Steam & Condensate Solutions (2023)

Armstrong International’s dependable, hardworking products are built to deliver best-in-class quality, longevity and value—for the most effective steam and condensate system management available anywhere.

Turn to Armstrong for expert steam piping, complete with steam traps, control valves, condensate removal equipment, and so much more. Our specialists can help you: ensure that steam traps are properly sized, selected and in working order; monitor traps and steam quality; and deaerate and maintain condensate at appropriately high temperatures.

Steam and Condensate Products

Steam Trap Management Services Brochure

Steam Trapping and Tracing Equipment

Armstrong’s piping solutions are custom-engineered for easier maintenance, improved reliability and performance, and quicker updates and changes. From steam traps, trap valve stations and Pressure Reducing Valves (PRVs) to steam calculators, condensate pumps, control valves, air vents and more—Armstrong has it all.

Steam & Condensate Solutions (1)

Steam Traps

Armstrong International’s comprehensive range of steam traps provides energy efficiency, minimal steam loss, corrosion resistance, air and CO2 venting, operation against back pressure, freedom from dirt problems, and long, reliable service. Our specialists can ensure that your steam traps are all properly selected, sized, placed, installed and in working order, for the most effective, energy-efficient steam system.

Armstrong offers effective steam trapping for your application, industry and lifestyle of installation, including:

  • Bimetallic superheat steam traps
  • Clean steam thermostatic steam traps
  • Disc steam traps
  • Dual orifice steam traps
  • Float and thermostatic steam traps
  • Inverted bucket steam traps
  • Steam trap options and connectors
  • Thermostatic steam traps
  • Thermostatic wafer steam traps
  • Trap valve stations

View Our Full Range Steam Traps


  • "Choosing a Better Steam Trap" Article
  • Armstrong Steam Trap ID Charts
  • TVS Matrix for Our Full Range of Trap Valve Stations
  • Stainless Steel Trap Valve Station Brochure
  • TVS6000UD Double-Isolation-and-Bleed Trap Valve Station Brochure

Steam & Condensate Solutions (2)

Steam Tracing Systems

Armstrong International simplifies your tracing applications with Steam Distribution and Condensate Collection Manifolds that bring all components—steam traps, steam tracing manifolds, valves—together to reduce installation costs and provide a compact, centrally located assembly that is easily accessible.

View Steam Tracing Systems

(Video) Condensate Recovery and Steam Traps

Steam & Condensate Solutions (3)

Automatic Differential Condensate Controllers

Armstrong International’s automatic differential condensate controllers (DC) are designed to function on applications where condensate must be lifted from a drain point or in gravity drainage applications where increased velocity will aid in condensate drainage.

View Automatic Differential Condensate Controllers

Steam System Monitoring

Armstrong International provides superior, industry-leading solutions for steam system monitoring that includes quality of steam and performance of critical traps or your entire steam trap population.

Wireless Monitoring

Armstrong offers groundbreaking wireless and batteryless solutions that provide accurate, real-time monitoring of your critical process traps or your entire steam trap population. You receive immediate alerts of any problems, enabling you to repair or replace failed traps before they create serious steam quality issues. Payback for prompt replacement of failed traps is significant. All of Armstrong’s wireless monitoring products communicate seamlessly with SAGE®.

Steam & Condensate Solutions (4)


  • AIM and ISA100 Wireless™ Steam Trap Monitoring Brochure
  • Steam Tap Management Products and Services Brochure—With SteamEye®

Steam & Condensate Solutions (5)

Automatic Steam Quality Monitoring

Armstrong’s Steam QM® automatic steam quality monitoring is faster, more accurate, and much safer than traditional manual methods. Our Steam QM® Series provides reliable, state-of-the-art solutions for determining and communicating the dryness fraction of steam, amount of superheat present, concentration of non-condensable gases in steam, and more, for healthcare, food, pharmaceutical, manufacturing, culinary and other industries, throughout the world.

