I-1, Xa ufaka i-valve, kufuneka ucoce umngxuma ongaphakathi kunye nokutywinwa kwendawo, nokuba iibholiti zokuxhuma ziqiniswe ngokulinganayo, kwaye ukhangele ukuba ukupakisha kucinezelekile.2, ukufakwa kwevalve kukwimeko evaliweyo.I-3, ivalve yesango yobukhulu obukhulu, i-pneumatic...
Funda ngokugqithisileyo