Spirax-Sarco 50933 Trap

The Spirax-Sarco 50933 is a 1-inch FT-125 Float & Thermostatic Steam Trap engineered for heavy-duty condensate management in industrial steam systems. Built with a rugged cast iron body (ASTM A126 Class B), this mechanical trap utilizes a stainless steel float mechanism to provide continuous, modulated discharge of condensate at steam temperature. This design ensures that the steam space remains clear of liquid, maintaining process efficiency even under widely varying loads. The integrated balanced pressure thermostatic air vent is a critical feature, designed to aggressively discharge air and non-condensable gases during start-up and normal operation to prevent air binding. With a maximum operating pressure (PMO) of 125 psig and a maximum operating temperature of 450°F, this F & T trap is ideal for modulating temperature control applications, heat exchangers, and unit heaters. Its parallel piping configuration allows for simplified installation, and the "in-line" maintainability means the internal valve seat and head assembly can be serviced without breaking the pipe connections.

• Continuous Condensate Drainage: The modulating float mechanism ensures immediate removal of condensate as it forms, preventing water hammer and thermal shock.
• High-Efficiency Air Venting: The stainless steel air vent prevents air binding by automatically venting non-condensables, ensuring rapid system warm-up.
• Superior Durability: Equipped with stainless steel internals and a graphite cover gasket to withstand harsh industrial environments.
• Simplified Maintenance: The parallel port design allows for full serviceability of all internal components while the trap remains in the line.
• Versatile Application: Optimized for use with modulating temperature control valves and steam main drip stations where varying pressures are common.

What is the maximum capacity of the Spirax Sarco 50933?
The 1" FT-125 trap is capable of handling condensate loads up to approximately 1,110 pounds per hour, depending on the differential pressure across the seat.

Can this trap be installed in a vertical orientation?
No. For proper operation of the float mechanism, the float arm must move in a vertical plane, requiring the trap to be installed in a horizontal piping run with the arrows on the cover pointing in the direction of flow.

Is the FT-125 suitable for high-pressure superheated steam?
While rated for 450°F, this model is specifically calibrated for a maximum operating pressure of 125 psig. Exceeding the PMO can prevent the float from opening the valve against internal pressure.

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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.