Steam Quality Monitoring Products


  • Steam QM®-1 Steam Quality Monitoring Brochure
  • Steam QM®-3 Steam Quality Monitoring Brochure

Steam Filters

Armstrong’s stainless steam filters are designed for filtering steam to yield low differential pressure at high flow rates and are suitable for process steam and culinary steam. Steam filter elements are commonly regenerated to reduce pressure drop, remove settled contaminants, and prevent permanent contamination buildup. Armstrong provides steam filtration for a wide range of applications, including: aseptic packaging, breweries, chemicals, dairies, electronics, food and beverage, pharmaceuticals, and plastics. From industrial steam to clean steam in sanitary applications, Armstrong can provide the filtration your company and industry requires.

Steam Filters Brochure

(Video) Operation of Steam Operated Condensate return Pump

Condensate Recovery

Armstrong’s condensate recovery solutions allow you to use all of the valuable Btu within your steam system. Depending on pressure, condensate leaving a trap contains approximately 20% of the heat energy transferred at the boiler in the form of sensible heat. Our condensate recovery systems are designed to provide efficiency and savings by helping you reduce costs for fuel/energy consumption, boiler water make-up and sewage treatment, and boiler water chemical treatment.

Condensate Recovery Products

Steam & Condensate Solutions (6)

Steam & Condensate Solutions (7)

Pressure and Temperature Controls (Regulators and Control Valves)

Armstrong helps you manage your steam, air and liquid systems safely and efficiently with a full line of pressure and temperature controls, as well as condensate coolers and drain separators. By maintaining constant pressure or temperature for process control, our hardworking solutions help ensure uninterrupted productivity, day after day.

Pressure and Temperature Control Products


Armstrong offers strainers in wide range of sizes and materials to meet most pipeline straining requirements—all made to Armstrong’s high standards and guaranteed to be free from defects in workmanship or material. Armstrong Y-type strainers are available in cast iron, carbon steel, chrome-moly, forged steel, stainless steel and bronze. Connections come in screwed, socketweld and flanged configurations. Armstrong T-type strainers are available in stainless steel.

Steam & Condensate Solutions (8)

View Y-Type Strainers

(Video) Steam and Condensate System

Steam & Condensate Solutions (9)

T-Type Strainers Brochure

Air/Gas Vents

Armstrong’s float-type air/gas vents adjust instantly to variations in gas flow and pressure. Our air/gas vents handle gas removal from liquids with specific gravities as low as 0.40 and pressure to 2,700 psi (186 bar). Operation is completely automatic, and the simple design and quality mechanism make operation trouble-free and maintenance infrequent. Applications include hydronic heating systems, water service lines, water storage tanks, centrifugal pumps, gas lines, solvent filters and similar equipment. Available in a wide variety of sizes, end connections and construction materials.

Armstrong offers thermostatic air vents for positive venting of air and other non-condensable gases in equipment where air can accumulate in remote sections of chamber-type heat-transfer products such as jacketed kettles, retorts, vulcanizers and jacketed sterilizers.

View Air Vents

Steam & Condensate Solutions (10)

Steam & Condensate Solutions (11)

Liquid Drainers

Armstrong’s hardworking liquid drainers are engineered to remove liquid continuously, automatically and dependably, even in the presence of dirt, grit or oil—without wasting air or gas. Our liquid drainers offer a long, trouble-free operating life, ease of repair, and minimal need for adjustment or maintenance. Liquid drainers may also be known as: condensate drainers, compressed air drains, air traps, compressed air traps, float traps, water traps, or dump valves.

View Liquid Drainers

Radiator Products

Armstrong International is a leading supplier of radiator products, serving the unique needs of hotels, commercial buildings, schools, universities, and virtually anyone who uses steam or hot water radiators for building heat.

Our radiator products come in a range of sizes, body patterns, connection types and body materials to meet widely varying needs in this specialized market. All radiator products and components are manufactured to Armstrong’s exacting standards and guaranteed to be free from defects in workmanship and materials and supported by in-house specialists ready to help with difficult or unusual requirements.

Radiator Products

(Video) Yankee Dryer Steam and Condensate

Steam & Condensate Solutions (12)

Piston Valves

Armstrong Piston Valves are full port forged steel isolation valves with a maximum operating pressure of 136 barg/1973 psig and a maximum operating temperature of 427°C/800°F. The burnished piston and metal reinforced graphite rings provide leak-proof shutoff while allowing an extended operating life, even at higher temperatures. All sealing valve components may be easily replaced in-line.

