Kunkle 541/542/548

Compact brass air and gas safety valves for compressors, intercoolers, aftercoolers, instrument and control air lines and air receivers. 1/4″ and 1/2″ male NPT, 3 to 400 psig depending on model, with a manual lift ring and factory seal. The three models differ by seat: Buna-N on the 541, Viton on the 542 for higher temperatures, and a stainless steel ball seat on the 548 for the widest range at -60°F to 400°F. ASME Section VIII and XIII ‘UV’, National Board certified at 15 psig and above.