Safety Valves

KNG570 ASME Code Safety Relief Valve

The KNG570 is a high capacity safety valve used for boilers, piping lines and vessel protection. Designed and engineered for heavy-duty industrial use. ASME and National Board Certified for Section XIII as well as CE and CRN Certifications. ASME Section XIII, CE, CRN certified for unfired vessel protection. Used for many applications to protect or relieve pressure for Air / Gas or Steam. Set pressures: Air up to 300 PSI (20.7 Bar), Steam to 250 PSI (17.2 Bar). Features:
  • Designed for durability
  • 5 orifices – 12 sizes of piping options
  • Top guided seating and discharge
  • Full nozzle, high capacity levels
  • Short, tuned blow-down with dual-ring technology
  • Heavy duty hood and lever mechanism
  • Standard 17-7 stainless steel springs

Captured Exhaust


1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2"

Pressure Range

1 – 300 PSI

Temperature Range

-20°F to 425°F




Air, Gas, Steam


Canadian Registration Number (CRN), CE, National Board/ASME Section XIII


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