Kunkle Valve 6021FET01-AM0150 Relief Valve

The Kunkle Valve 6021FET01-AM0150 is a heavy-duty ASME Section I steam pressure relief valve designed for high-demand power boiler applications. Built with a 1" Male NPT inlet and a 1 1/4" Female NPT side outlet, this bronze safety valve is factory-set at 150 PSI to ensure reliable overpressure protection. The 6021 series is distinguished by its Teflon (PFA) seat insert, which provides superior leak-free performance and prevents the disc from sticking to the seat—a common issue in saturated steam environments. With a discharge capacity of 2583 lbs/hr and an "F" orifice (.336 sq. in.), this valve handles significant thermal loads. The stainless steel spring and bronze/brass trim maintain structural integrity under high temperatures up to 406°F. Forged with a plain lever for manual testing and dual control rings for precise blowdown adjustment, this industrial steam relief valve meets rigorous National Board "V" stamp requirements for primary power boiler service.

Key Benefits

• Teflon (PFA) Soft Seat: Essential for leak-free steam service, providing a resilient seal that outperforms metal-to-metal seats in prevent simmer and leakage.
• ASME Section I Certified: Specifically engineered for power boiler overpressure protection, carrying the official National Board "V" stamp.
• Dual Control Rings: Allows technicians to make fine-tuned adjustments to the opening pressure and blowdown for exact system matching.
• High Steam Capacity: Rated for 2583 pounds per hour, making it ideal for large-scale steam generators and pressure vessels.
• Wrenching Service Clearance: Features a wide hex on the valve nozzle for straightforward installation in tight mechanical rooms.

Common Questions

Can the 6021FET01-AM0150 be used for air or gas service?
While the 6000 series includes multi-media models, the Kunkle 6021 with the Teflon (PFA) insert is specifically optimized and rated for steam service only. For air or gas applications, see the 6010 series with metal or O-ring seats.

What is the maximum temperature rating for this valve?
This 150 PSI relief valve is rated for saturated steam temperatures up to 406°F. Exceeding this limit can compromise the Teflon seat integrity and spring tension.

How do I verify if this valve meets my boiler's code requirements?
Check your boiler’s nameplate for the required ASME Code Section. This valve is an ASME Section I component; if your application requires Section IV (for low-pressure heating) or Section VIII (unfired pressure vessels), ensure this capacity and pressure setting align with those specific mandates.

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.