Our piston valves offer long-term, fire-proof operation, resistance to cavitation, and are designed to ensure actuation, even after many years without operation. Ideal for saturated and superheated steam, and hot water applications, and available in socket weld, BSPT, and NPT end connections. Flanged ends can be supplied upon request. Sizes from 15mm/1/2” NB to 40mm/1-1/2” NB and compatible with API, ASME, IBR, and DIN standards.

View Steam and Condensate Products


  • Armstrong Piston Valves Brochure
  • Stainless Steel Trap Valve Station Brochure

Unfired Steam Generators

Armstrong Unfired Steam Generators (USGs) are designed to produce pressurized clean steam using boiler steam or high-temperature hot water as an energy source. Typical uses for this clean steam include humidification, sterilization, pharmaceutical applications and food processing. Our USGs are designed to provide the correct balance of steaming area, coil size and control components to meet the specified requirements. In the event of a power failure, the over-pressure safety system shuts the unit down by closing both the feed-water and source steam valves.

Armstrong USGs are constructed and stamped in accordance with ASME code. All tanks are registered with the national Board of Boiler and Pressure Vessel Inspectors, and an insurance compliance certificate is furnished. Unfired steam generators that generate 50 psi (3.4 bar) or greater steam pressure will be 100% X-rayed in accordance with the ASME code.

Steam & Condensate Solutions (13)

Armstrong Steam Harness

Armstrong Steam Harness is a comprehensive, fully integrated system package that combines Armstrong’s dependable, long-lasting products and our state-of-the-art technology to reliably deliver the quality of steam your plant needs for a higher level of performance and efficiency. You’ll have real-time access to key parameters using the Human Machine Interface (HMI) with Programmable Logic Controller (PLC). Armstrong’s experts provide mechanical and piping customization, tailored to the specific requirements of your plant.

Learn More About Armstrong Steam Harness

Armstrong Steam Harness Brochure

Discover What Our More than a Century of Steam System Experience Can Do For You

  • Product Search
  • Armstrong University College of Steam Principles
  • Armstrong University College of Steam Generation
  • Armstrong University College of Steam Users
  • Armstrong University College of Condensate Return


What is steam and condensate system? ›

As steam loses heat, it turns back into water. Inevitably the steam begins to do this as soon as it leaves the. boiler. The water which forms is known as condensate, which tends to run to the bottom of the pipe and is carried along with the steam flow.

What is steam condensate used for? ›

Steam is usually generated for one of two reasons: To produce electrical power, for example in power stations or co-generation plants. To supply heat for heating and process systems.

What is the correct arrangement for steam and condensate pipework? ›

Steam lines should ideally be arranged to fall in the direction of flow, at not less than 100 mm per 10 m of pipe (1:100). This slope will ensure that gravity (and the flow of steam), will assist in moving the condensate towards drain points so that the condensate may be safely and effectively removed (see Fig.

What happens when steam comes in contact with condensate? ›

A condensate-induced water hammer is the more powerful of the two types. It is a rapid condensation event that occurs when a steam pocket, being totally surrounded by cooler condensate, collapses into a liquid state.

Is condensate the same as water? ›

When water vapor in the air (often described as humidity) comes into contact with a colder surface, the water changes from a gas to a liquid and collects onto the cold surface. This water vapor in the air that becomes liquid is referred to as condensate.

What type of pipe is used for steam condensate? ›

What is the typical pipe material for steam systems? Pipes for steam systems are commonly manufactured from carbon steel to ASME B 16.9 A106. The same material may be used for condensate lines, although copper tubing is preferred in some industries.

Is condensate water or steam? ›

When the steam condenses in the pipe it is called condensate. This condensate water has very little impurities in it. In fact, condensate is practically 100% pure, clean water… and it's very hot, which makes it the perfect fit for boiler feed water.

Why is condensate so valuable? ›

Not only does the condensate contain heat, but it usually helps us recover treatment chemical in the form of volatile amines. The steam treatment amines are generally the most expensive and most hazardous chemicals in the boiler house. Reducing their usage rate saves even more dollars.

What temperature is steam condensate? ›

Significant fuel savings occur as most returned condensate is relatively hot (130°F to 225°F), reducing the amount of cold makeup water (50°F to 60°F) that must be heated.

