Iindlela zokuKhetha iValve
Iindlela zokukhetha i-valve ye-1, i-valve yokutshekisha (i-aetv yendlela enye): ngokuqhelekileyo isebenza kumajelo ahlambulukileyo, kungekhona ukuba iqulethe iinqununu eziqinileyo kunye ne-viscosity ye-medium. 2, ilandela ivalve yoxinzelelo oluphantsi lwe-DN50mm (i-aetv yendlela enye) :, kufuneka isebenzise ibhotolo...
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