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Armstrong Float & Thermostatic Steam Traps

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What is an Armstrong Float and Thermostatic Steam Trap?

An Armstrong float and thermostatic steam trap combines float-operated condensate drainage with thermostatic air venting. Its float responds to changing condensate levels, opening the discharge valve to remove condensate continuously while maintaining a water seal against live steam loss.

The thermostatic vent releases air and non-condensables during startup, then closes when steam reaches the vent. An Armstrong F&T steam trap can provide reliable drainage under low and various loads, supporting efficient heat transfer and steam-system performance.

Armstrong Float and Thermostatic Steam Trap Series We Offer

Control Specialties stocks and sources Armstrong F&T steam trap models across a broad range of applications, including:

Series A and AI: General-purpose industrial traps for heat exchangers, unit heaters, and process equipment.

Series B: Compact traps for low and medium-pressure steam mains, converters, and heating equipment.

Series JD and KD: High-capacity models for large heat exchangers, air handling units, and demanding condensate loads.

Series L, M, LS, MS, LSS, and MSS: High-capacity cast iron and stainless steel models for continuous and heavy condensate loads in commercial and industrial systems.

Industries We Serve with Armstrong Float and Thermostatic Steam Traps

Armstrong F&T steam traps support reliable condensate management across diverse commercial and industrial applications, including:

  • Commercial and Institutional HVAC: Continuous drainage supports efficient operation of unit heaters, air handling units, and heating coils in schools, hospitals, and offices.
  • Process Heating and Heat Exchangers: Modulating discharge accommodates changing condensate loads in heat exchangers, converters, and process equipment.
  • Food and Beverage Processing: Effective air venting and condensate removal help maintain consistent temperatures in jacketed kettles, cookers, and steam-heated equipment.
  • Chemical and Industrial Manufacturing: High-capacity models accommodate demanding condensate loads across process steam systems.
  • Absorption Chillers and Humidification: Low-differential operation supports equipment requiring prompt condensate removal for reliable performance.

Why Choose Control Specialties for Armstrong Float and Thermostatic Steam Traps?

Control Specialties helps facility, maintenance, and process teams source genuine Armstrong F&T steam traps with selection, sourcing, and technical support.

  • Complete Armstrong Range: Along with Armstrong F&T steam traps, we supply Armstrong inverted bucket traps, Armstrong thermostatic traps, and Armstrong CD Series disc traps.
  • Repair Support: Armstrong trap repair kits help extend trap service life and simplify maintenance.
  • Upgrade Support: We help identify suitable Armstrong traps for system upgrades and retrofits.
  • Responsive Sourcing: We support timely procurement for planned maintenance and critical operations.
  • Technical Guidance: From selection and sizing to pressure and capacity, our team provides practical support. See our guide on how to choose the right steam trap.
  • Industrial Expertise: We help commercial and industrial customers source quality steam traps and components from leading manufacturers.

Keeping condensate under control is essential for reliable steam-system performance. Control Specialties supplies genuine Armstrong float and thermostatic steam traps for commercial, institutional, and industrial applications, helping customers address condensate drainage and air-removal requirements.

Do you need help selecting the right trap? Share your existing part number, operating pressure, condensate load, and connection size with our team. We can help identify a suitable solution from our range of steam traps.

Talk to our experts today for assistance with your application.

Frequently Asked Questions (FAQs)

How does an Armstrong float and thermostatic steam trap prevent steam loss?

The float mechanism maintains a water seal that helps prevent live steam from escaping through the condensate outlet. Proper operation allows condensate to discharge continuously while retaining steam within the system.

Why is air venting important in a float and thermostatic steam trap?

Air and other non-condensable gases can restrict heat transfer and slow equipment startup. The thermostatic vent automatically releases these gases, helping steam reach heat-transfer surfaces more quickly and efficiently.

Can an Armstrong F&T steam trap operate under fluctuating steam loads?

Yes. Its float responds continuously to changing condensate levels, making the trap well suited to equipment with modulating or variable loads. This helps maintain effective condensate drainage as operating conditions change.

What are signs that an F&T steam trap may need maintenance?

Common warning signs include poor heat transfer, waterlogging, unusual temperature changes, steam leakage, or condensate backup. These symptoms can indicate a trap or system issue that should be evaluated before performance declines further.

How can I identify an Armstrong F&T steam trap from its markings?

Check the trap body, nameplate, or identification tag for the series, model, size, pressure rating, and connection details. Sharing these markings with Control Specialties can make it easier to verify the correct product.

What is the difference between a float and thermostatic steam trap and an inverted bucket steam trap?

A float and thermostatic steam trap uses a float to continuously discharge condensate and a thermostatic element to remove air. An inverted bucket steam trap uses a bucket mechanism to open and close a valve based on condensate and steam levels.