Purpose and features
Swing check valves
Forward flow lifts the hinged disc. Reverse flow closes it under its own weight and the action of the medium. For larger sizes, the source catalogue describes bypass, hydraulic damping and multi-disc versions.
Catalogue · Ufa Neftemash
Swing check valves
Swing check valves automatically prevent reverse flow in a pipeline, for example when a pump stops.
Reference parameters
DN in source table15–500 mm
PN in source table16, 25, 40, 63, 100, 160, 250 kgf/cm²
MediaLiquids and gases, according to the source catalogue
Standards cited in sourceGOST 13252-91; API 6D upon customer request
Technical values have been checked against the supplied Ufa Neftemash catalogue. They remain reference information rather than a confirmed current specification. Confirm every DN/PN combination, material, connection, applicable standard and available version against current manufacturer documentation before ordering.
Designations and versions
The source uses КОП for a swing check valve and provides a DN/PN matrix. Its note states that DN 15–40 and DN 250–500 were under development when the catalogue was compiled. Current manufacturing availability must be confirmed with the manufacturer.
Information needed for an enquiry
Specify DN, PN, the КОП designation if known, body material, medium, temperature, end connection and face-to-face dimension. The source lists flanged, weld-end, threaded socket and “vanuz-type” connection (the manufacturer’s catalogue term; confirm the design from the drawing)s.
Product passports, technical documentation and price lists are available on request.