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SIZE OF BLOW OFF ASSEMBLY

thread194-456577

SIZE OF BLOW OFF ASSEMBLY

SIZE OF BLOW OFF ASSEMBLY

(OP)
Is there any reference document that provides guideline on sizing of blow off assembly as per main water line diameter? Is there any reference computation? For example, can a 600mm dia. main line have the same size of blow assembly with a 2meter dia. main line?

RE: SIZE OF BLOW OFF ASSEMBLY

depends what you plan to use it for. generally it is for flushing, but it would be difficult to flush a 2 meter dia pipeline with anything other than a very large blow off. if it is for draining, than how fast do you want it to drain? can you use a fire hydrant instead? not sure why you would design a blow off for either 600 or 2000 pipelines. you should loop the line to allow constant circulation and unlikely that flushing would be a problem anyway if designed with proper velocity

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