Diaphragm valve with means for adjustably setting the maxium valve opening

摘要: A diaphragm valve has an adjustment device for precisely setting maximum lift. bushing threaded into the bonnet clamping within body forms at its inward end axially facing engagement surface which is engaged by outwardly, formed a shoulder on stem. The can be in or out without disassembling entire to adjust lift precise desired. then locked place such as thread adhesive. Alternatively, stem and provided with radial flange forming engages bonnet.