·The product conforms to the standard of GB/T12238-2008 “flange and clamp connection elastic sealing butterfly valve”.
·The test conforms to GB/T13927-2008 “industrial valve pressure test” standard.
·Side flange connection with GB/T17241.6-2008 “integral cast iron flange” standard. At the same time comply with BS4504, ISO7005, DIN2501 in PN1.0MPa, PN1.6MPa flange connection standard.
13 series with GB/T12221-2005 “metal valve structure length” in the flange connection butterfly valve 13 series size requirements.
14 series with GB/T12221-2005 “metal valve structure length” in the flange connection butterfly valve 14 series size requirements.
Features and advantages
·Compared with the ordinary butterfly valve, DB type butterfly valve without internal mechanical (fasteners) connection, no mechanical connection failure possible, high reliability, better able to adapt to harsh conditions.
·Filling epoxy resin technology to make the valve plate and the valve seat on the entire contact surface has the same amount of interference, eliminating machining and assembly errors, the pressure is uniform, reduce operating torque, reduce the wear of the sealing surface.
·Through the external injection port on the valve sealing surface in the use of the normal wear or due to minor damage caused by pipeline magazine to adjust, without the need to remove the pipeline, to achieve online repair with pressure.
·And the valve plate adopts the truss structure design, the relative before the traditional shape of the valve plate can reduce weight, but also improves the strength, while maintaining a large free flow area, increase the flow coefficient, reduce head loss, reduce the valve erosion.