Kunkle Model 140 Liquid Relief Valve

Safety And Relief Products

Stainless steel liquid relief valve with a side outlet suitable for a variety of applications up to 300 psig (20.7 barg)


  • Compact design requires minimum installation space.
  • Angle lapped seat provides tight shutoff.
  • Tested and inspected for pressure setting and leakage.
  • Female NPT inlet option available.
  • 50 psig (3.45 barg) maximum back pressure.

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.

General Application

Model 140 is a general utility valve of all stainless steel construction, including spring, for non-code liquid applications.

Technical Data

Connections: Threaded NPT
Temperature range: -60° to 406°f (-51° to 208°C)
Pressure range: 10 to 300 psig (.69 to 20.7 barg)