N'ime ụlọ ọrụ na-ahụ maka ịgbasa mmiri nke ọgbara ọhụrụ, valvụ nlele wafer na-ewu ewu karịa n'ihi nhazi kọmpat ha, ịdị mfe nke nrụnye yana ọnụ ahịa mmalite & mmezi dị ala ma e jiri ya tụnyere ndenye nlele flanged ọdịnala.BVMC na-enye otu efere na okpukpu abụọ wafer valves na ihe dị iche iche.