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bermad model ir- - - q-b is a hydraulically operated, diaphragm actuated control valve that accurately reduces higher upstream pressure to very low and stable preset downstream pressure. it is a normally closed valve that opens in response to a remote pressure drop command and shuts in the absence of
connections: threaded: , ⁄ , & "l; dn , , & l flanged: , l, , & "; dn , l, & grooved: "; dn pressure rating: bar; psi operating pressure range: - bar; - psi setting range: reducing: - bar; - psi relief: - bar; - psi setting ranges vary according to specific pilot spring. please consult factory. materials...
https://www.bermad.com/wp-content/uploads/2016/06/ir-120-54-3q-b.pdf