help create a more focused protection setup.

A heated enclosure helps position heat closer to the equipment that needs protection. Instead of only heating around the equipment, the enclosure helps create a more controlled area around the components.

This can be especially helpful when equipment is exposed to wind, moisture, cold weather, or harsh field conditions.

Heated enclosures are often a strong option when the application needs more than just a heater. They help bring the heater and the equipment protection strategy together.

Best fit when your system needs:

• Protection for exposed components
• Heat positioned closer to regulators, valves, or chokes
• A more complete freeze-prevention setup
• A solution built around field conditions and equipment layout

Explore Heated Enclosures

Need to Protect the Heater Itself? Explore Weather Covers

Sometimes the equipment is not the only thing that needs protection.

If your system already uses an Instrument Gas Heater, a weather cover can help add another layer of protection around the heater itself. CATCO Weather Covers help protect Instrument Gas Heaters from rain, high winds, snow, dust, and other outdoor exposure that can affect performance over time.

This product path is especially useful in exposed, hard-to-reach, or severe-weather locations where protecting the heater early can help reduce avoidable service calls and downtime.

Best fit when your system needs:

• Added protection around an Instrument Gas Heater
• Defense from rain, wind, snow, or dust
• Support in exposed or remote locations
• A way to protect the heater from outdoor conditions

Explore Weather Covers

Build Around the Application, Not Just the Product

The right heating solution is not only about choosing a product. It is about understanding the full application.

Before selecting a heater, enclosure, or weather cover, it helps to review:

• What equipment needs protection
• Where the equipment is installed
• What environmental conditions it faces
• Whether the need is gas-stream heating, equipment heating, enclosure protection, or weather defense
• What fuel type and space limitations apply
• What issue the team is trying to prevent

By starting with the system, teams can make a more informed decision and build a solution around the actual field need.

CATCO Can Help Review the Right Product Path

If you are not sure which CATCO product fits your application, our team can help review the setup.

Whether your system needs an Instrument Gas Heater, catalytic heater, heated enclosure, weather cover, or a combination of solutions, CATCO can help point your team in the right direction.

The more information you can provide about the equipment, operating environment, fuel type, and exposure conditions, the easier it is to identify the best product path.

Need Help Finding the Right CATCO Heating Solution?

CATCO offers multiple heating and protection solutions designed to match different systems, applications, and field conditions.

If your team is reviewing a system or preparing for challenging operating environments, contact CATCO for product guidance and application support.

Contact CATCO

The post How to Find the Right CATCO Heating Solution for Your System appeared first on Catco.

Gas heater temperature control is critical in preventing overheating and protecting sensitive equipment in gas heating systems. Without proper regulation, excessive heat can damage regulators, seals, and instrumentation, leading to long-term performance issues.

How Gas Heater Temperature Control Prevents Overheating

The difference between stable operation and overheating is regulation.

CATCO systems are designed to deliver consistent, controlled heat through integrated temperature management components that protect the entire system — not just the heater.

Key components include:

Temperature Control Valve

The Temperature Control Valve helps regulate system temperature by adjusting gas flow based on operating conditions.

This prevents temperature spikes and maintains stable heat delivery, protecting downstream components from unnecessary thermal stress.

Steady Heat Controller

The Steady Heat Controller balances heated and ambient gas to maintain consistent control temperature throughout the system.

Instead of allowing heat to accumulate and “run hot,” it helps ensure the temperature remains within safe, functional limits — especially for sensitive regulators, analyzers, and instrumentation.

Pressure & Flow Stability

Low pressure regulators and supporting components ensure inlet pressure remains within design specifications, contributing to stable and predictable heat performance.

When temperature and pressure are balanced, the system operates smoothly.

Why Controlled Heat Matters

Overheating can lead to:

• Seal degradation

• Instrument drift

• Component fatigue

• Reduced operational accuracy

• Long-term reliability issues

These issues often develop gradually — making regulation even more critical.

Stable systems are engineered through control.

Engineered for Continuous Performance

CATCO heating solutions are built to provide:

• Consistent temperature regulation

• Balanced gas flow

• Protection of sensitive equipment

• Long-term operational stability

Reliable heat is essential.

Controlled heat is what protects your system.

Explore CATCO Technical Resources

We’ve expanded our setup guides and product documentation to support proper installation, configuration, and troubleshooting.

👉 View Technical Resources
👉 Explore Accessories
👉 Contact Our Team

The post Your Heater Shouldn’t Just Run. It Should Protect. appeared first on Catco.

The shift ended like any other.
The wind cut across the yard, frost gathering on every surface.
“Nothing we haven’t seen before,” one tech said, locking up and heading out.

