Safety Valves

KNG69 Safety Relief Valve

The KNG69 is an industry standard relief valve used for liquid relief and by-pass. Engineered and designed for heavy duty, industrial and commercial usages. A single piece bonnet to eliminate leakage while allowing for simple cleaning. Easy removable sealed hex-cap to adjust pressure. Valves are calibrated (set to pressure) based on a range of flow-rates (GPM) versus seat size and set pressure. Standard valve is set to pressure to achieve flow rate maximum and minimums within each set pressure range. Temperatures -60°F (-51°C) to 406°F (208°C), low reduced to -320°F (-196°C) with PTFE option, high increased to 425°F (218°C) with stainless option. Features:
  • Field adjustable by simple removal of the hex-cap
  • Metal to metal precision lapped seating
  • Back pressure tested
  • Ease of cleaning and maintenance with simple bonnet removal
  • Stainless steel springs
  • Single piece - 100% leak free bonnet
  • Cryogenic compatible

Captured Exhaust


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

Pressure Range

5 – 450 PSI

Temperature Range

-20°F to 425°F


Brass, Stainless Steel




Non Code Valves