Kunkle Safety Relief Valve 171/171S - Fast & Free Shipping!

Kunkle Safety Relief Valve 171/171S - Fast & Free Shipping!

Regular price $421.00 Sale

Extra heavy, rugged construction non-code liquid relief valves with a variety of model options to meet specific applications.

• Suitable for back pressure to 50 psi (3.45 bar).
• Seats lapped for optimum performance.
• Spherical pivot between disc and spring corrects misalignment and compensates for spring side thrust.
• Stainless steel springs.
• Tested and inspected for pressure setting and leakage.
• All SS 316 model 171S suitable for sanitary applications, depending on requirements.
1. Back pressure increases set pressure on a one to one basis, and reduces capacity. Back pressure in excess of 10% of set pressure is not recommended.

Technical Data: 

Suitable for overpressure relief, pressure regulation, by-pass relief and protection of pumps, tanks, lines and hydraulic systems containing acid, caustic, ammonia and other corrosive liquids requiring iron, steel or SS materials.

Connections: FNPT
Temperature range:
Models 171, 171P, 171S: -20°F to 550°F
(-29°C to 288°C)
Pressure range:
Models 171, 171P, 171S: 1 to 400 psi
(.07 to 27.6 barg)

Model 171: carbon steel with SS seat and disc. Pressure-tight hood.
Model 171P: as model 171 with packed lift lever.
Model 171S: all 316 SS construction including spring. Available with pressure-tight hood or packed lift lever.

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