Kunkle Valve 6021JHT01AAM0050 Valve

For high-pressure steam systems requiring absolute reliability, the Kunkle Valve 6021JHT01AAM0050 is a heavy-duty ASME Section I and VIII certified steam safety relief valve. Engineered with a 2" MNPT inlet and a 2.5" FNPT side outlet, this bronze safety valve is factory-set at 50 PSI with a discharge capacity of 4260 PPH. Unlike standard metal-seated valves, the 6021JH series features a Teflon (PFA) disc insert designed specifically for saturated steam, providing superior leak-free performance and improved seating integrity during thermal cycling. The full nozzle design and stainless steel spring ensure consistent set pressure repeatability, while the dual control rings allow technicians to precisely adjust blowdown and minimize simmer. This National Board certified valve is a standard choice for industrial boiler overpressure protection, steam generators, and pressure reducing stations where maintaining a tight seal is critical for system efficiency.

• Precision Steam Control: The Teflon (PFA) disc insert provides a resilient seal that outperforms metal-to-metal seats in prevent-leak applications on saturated steam.
• Code Compliance: Fully compliant with ASME Section I (V stamp) and Section VIII (UV stamp), meeting rigorous safety standards for power boilers and pressure vessels.
• Heavy-Duty Construction: Features a rugged bronze body and corrosion-resistant SS spring to withstand high-temperature steam environments up to 406°F.
• Field Adjustability: Integrated dual control rings enable exact blowdown control, reducing the loss of steam after a relief event.
• Ease of Installation: A wide hex nozzle provides ample clearance for wrenching, simplifying the fit-up of 2-inch piping in tight mechanical rooms.

What is the difference between the 6010 and 6021 series?
While both belong to the Kunkle 6000 family, the Kunkle 6021 is specifically upgraded with a Teflon disc insert for steam service, whereas the 6010 typically uses a metal seat. This makes the 6021 the preferred choice for systems where tight shut-off is a priority.

Is this valve suitable for air or gas service?
No, this specific configuration with the PFA (Teflon) insert is rated for steam service only. For air or non-hazardous gas applications, a metal-seated or O-ring seated model from the 6000 series should be utilized to ensure material compatibility and proper sealing.

How do I verify the capacity for my boiler?
Ensure your boiler's total BTU or PPH output does not exceed the 4260 PPH rating of this safety relief valve. Always size your relief capacity based on the ASME Boiler and Pressure Vessel Code requirements for your specific installation.

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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.