Conbraco 61-505-01 Check Valve

The Conbraco 61-505-01 Check Valve is a heavy-duty 1" FNPT solution designed for demanding HVACR and industrial fluid control. Featuring a rugged cast bronze body and a resilient EPDM soft seat, this valve is engineered for bubble-tight shutoff in both liquid and gaseous services. The spring-loaded design ensures positive seating and prevents backflow in high-pressure systems up to 400 PSI CWP. Its straight-through flow configuration minimizes velocity changes and pressure drop, making it ideal for hydronic heating and low-flow applications where noise and vibration reduction are critical. Built with AISI 316 stainless steel springs and a center-guided internal mechanism, the Apollo 61-505-01 requires no radial alignment and maintains high performance in temperatures up to 250°F. Whether you are servicing a commercial boiler or a chemical processing line, this MNPT check valve provides the reliability seasoned contractors expect from American-made flow control hardware.

• Maximum Performance: Rated for 400 PSI (WOG) to handle high-pressure commercial plumbing and HVAC circuits.
• Silent Operation: The EPDM soft seat and spring-actuated check significantly reduce chattering and water hammer in hydronic systems.
• Chemical Resistance: Equipped with an RPTFE ball cone and stainless steel internals for superior durability against corrosion.
• Versatile Mounting: Designed for both horizontal and vertical upward flow installations.
• Reliable Seating: Achieves bubble-tight closure even in low-pressure gaseous applications.

Can this valve be used with steam?
Yes, this bronze series is suitable for saturated steam applications up to 125 PSI, provided the temperature remains within the EPDM limits.

What is the cracking pressure for the 61-505-01?
The standard spring in this model has a cracking pressure of 0.5 PSI, allowing for efficient flow stabilization with minimal resistance.

Is this valve compatible with air compressors?
While it excels in many gas services, it should not be used in reciprocating air compressor discharge lines due to the high-frequency pulsations that can fatigue the internal components.

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.