By sunrise, the yard was silent.
No hum, no movement — just the hollow stillness of a regulator sealed in ice.

Crews arrived to find the line frozen stiff, pressure gone, and time slipping away.
It didn’t take long to see what happened: trapped moisture, rapid cooling, and a cold front that didn’t wait for morning.

Someone finally said the words no one wants to hear:

“We’ll deal with it tomorrow.”

But tomorrow had already cost them.

⚙️ The Lesson Beneath the Ice

Freeze-ups don’t appear out of nowhere — they build up quietly.
A few degrees, a bit of moisture, one overlooked detail.
And suddenly, everything stops.

It could’ve been prevented with one thing: preparedness.
A quick temperature check. A protective heater.
Even a single heated enclosure could’ve kept that line alive.

It’s not just about what failed — it’s about what was ignored.
Because in this industry, doing nothing is the fastest way to freeze everything.

🟦 CATCO helps operators stay one step ahead — preventing freeze-ups before they ever begin.
No tricks. Just resilience.

🔗 Explore More

• CATCO Heated Enclosure Packages

• CATCO Catalytic Heaters

The post Field Frights: Episode 1 — The Regulator That Froze Overnight appeared first on Catco.

That’s why Catco designs catalytic heaters and enclosures for the full range of vulnerable equipment. From regulators and control valves to electronics and meters, our solutions deliver focused, flameless heat that keeps systems online. We’ve seen firsthand how downtime impacts both production and T&D, and how the right protection restores flow quickly and reliably.

The Winter Challenge: Freeze-Ups in the Field

The Joule-Thomson effect—where gas rapidly cools as it expands—creates ice inside regulators, valves, and other pressure-sensitive components. Combine that with freezing moisture in fuel lines or exposed instruments, and entire systems can grind to a halt.

• Production Sites: Wells lose efficiency, cutting into daily output.

• T&D Systems: Distribution stations fail to maintain pressure, interrupting delivery to downstream customers.

In winter, this isn’t just inconvenient—it’s a major threat to reliability, safety, and revenue.

The Cost of Downtime

When critical equipment freezes, the ripple effect is immediate:

• Lost Production – Every frozen regulator or valve means revenue left in the ground.

• Emergency Repairs – Crews dispatched in storm conditions drive up costs.

• Customer Interruptions – Homes, power plants, and industrial clients depend on steady gas supply.

• Safety Hazards – Pressure swings and unplanned shutdowns put people and equipment at risk.

For operators across both production and distribution, the price of inaction during winter is simply too high.

How Catco Restores Flow

Catco heaters and enclosures are engineered to fight freeze-ups and keep equipment running:

• Catalytic Heaters – Flameless infrared heat for safe use in hazardous areas.

• Instrument Gas Heaters (IGHs) – Deliver steady BTU/hr output right where it’s needed.

• Custom Enclosures – Built to protect regulators, valves, pilots, or full skids in unique setups.

• Accessories – Thermostats, steady heat controllers, and weather covers for added performance.

From the Permian Basin to the Midwest, Catco solutions protect against the worst winter conditions so operators can keep gas moving without interruption.

Conclusion: Be Ready Before the Freeze

Winter freeze-ups don’t just stall equipment—they can cripple entire operations. With Catco’s proven heaters, enclosures, and accessories, you can protect your regulators, valves, pilots, and electronics from freezing and avoid costly downtime.

👉 Don’t wait for the next cold front. Explore Catco’s winter-ready solutions today and keep your systems flowing all season long.

The post Prevent Oil & Gas Equipment Freeze-Ups | Catco Winter Solutions appeared first on Catco.

This blog will break down the Dash 10, Dash 20, and Dash 40, helping you choose the right catalytic heater for your application.

🔹 Dash 10: Simple Heat for Simple Sites

The CATCO Dash 10 Heater comes with a basic junction box. It is not weather sealed and is not rated for hazardous locations.

Best uses for Dash 10:

• Everyday non-hazardous applications

• Simple sites without harsh conditions

• Projects where cost-effective, reliable heating is all you need

👉 If your setup doesn’t require certifications or weatherproofing, the Dash 10 is your go-to catalytic heater.

🔹 Dash 20: Weather Sealed for Harsh Environments

The Dash 20 Heater is one step up from the Dash 10. While the front looks identical, the back features an explosion-proof junction box with weather sealing.

Key advantages of Dash 20:

• Weather-sealed junction box

• Electrical protection in outdoor environments

• Designed for exposed sites that require extra durability

⚠️ Note: The Dash 20 is not certified for hazardous locations, but it bridges the gap between simplicity and durability.

🔹 Dash 40: Built for Hazardous Locations

The CATCO Dash 40 Heater is designed for the most critical environments.