What are the rules for condensate piping? ›

Condensate piping shall be of approved corrosion-resistant material and shall not be smaller than the drain connection on the appliance. Such piping shall maintain a horizontal slope in the direction of discharge of not less than one-eighth unit vertical in 12 units horizontal (1-percent slope).

What is the best material for condensate drain? ›

The recommended material to use for a condensate system is stainless steel.

Where should I run my condensate line? ›

You'll find a white PVC or copper pipe located near your outdoor unit—this is where the drain line ends. Near your indoor unit, you'll find a vertical PVC pipe with a cap on it, which acts as the access point for the condensate drain.

What may happen if the condensate of a steam system is not removed? ›

If condensate is not removed, then dangerous water hammer can occur in the steam supply system. Water hammer occurs when slugs of liquid condensate fill the cross-sectional area of the pipe and are propelled by high-velocity steam against the pipe walls (Figure 6).

Is condensate toxic? ›

More serious health effects can occur if condensate is inhaled or swallowed. Natural gas condensate (sweet) may contain variable amounts of benzene and n-hexane. Long-term exposure to these materials has been shown to lead to systemic toxicity such as leukemia and peripheral neurotoxicity.

How can steam condensate system accidents be prevented? ›

Fully open bleed valves, using reduced system pressure, to remove any remaining condensate. Activate cold steam piping slowly at reduced pressure and with trap bleed valves continuously open. To prevent possible condensate accumulation, place blowdown valves before and after a vertical rise.

Can you drink condensate water? ›

The condensed water is pure because when the water originally evaporated into the air, it left its impurities and minerals behind. So providing your coils are clean, you could collect the dripping water and drink it.

Is condensate a gas or liquid? ›

Condensates are the liquid form of these hydrocarbons that take their name from the process of removing them from the gas stream by processing with specific temperature and pressure.

How flammable is condensate? ›

Fire Hazard: Highly flammable liquid and vapor. Vapors may be ignited rapidly when exposed to heat, spark, open flame or other source of ignition.

Can PEX handle steam? ›

No. PEX is plastic and is not rated for steam, which reaches temperatures of 212ºF.

What pressure is steam condensate? ›

The condensate enters the steam trap as saturated water, at a gauge pressure of 7 bar g and a temperature of 170°C. The specific amount of heat in the condensate at this pressure is 721 kJ/kg. After passing through the steam trap, the pressure in the condensate return line is 0 bar g.

Can I use PVC for condensate drain? ›

PVC piping systems are recognized as acceptable for use in condensate drain systems in all major model plumbing codes.

How does steam turn into condensate? ›

Cold surfaces can cause water vapor in the air to cool down, condense and form tiny beads of liquid. The molecules in these miniscule droplets of water are grouped far more closely together than when they were in their gas phase, and exert less pressure—a fact that has some pretty cool physical implications.

What separates condensate from steam? ›

A steam trap is designed to separate and drain condensate, air and other incondensable gases (gases dissolved in water) from a steam system to increase heating efficiency and reduce maintenance costs associated with corrosion, leakage and damage to pipeline components.

How do you get steam condensate? ›

A deaerator head is important to mix returned condensate, flash steam and cold make-up water as they are fed into the feedwater tank. Flash steam is released from hot condensate when its pressure is lowered. Use it, don't waste it. Collect in a flash vessel and use for heating, and recover any associated condensate.

Is condensate highly flammable? ›

Gas condensate and natural gasoline are, like naphtha, (1) readily flammable, (2) will evaporate quickly from most surfaces, and (3) must be very carefully contained at all times.

Is the condensate from boiler toxic? ›

Boiler condensate is notoriously acidic. It's on the lower end of the pH scale, below 7, which means it's going to pose serious problems for your bacteria.

What is the difference between wet gas and condensate? ›

A wet-gas reservoir is defined as producing a single gas composition to the producing well perforations throughout its life. Condensate will form either while flowing to the surface or in lease-separation equipment.

How far will steam push condensate? ›

Steam Condensate Lift using an On-Off Control Scheme

The actual number is 2.31 feet per pound, but 2 feet includes some safety factor and allowance for friction loss.

What temp does steam turn to water? ›

When water is heated at atmospheric pressure, its temperature rises until it reaches 212°F (100°C), the highest temperature at which water can exist at this pressure.

