Stainless Steel Springs Pressure Reducing Valve / Liquid Relief Valve 15 - 50 Mm

Basic Information
Place of Origin: China
Brand Name: KUNKLE
Certification: CE
Model Number: 71S, 171, 171P and 171S
Minimum Order Quantity: 1 set
Packaging Details: One Valve Models 71S, 171, 171P and 171S Safety Relief Valves with NT3000 positioner packed with one fumigation wooden box.
Delivery Time: 7 working days after deposit
Payment Terms: L/C, T/T, Western Union
Supply Ability: 100 sets/Month
Name: Valve Models 71S, 171, 171P And 171S Safety Relief Valves With NT3000 Positioner Brand: KUNKLE
Model: 71S, 171, 171P And 171S Connections: FNPT
Temperature Range: 550°F [288°C] Sizes: 15 To 50 Mm
Pressure Range: -60° To 850°F (-51° To 454°C) Valve Type: Safety Relief Valves
Applications: Pressure Regulation Material: Iron, Steel, Stainless Steel
High Light:

back pressure regulator


fisher relief valve

Valve Models 71S, 171, 171P and 171S Safety Relief Valves



  • Suitable for back pressure to 50 psig (3.45 barg)
  • 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.


• Overpressure relief and protection of pumps, tanks, lines and hydraulic
systems. Acid, caustic, ammonia and other corrosive liquids requiring iron,
steel or stainless steel materials.
• Pressure regulation.
• Bypass relief.
• All 316 stainless steel Models 171S suitable for sanitary/edible corrosive applications.




Product Name Valve Models 71S, 171, 171P and 171S Safety Relief Valves 
size ½” to 2” [15 to 50 mm]
Model 71S, 171, 171P and 171S
Connections FNPT
Temperature range 550°F [288°C]
Pressure range 400 psig [27.6 barg]
Valve Type Safety Relief Valves
Applications Pressure regulation
Material Iron, Steel, Stainless Steel

Product Description


Kunkle Valve Models 71S, 171, 171P and 171S Safety Relief Valves


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


Company Information



Our Service

     1.Swift delivery

     For common parts, we can deliver the goods within 3 days

    2.Original products

     All the products we sell are from origin manufacturer. We will submit all the manufacturer documentation while we finish delivery.

    3.Quality Assurance

    4.Technical Support

     Including inspection,repair and maintenance, we can give all kinds of technical support.

    5.Quickly responce

     Our staffs will keep 24h online and answer your question very quickly.

A variety of controls for cryogenic systems including liquid and gas line-pressure buildup regulators, economizer (heat leak) back pressure valves, temperature safety valves, combination valves, shut-off valves and finalline/service-line regulators.

Contact Details
Edward Zhao

Phone Number : 15121023088

WhatsApp : +8615121023088