DBN Series Block & Bleed Needle Valves The DBN Series of barstock Block & Bleed Needle valves provide an economical solution for systems that require this type of valve. The DBN Series of barstock Block & Bleed Needle valves provide an economical solution for systems that require this type of valve. Available in sizes from 1/4" to 1" and threaded ends NPT/BSPP/BSPT. View PDF Datasheet Want to know more? If you would like to inquire further about the DBN Series Block & Bleed Needle Valves please contact one of our service representatives at 01422 377 999 or by email at sales@colson.co.uk.
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