This standard specifies the structural type, technical requirements, materials, test methods, inspection rules, marking, packaging and transportation of straight-through, direct-flow, and angle hydraulic control valves driven by water and with diaphragms or pistons as sensing elements. This standard is applicable to hydraulic control valves with nominal pressures from PN10 to PN25, nominal sizes from DN50 to DN1000, medium temperatures from 0°C to 80°C, and working medium of clean water. Piston hydraulic control valves can also be implemented as follows.
JB/T 10674-2006 Referenced Document
GB/T 1047 Pipework components—Definition and selection of nominal size*, 2019-03-25 Update
GB/T 1048 Pipework components—Definition and selection of nominal pressure*, 2019-05-10 Update
GB/T 12 Cup head square neck bolts*, 2013-06-09 Update