Spirax-Sarco 54771C Trap

The Spirax-Sarco 54771C is a performance-grade TD52L 1/2" NPT thermodynamic steam trap engineered for reliable condensate management in high-pressure applications. Constructed with a ruggered stainless steel body and an ASTM A743 Grade CA40F cap, this low-capacity disc trap handles operating pressures up to 600 psig and temperatures reaching 800°F. Designed for steam main drainage and tracer lines, the thermodynamic disc cycles periodically to discharge condensate near steam temperature, ensuring the system remains free from water hammer and air binding. The unit features an electroless nickel-plated finish for superior corrosion resistance and a ceramic insulator to minimize rapid cycling in outdoor installations subject to freezing. For optimal performance, the 54771C should be installed in a horizontal orientation, though it supports vertical discharge for freeze protection. With only one moving part, this 1/2 inch disc trap provides long-term stability and is easily maintainable without disturbing the existing piping infrastructure.

• Hardened Stainless Steel Disc: Provides high resistance to superheat and water hammer for extended service life in demanding industrial environments.
• Corrosion-Resistant Construction: The electroless nickel-plated body avoids material degradation in harsh process or outdoor settings.
• Integral Ceramic Insulator: Reduces the effects of ambient temperature on the trap's cycle rate, preventing premature wear and energy loss.
• Simplified Maintenance: The in-line horizontal flow pattern allows for rapid inspection and disc replacement without removing the trap body from the line.
• Versatile Application: Rated for 600 psi steam systems, making it suitable for laundry equipment, kitchen process lines, and refinery tracing.

What is the minimum operating pressure for the TD52L?
For satisfactory operation and a positive seal, a minimum inlet pressure of 3.5 psig is required.

Can this trap be installed in freezing conditions?
Yes, when installed vertically with a downward discharge, the Spirax-Sarco TD52L is freeze-resistant, provided the discharge piping is self-draining.

What is the maximum allowable back pressure?
To ensure the thermodynamic disc seats correctly, the back pressure should not exceed 80% of the inlet pressure.

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.