Safety and compliance features include:

• Explosion-proof junction box

• Low temperature shutoff valve

• Thermocouple

• Certified for FM Class I, Division 1 & 2 hazardous locations

This heater is built for maximum safety, compliance, and protection, ensuring safe operation in hazardous areas where reliability is critical.

Comparison Table

Every heater in CATCO’s Dash Series delivers the same flameless, infrared heat you can count on. The difference lies in the junction box, sealing, and certifications that make each model suited to specific environments.

Need help choosing? Contact CATCO — we’ll guide you to the right solution for your application.

The post Understanding CATCO Dash Series Heaters: Dash 10, Dash 20, and Dash 40 appeared first on Catco.

What Is a BTU?

A BTU, or British Thermal Unit, is a unit of energy that measures the heat required to raise the temperature of one pound of water by one degree Fahrenheit. In heaters, BTU/hr refers to the rate at which heat is produced per hour.

For example:

• An 8×8 catalytic heater generates 2,667 BTU/hr.
• A 6×24 catalytic heater delivers 6,000 BTU/hr.
• Pipeline Pack models range from 3,000 to 24,000 BTU/hr, depending on the number and size of heaters installed.

Multiple units can also be installed in series for applications requiring higher BTU output.

How Catco Catalytic Heaters Work

Catco heaters use a flameless catalytic reaction. When fuel (natural gas or propane) and oxygen pass over a heated catalyst, they react to produce infrared heat—without a flame.

This process makes Catco heaters safe to use in hazardous environments while still delivering reliable, consistent heat.

Key Features:

• Flameless Operation – No open flame, reducing explosion risk.
• Durability – Stainless steel enclosures provide protection in tough conditions.
• Easy Installation – Secure directly onto pipes or inside enclosures with U-bolts and hand tools.
• Controlled Heat – Add a thermostat or steady heat controller to regulate output and prevent overheating.

Applications in the Field

Catco heaters are used across a wide range of energy and industrial applications, including:

• Pipeline Packs
• Instrument Gas Heaters
• Gas Conditioning Systems
• Space Heating for small enclosures and work areas

By understanding BTU/hr ratings and how catalytic heaters function, you can confidently choose the right Catco solution for your system’s needs.

👉 Whether you need targeted heat for a regulator or large-scale heating for a pipeline pack, Catco heaters are designed to deliver safe, efficient, and reliable performance.

The post Why BTU/hr Matters in Catalytic Heater Performance appeared first on Catco.

Freezing in gas systems can happen any time—not just in winter. The common cause? The Joule-Thomson Effect.

When gas expands from high to low pressure, temperatures can drop dramatically, resulting in frozen valves, blocked pipelines, and costly shutdowns.

Catco heater enclosures and catalytic heaters are the proven solution to prevent these failures before they happen.

What Is the Joule-Thomson Effect?

The Joule-Thomson Effect occurs when gas passes through an orifice, regulator, or valve from high pressure to low pressure. This rapid expansion causes an immediate temperature drop.

Key facts:

• Gas temperature drops by about 7°F for every 100 psi of pressure loss.

• It happens regardless of outside weather conditions.

• It causes frost, ice, and even total blockage of vital gas flow components.

Learn more about the Joule-Thomson Effect.

How the Joule-Thomson Effect Impacts Equipment

Without protection, freezing can:

• Seize valves and regulators

• Freeze liquids out of gas, clogging lines

• Cause brittle pipes and welds

• Lead to over-pressurization or under-pressurization

• Create no-flow conditions and full system shutdowns

The result? Expensive downtime, safety risks, and repair costs.

How Catco Battles the Freeze

Catco tackles gas regulator freeze-offs with a field-proven two-part system:

1. Enclosures
   Our enclosures block wind, rain, and cold air, creating a microclimate that protects critical components from extreme temperature swings.

2. Catalytic Heaters
   Our flameless catalytic heaters provide consistent, safe heat to prevent frost and ice buildup on regulators and valves.

Combined, this system keeps gas flowing reliably—even under the harshest conditions.

👉 Explore our catalytic heaters.
👉 Learn more about custom heater enclosures.

The Catco Solution: Your Answer to Freezing

At Catco, we understand the freeze risks.
Our engineered solutions provide:

• Protection from wind and environmental exposure

• Even, steady heat output to prevent ice buildup

• Proven performance across North American oil and gas fields

👉 Contact us today to get your freeze prevention system started.

Why Choose Catco?

