(pr-3as) cast iron pressure reducing valve class 10k * please name the model no. (pr-3as) when negotiation. * thread: bs21, ai b2.1 or din-259. * max. temperature: 220 ℃ * test pressure: body 20 kgf/cm 2 (hydrostatic) * primary pressure: 0.3 kgf/cm 2 – 10 kgf/cm 2 material: model: pr-3as body cap iron bottom cover iron gasket asbestos diaphragm st.st. seat/disctem steel spring st.st. spring seat steel packing ptfe adjust scr. nut brass bolt steel dimeion mm size inch 1/2 3/4 1 mm 15 20 25 l 93 93 101 h 196 196 202