Parker Hannifin
Parker Partek MV-11 Manual 2-Way On/Off Diaphragm Valve, PFA body, machined mod PTFE diaphragm, straight through, 1/2 Parflare, PVDF nut, 1/4-28 UNF test port, 0.50 in orifice @ 2.3 Cv, 4 gpm @ 4 psid, vac to 100 psig @ -0 to 150 deg F fluid temp.