1。Butterfly valve with manual gear actuator8 n5 r" s; \: n: s8 I5 f+ H0 h
2。Manual globe valve with gland packing turning stem e& I, @; `' q1 z4 |7 t% S
3。Twin plate check valve+ k1 j+ y2 x+ g+ ^3 u2 Q
4.Disc type check valve
這些閥的名稱!!!!!!!!!!!!!!!!!! ...
liuss5201 發表于 2010-1-29 10:27
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