Hoffman Specialty 401629 Thermostatic Steam Trap

The Hoffman Specialty 401629 Thermostatic Steam Trap is a heavy-duty Series H Float and Thermostatic Trap designed for rigorous condensate management in low-pressure steam systems. This 2 inch NPT steam trap features a robust cast iron body and a .687 inch orifice, engineered to handle a maximum operating pressure of 15 PSI with a discharge capacity of up to 9,800 lbs/hr. As the high-capacity FT015H-8 model, it serves as the direct replacement for the legacy 0036100 unit, ensuring seamless integration into existing steam mains, heat exchangers, and large-scale HVAC piping.

For technicians managing modulating pressure or varying load conditions, the 401629 F&T trap provides continuous condensate drainage without the risk of steam loss. The internal thermostatic air vent utilizes a balanced pressure bellows to rapidly purge non-condensable gases and air during system start-up, preventing air binding and ensuring uniform heat distribution. The versatile H-pattern connection simplifies installation by allowing flexible piping configurations for both same-side and opposite-side inlet/outlet requirements in industrial and commercial steam plants.

Key Benefits for Contractors

• High Condensate Capacity: Engineered for 9,800 lbs/hr, making it ideal for large-scale heat exchange equipment and industrial process steam.
• Superior Air Handling: Integrated Hoffman Specialty FT015H-8 thermostatic bellows ensure quick air venting for faster system warm-up.
• Rugged Construction: Durable cast iron housing with stainless steel internals provides maximum resistance to water hammer and corrosion.
• Simplified Maintenance: The H-pattern design and 2 inch NPT connections allow for straightforward drop-in replacement of the 0036100 model.
• Reliable Performance: Maintains continuous drainage even under low or varying pressure conditions, preventing condensate backup in the steam line.

Common Questions

What is the maximum differential pressure for the 401629?
The Hoffman Specialty 401629 is rated for a maximum operating pressure of 15 PSI. Operating above this threshold can prevent the trap from opening against the internal pressure, leading to condensate flooding.

Can this trap be used on high-pressure steam mains?
No, this is a Series H low-pressure trap. Use it only for systems with a maximum pressure of 15 PSI. For higher pressure requirements, specified high-pressure F&T or bucket traps must be selected to match the system's design load.

Is the 401629 compatible with the 0036100 model?
Yes, the 401629 is the direct functional and physical replacement for the 0036100. It maintains the 2 inch NPT port size and 15 PSI rating required for low-pressure steam service.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.