Watson Mcdaniel wft-125-16-n Float Thermostatic Steam Trap

Product Description

The WATSON MCDANIEL wft-125-16-n is a float thermostatic (F and T) steam trap designed for continuous condensate discharge in steam systems. A stainless steel float ball automatically adjusts the main valve position so condensate exits the trap at the same rate it accumulates, preventing steam loss and waterlogging. The 1-1/2 inch body size suits mid-to-large capacity steam lines found in commercial and industrial settings. Licensed steam system technicians and pipefitters install this trap where reliable, continuous condensate removal is required without manual adjustment.

This trap fits HVAC heating systems, process steam lines, and drip leg applications where steady condensate removal is critical. Its float-actuated valve responds instantly to condensate load changes, making it well suited for variable-load steam systems such as heat exchangers, unit heaters, and steam distribution mains. The thermostatic air vent element handles air and non-condensable gas purging at startup, reducing system warm-up time and improving heat transfer efficiency.

Key Features

• Stainless steel float ball provides continuous, automatic condensate discharge proportional to load
• Integrated thermostatic air vent purges air and non-condensables at startup
• 1-1/2 inch connection size suits mid-to-large steam line applications
• Suitable for HVAC, process, and drip leg installations
• Float-actuated valve design eliminates on-off cycling losses common in bucket traps

Compatibility

Designed as an OEM-style float thermostatic steam trap for use in residential, commercial, and light industrial steam systems requiring continuous condensate drainage at 1-1/2 inch pipe connections.

Installation Notes

Installation should be performed by a licensed pipefitter or steam systems technician familiar with applicable codes such as the ASME B31.1 Power Piping standard. Isolate and depressurize the steam line completely and allow all components to cool before removing the existing trap or installing this unit. Install the trap in the correct orientation as marked on the body, typically with the float chamber positioned to allow gravity drainage into the valve seat. Inspect all unions, gaskets, and connections for proper seating before returning the system to service.

Technical Specifications

• Connection Size: 1-1/2 inches
• Trap Type: Float and Thermostatic (F and T)
• Float Material: Stainless Steel
• Application: HVAC, Process, Drip

Standard Information

• Brand: WATSON MCDANIEL
• Manufacturer Part Number: wft-125-16-n