The national standards for clamp butterfly valves include the following aspects:
OneDesign Criteria:
The design standards of clip-on butterfly valves mainly include GB T 12238-2008 "Water Utilization Metal Sealed Centerline Butterfly Valve", GB T 12239-2005 "Centerline Butterfly Valve for General Industrial Use" and other standards. These standards cover the design requirements of the clamp butterfly valve such as structure, working pressure, sealing performance, etc.
IIManufacturing Standards:
The manufacturing standards of clamp butterfly valves mainly include GB T 12240-2005 "Centerline Butterfly Valves for General Industrial Use" and other standards. These standards stipulate the manufacturing process and manufacturing quality requirements of clamp-on butterfly valves.
IIIMaterial Standards:
The material standards of clamp butterfly valves mainly include GB T 12241-2005 "Materials for Metal Sealed Centerline Butterfly Valves" and GB T 12242-2005 "Materials for Centerline Butterfly Valves for General Industry" and other standards. These standards specify the material requirements for clamp-on butterfly valves, including material types, chemical composition, mechanical properties, etc.
FourthConnection Standards:
The connection standards of clip-on butterfly valves mainly include GB T 9113-2000 "Steel Pipe Flange", GB T 9115-2000 "Steel Pipe Flange Connection" and other standards. These standards specify the connection method of the clamp butterfly valve, including flange connection, clamp connection, etc.
FiveTest Criteria:
The test standards of clamp butterfly valves mainly include GB T 13927-2008 "General Butterfly Valve", GB T 13932-2008 "Metal Seal Centerline Butterfly Valve" and other standards. These standards stipulate the test content and requirements of clamp butterfly valves, including visual inspection, leakage test, strength test, etc.
Detersen butterfly valve