Why is steam condensate corrosive? ›

Oxygen and carbon-dioxide are the main components of the condensate and have a big dissolving intensity in the water also these gases are responsible of the corrosive action.

How far should condensate line be from house? ›

The most experienced inspectors recommend that the a/c condensate be routed no less than 12 inches from the foundation wall to avoid long term implications.

Can you run a condensate pipe into a vent pipe? ›

2021 CODE: 307.2.

Condensate drains shall not directly connect to any plumbing drain, waste or vent pipe. Con- densate drains shall not discharge into a plumbing fixture other than a floor sink, floor drain, trench drain, mop sink, hub drain, standpipe, util- ity sink or laundry sink.

Does condensate need a drain? ›

As the gases cool, condensation is produced. A condensing boiler will produce about 2 litres of condensate an hour at an average temperature of 30-40℃. This condensate needs to drain into your waste water outlet or to a drain via your condensate pipe.

How do I keep my condensate drain clean? ›

Here's a step-by-step guide on how to clean your drain line with vinegar and keep everything operating at peak performance.
  1. Turn off your air conditioner. ...
  2. Locate your condensate drain line. ...
  3. Identify the access point on the drain line. ...
  4. Flush with distilled vinegar. ...
  5. Let the solution sit for 30 minutes. ...
  6. Repeat each month.

Can you drain condensate to ground? ›

The most popular areas we terminate condensate drain lines to is the side of the house and usually about six inches from the ground. And this can be in a planted area that is large enough to accept the amount of drainage, and soak down into the earth.

What clogs a condensate drain line? ›

What Causes a Clogged AC Condensate Drain Line? Because the drain line is an enclosed, wet space, it's a prime location for mold, mildew, and sludge to make it their home. In addition, dirt and debris or even bugs can work their way in. If not drained regularly, all of these items could cause a clog in the line.

Can you drain condensate outside? ›

But that's not necessarily the case! A furnace produces condensate as it works (it's part of the combustion process), and this condensate must be drained and removed to the outside. If the pipe that runs the condensate to the outside of the house freezes over, your furnace won't be able to work!

Do all air conditioners have condensate line? ›

Even if you've noticed it before, rest assured, every central air conditioning system has a drainage line. Also called the condensate drain, the AC drainage line plays an essential role in removing condensation. The condensation, in this case, comes from the evaporator coils.

Can you drain AC condensate into sewer? ›

Different municipalities may require condensate be disposed of to the sanitary sewer, while others may require disposal to building exterior or storm drainage piping. Some AHJ may even require the use of additional equipment to neutralize certain elements/compounds prior to disposing of the condensate.

How do you remove non condensable gases from steam? ›

Air venting device

The air-venting device typically includes a thermostatic balance pressure bellows unit with a very low sub-cool. The device is able to sense air or non-condensable gases due to the resulting temperature suppression.

Can you lift steam condensate? ›

Lifting condensate from a steam main

It is sometimes necessary to lift condensate from a steam trap to a higher level condensate return line (Figure 14.5. 1). The condensate will rise up the lifting pipework when the steam pressure upstream of the trap is higher than the pressure downstream of the trap.

Do you have to neutralize condensate? ›

Condensate neutralizers are crucial for treating acidic condensate from high-efficiency heating appliances. Without a neutralizer, condensate has the potential to corrode a building's foundation, floors, and drainage system. Properly installing a neutralizer is fundamental, but only part of the solution.

Is condensate water harmful? ›

It's absolutely not safe to drink condensates from combustion boilers because they contain toxic compounds. It's also a bad idea to drink air conditioning condensates. Like distilled or demineralised water, they're not necessarily toxic.

What is used to neutralize condensate? ›

The most common material used is limestone or a limestone product. There are two important factors when considering condensate neutralizers – the percentage of calcium carbonate and the amount of surface area of the media. Look for products containing: A minimum of 90% calcium carbonate.

Is condensate water clean? ›

Condensate is considered good water — as pure as distilled water, low in mineral content, and can be used for a number of applications in addition to cooling towers.

What is the pH of condensate water? ›

The condensate expelled from a condensing water heater is acidic with a pH of between 2 and 4, so it is critical that the appropriate materials are used in all piping where this liquid is present.

