Flow Couplings

Flow couplings yog ntsia ntawm ob qhov kawg ntawm kev nyab xeeb valve, nws muaj cov phab ntsa tuab los tiv thaiv cov kua dej. Flow couplings ntawm qhov ntev sib txawv yuav tsum tau siv raws li qhov sib txawv ntawm qhov zoo.