• Specifically designed for natural gas valves, regulators, and pipelines

• Trusted across the energy industry for reliability and performance

• Simple to install and maintain

• Proven to reduce freeze-related downtime and failures

Conclusion

The Joule-Thomson Effect poses a serious risk for gas system reliability.
With Catco enclosures and catalytic heaters, you can prevent gas freezing and keep your operation running smoothly—anywhere, anytime.

The post Joule-Thomson Effect: Gas Regulator Freeze Prevention | Catco appeared first on Catco.

Outdoor environments can be tough on industrial equipment. If you’re using an instrument gas heater in the field, exposure to elements like high winds, rain, snow, and dust can impact performance and longevity. While Catco heaters are built to withstand the elements, prolonged exposure to harsh weather can eventually lead to damage. That’s where a Catco Weather Cover comes in.

Why a Weather Cover Matters

Even in the most rugged conditions, consistent performance is key. A weather cover provides:

• Enhanced Protection: Shields the heater from wind-driven rain, snowfall, and airborne debris.
• Increased Longevity: Reduces wear and tear, helping your heater last longer.
• Improved Reliability: Keeps your heater running efficiently, minimizing downtime.
• Lower Maintenance Costs: Less exposure to environmental stress means fewer repairs.

By installing a weather cover, you’re investing in the long-term performance of your heating system—especially in areas prone to unpredictable or extreme weather.

Designed to Work With Your Heater

Catco Weather Covers are engineered specifically for our instrument gas heaters. They mount easily on top of the unit, creating a sturdy, protective barrier that doesn’t interfere with heating performance. You’ll get the same dependable heat—just with added protection.

Is It Right for Your Site?

If you operate in areas with:

• High winds
• Freezing temperatures
• Heavy rainfall or snow
• Dust storms or frequent airborne debris

…then a weather cover is a smart addition to your setup.

Get the Protection You Need

Don’t wait until your equipment suffers from weather-related damage. Reach out to our team or visit our website to get more information on weather covers tailored to your heater setup. We’ll help you find the right fit to keep your equipment running longer and more reliably—no matter the weather.

Less downtime. More protection. That’s the Catco way.

The post Protect Your Instrument Gas Heater with a Weather Cover appeared first on Catco.

The reason for developing this range of heated enclosures is that, in oil and gas applications, any valve or regulator may present challenges when faced with some combination of:

• pressure drop
• low ambient temperature
• wet gas

A tailored enclosure package therefore confines the heater’s radiant output to the area of need. The enclosures can include one or more catalytic heaters mounted inside. The stainless-steel enclosure protects the heater itself from contaminants and condensation caused by environmental conditions.

Temperature-sensitive equipment that benefits from heated enclosure packages includes:

• measuring instrumentation
• motor valves
• high-pressure regulators
• gas pipelines
• flow control valves (e.g. choke valves)
• equipment where moisture ingress is undesirable.

Let’s look more closely at heated enclosure packages in the oil and gas industry.

Heated Enclosure Packages in the Oil and Gas Industry

The frequent use of heated enclosures in the oil and gas industry is due to the wide variety items that need freeze protection in extreme conditions or when there is a significant pressure drop in the gas.

When a gas expands from high pressure to low pressure, the temperature of the gas decreases. This is due to the Joule-Thomson effect. If the decrease is significant enough, the regulator can freeze. This causes a buildup of ice on the outside of the pump or inside the regulator.

The enclosure protects the catalytic heater that maintains high body temperature of the equipment  to prevent freezing. It also avoids hydrate forming as the temperature falls. The operation and/or readings then remain consistently accurate.

Overall, the advantages of a heated enclosure package include:

Simplicity

Installation is quick and easy. In most cases, installation is simply a matter of snapping the enclosure package around the appliance or pipe and supplying gas to the heater. A hinge door provides easy access for your product maintenance or repair.

Economy

Heat is directed on the particular object. Energy is not wasted on heating other objects or the air surrounding them because the package enclosure prevents escape.

Customization

Because of the different shapes and sizes of various valves and regulators, different enclosure packages are available for different equipment.

Catco Control

In addition, Catco has now developed their newest product, Catco Control, in order to automate your Catco catalytic heater. The new Catco Control provides you with a solution to managing your catalytic heaters within your data-acquisition systems. When integrated, it supports remote monitoring and operation to prevent downtime in critical infrastructure.

Why Choose a Catco Heated Enclosure Package?

Catco heated enclosure packages alleviate freezing challenges faced in the oil and gas – as well as the industrial and agriculture – industries. Catco focuses on solving our customers’ problems and has a history of personalized and ongoing customer service.

We have a range of catalytic heaters and enclosures. They offer a simple, reliable, and safe way to heat spaces and critical equipment, including in hazardous environments. We’re here to help. Let us know what your project requires, what your challenges are, and what you want to heat. Contact us today!

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