Inkcazelo emfutshane:

Iimpawu zeMveliso: Ibhokisi yegiya ye-spur yesandla isetyenziselwa ikakhulu iivalve zenethiwekhi yombhobho, njengevalve yesango, ivalve yeglowubhu kunye nepenstock, inokufakwa kuyo nayiphi na i-engile, ubungakanani bevili lesandla bunokuyila ngokweprojekthi yomthengi. Ngokubanzi umlinganiselo ngu-3, ​​3.5, 4.8, unokwenziwa ngokwezifiso ngokweemfuno zexesha lokusebenza, udinga naluphi na ulwazi, wamkelekile uqhagamshelane nathi.