Ihe mgbochi azụ azụ, TWS Valve
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Ihe mgbochi azụ azụ, TWS Valve
GỤKWUOBackflow preventer tumadi eji maka mmiri si n'obodo mepere emepe unit na izugbe nsị unit na-amachi pipeline nsogbu nke mere na mmiri eruba nwere ike ịbụ naanị otu ụzọ. Ọrụ ya bụ igbochi nlọghachi azụ nke ọkpọkọ pipeline ma ọ bụ ọnọdụ ọ bụla siphon na-aga azụ, iji zere mmetọ azụ azụ.
