Double Plate Flange Check Valve
Datasheet
Download datasheet (PDF)Specifications are indicative. Final specification is confirmed at quotation.
Specifications
Confirmed at quote- Size Range
- DN50 to DN1000
- Pressure Class
- PN10, PN16, PN25
- End connection
- Flanged
- Operating temperature
- max 150°CRange across the material options offered. The limit of a given build follows its grade, confirmed with your enquiry.
Standards
- Design & manufacture
- API 594
- Inspection & test
- API 598
- Face to face
- API 594
- Materials
- ASTM
Configure your variant(manually adjust box on the right if you require a different spec)
- Size
- Pressure
- End connection
Materials
All available material options per part. Click a pill to set it in the configurator.
- Body
- Disc
- Seat
- Stem
- Spring
- Body Bearing
- Body Seat
- Eye Bolt
- Hinge Pin
- Plate
- Plug
- Spring Bearing
- Stop Pin
Operating media
Typical applications
- Water supply
- Wastewater treatment
- Petrochemical
- Power generation
- HVAC
- Marine
- Chemical
- Industrial
Coatings
Approvals
Features
- Dual-plate spring-loaded design providing low cracking pressure
- Flange body design with relatively short face-to-face dimension
- Non-slam closing action minimises water hammer and vibration
- Supports horizontal and vertical (upward flow) installation
- Retainerless wafer style construction
- Each valve tested to API 598 prior to shipment
- Double-door (dual-plate) wafer check valve design
- Flanged body with bolt-hole pattern for PN10 and PN16 flange drilling
- Part 1: disc (lower half)
- Part 2: spring/hinge pin assembly
- Part 3: upper disc
- Part 4: hinge pin
- Part 5: body
- Part 6: seat/seal ring
- Part 7: body flange face (front view)
- Dimensions shown: L (face-to-face), D (flange OD), D1 (bolt circle diameter), D2 (bore/inner diameter), z-d (number of bolt holes and hole diameter)
Description
Dual-plate, flanged-end check valve for backflow prevention in industrial piping systems. The valve body is available in cast iron, ductile iron, carbon steel, or stainless steel, with EPDM, NBR, FKM, or Neoprene seat options. Double-disc spring-loaded design provides low cracking pressure and non-slam closing action to minimise water hammer. Supports horizontal and vertical (upward flow) installation.
Selection notes
This check valve is a double plate pattern, supplied for flanged installation.
Sizes run DN50 to DN1000, in PN10, PN16, PN25.
The body is offered in CI, DI, Carbon Steel and Stainless Steel, so the grade can be matched to the service rather than the other way round.
Seat and trim options are NBR, EPDM, FKM and Neoprene. The seat, not the body, usually sets the temperature and medium limit, so confirm it against the service before ordering.
Stated service media include fresh water, sewage, sea water, air, vapour and oils.
It is catalogued for Water & Wastewater, HVAC and Industrial Process.
Working temperature is max 150°C.
Built to API 594, API 598, ASTM and DIN PN10/16/25.
Supplier remarks
- Custom coatings, materials, and pressure ratings available to match specific project requirements.
- Sizes available from DN50 to DN600 or more.
- Operating mode options: manual, worm gear, pneumatic, electric, etc.
Available pressure classes
Pressure classes this product is rated to.
Used in
Related guides
Smart find
Searches our product catalogue using your spec. Drop a spec sheet or parts list (PDF, Excel, CSV, Word or text, several at once), paste a description or a part number and we'll find the closest matches for each. Anything we can't match goes to your RFQ as a custom enquiry for our team to source.Related Check Valves
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