What PPE is required for steam work? ›

OSHA requires PPE for short-term exposure to hot liquids. This can include gloves, helmets, face shields, boots and aprons. The danger of live steam has no appropriate or acceptable PPE, and so workers must use lockout/tagout procedures, and double-block and bleed the piping for the steam.

What is a condensate system? ›

The steam/condensate systems are an integral part of the water boiler system. The condensate system includes anywhere that the steam condenses to form liquid water. As the vapor leaves the low-pressure turbine it contains droplets of water.

What is the difference between condensation and steam? ›

When water is heated it evaporates, which means it turns into water vapor and expands. At 100℃ it boils, thus rapidly evaporating. And at boiling point, the invisible gas of steam is created. The opposite of evaporation is condensation, which is when water vapor condenses back into tiny droplets of water.

What is condensate in HVAC? ›

Condensate lines drain excess moisture buildup from your Home Comfort System. Humidity is produced whenever air is heated or cooled inside of your Home Comfort System, which in turn produces condensation. This drains into a condensate pan under your inside unit in your attic.

Is condensate liquid or gas? ›

Condensates are the liquid form of these hydrocarbons that take their name from the process of removing them from the gas stream by processing with specific temperature and pressure.

Does steam push condensate? ›

As the steam main is warmed, the condensate temperature rises, causing the liquid expansion trap to close. At the same time, the steam pressure rises, forcing the hot condensate through the 'working' drain trap to the return line.

How do you steam without condensation? ›

how to prevent condensation with a metal steamer: You can prevent condensation from dripping onto your food by taking a large, thin dish cloth or tea towel and tying it around the lid.

Is condensation the same as humidity? ›

Another example is a cold beverage in a warm room when you can see the water droplets form on the glass. This is condensation in its simplest form. Relative humidity is the measure of how much moisture is in the air compared to how much moisture the air can hold at a given temperature.

How often should you clean your condensate line? ›

Repeat each month. Kill any harmful bacteria or buildup and make sure your system continues to operate at peak performance by cleaning your drain line every 30 days.

Why is my HVAC producing too much condensation? ›

What Causes Excessive Condensation in Your AC Unit? Bacteria – Natural bacteria found in your air conditioner could be creating a clog, cause your drain pan to overfill, and leak water. Damaged Condensation Pan – A rusted or damaged condensation pan may be causing water leaks in your home.

Where do you drain condensate from a furnace? ›

The final place to drain your condensate line is the drain line access point. The access point is most often located inside the home near the indoor air conditioner unit. This access point will also be covered with a PVC cap. Pour hot water or vinegar into the access point to flush the drain line from the inside.

Where does steam condensate go? ›

The condensate flows to the bottom where the steam trap will open and allow the condensate to flow to the receiver. There must be a positive differential pressure between the Heat Exchanger and the condensate line so that the condensate will flow out of the Heat Exchanger.

What is water from steam called? ›

Although invisible, water vapour is one component of the wet steam released by a boiling kettle, the visible portion is microscopic droplets of water suspended in the air. Water vapour is water in gaseous instead of liquid form.


1. Steam Series: Condensate Management
(Institution of Mechanical Engineers - IMechE)
2. Steam and Condensate Waterhammer - Part One
(Kelly Paffel)
3. Steam Heating Systems Basics hvacr
(The Engineering Mindset)
4. TLV Solution for Water Hammer in Flashing Condensate Return Systems with Vertical Riser Piping
(TLV - A Steam Specialist Company)
5. Steam Fundamentals
(Institution of Mechanical Engineers - IMechE)
6. Condensate Recovery System
(Virtual Element Studios)
Top Articles
Latest Posts
Article information

Author: Terence Hammes MD

Last Updated: 04/24/2023

Views: 5363

Rating: 4.9 / 5 (69 voted)

Reviews: 84% of readers found this page helpful

Author information

Name: Terence Hammes MD

Birthday: 1992-04-11

Address: Suite 408 9446 Mercy Mews, West Roxie, CT 04904

Phone: +50312511349175

Job: Product Consulting Liaison

Hobby: Jogging, Motor sports, Nordic skating, Jigsaw puzzles, Bird watching, Nordic skating, Sculpting

Introduction: My name is Terence Hammes MD, I am a inexpensive, energetic, jolly, faithful, cheerful, proud, rich person who loves writing and wants to share my knowledge and understanding with you.