API 594
Dual-plate check valve
Request a KEHUA dual plate check valve quotation. Confirm plate, hinge and spring design, actual body connection, pipe clearance and closing-response review.
Check Valves
Dual-plate check valve
KEHUA lists a dual plate check valve series with two pivoting closure plates. Review the hinge, spring and seat arrangement of the offered model. Dual plate describes the closing mechanism; it does not, by itself, specify a wafer connection or prove non-slam performance.
About the dual-plate check valve manufacturerThese are family-level options. Confirm the offered series rating and materials against its approved datasheet.
DUAL PLATE CHECK VALVE PROCUREMENT
Is a dual plate check valve the same as a wafer check valve?
No. Dual plate identifies the internal closure mechanism; wafer identifies a body installed between mating flanges. A quotation must confirm both. When the proposed model is a wafer design, check the open-plate envelope against the actual pipe bore and nearby fittings before accepting the installation drawing.
- Confirm mating flange standard and facing, face-to-face length, gasket position, bolt arrangement and available space for plate travel. Identify any reducer or elbow close to the valve.
- Request plate, hinge-pin, spring and seat materials with their service limits; establish the permitted installation and pin orientation from the model instructions.
- Provide minimum and normal flow, reverse-flow conditions and the pump-trip sequence. Request pressure-loss and closing-response evidence for the selected configuration; spring assistance is not a universal no-slam guarantee.
- Agree shell and seat test conditions, leakage acceptance and required traceability records. Confirm whether internal maintenance requires removing the valve from the line.
SERIES SELECTION
What should you specify separately in a dual-plate check valve RFQ?
Specify the closing mechanism and installation arrangement separately: dual plate identifies the closing mechanism, while wafer describes an installation arrangement. Confirm plate, hinge and spring details, mating dimensions and internal clearance on the offered drawing. Provide reversal or pump-trip conditions for closing-response review; neither term alone proves non-slam performance.
Related procurement checks: wafer check valve page; check valve selection guide; Identify the actual connection requirements.
Compare construction choices in this valve family- Request plate, hinge and spring details for the offered model.
- Check connection dimensions and internal clearance against the mating pipe.
- Provide flow reversal or pump-trip conditions for closing-response review; do not assume no-slam performance.
- Provide flow range, fluid properties, pressure, temperature, installation orientation and available pump-trip/reversal information. Include flange or other quoted connection details, pipe bore, opening clearance, quantity, destination and requested date. Ask for plate/hinge/spring and material details, agreed seat tests and any limitations of the closing-response assessment.
Product-family buyer guides
Use these guides to compare valve families, review materials and prepare an RFQ. Confirm the offered model's ratings and service suitability against its approved datasheet.
- Swing vs Lift vs Dual Plate Check Valves: Selection Guide
Compare swing, lift and dual plate check valves by disc movement, installation, pressure drop and pump duty. Use the RFQ checklist to review the offered model.
- Valve End Connections: Flanged vs Butt Weld, Socket Weld & Threaded
Compare flanged, butt-weld, socket-weld and threaded valve connections. Check pipe interfaces, maintenance access and project standards with a practical RFQ checklist.
- Industrial valve materials: WCB, LCB, CF8M and duplex steel
Compare WCB, LCB, CF8M and duplex valve bodies with a material selection table and RFQ checklist covering fluid, temperature, corrosion and material records.
- Valve Pressure Testing: Shell vs Seat Tests & Buyer Checklist
Understand shell and seat leakage tests, review API 598 or ISO 5208 requirements, and specify an auditable valve pressure-test report before ordering.
- How to prepare an industrial valve RFQ that can be reviewed quickly
Prepare an industrial valve RFQ with a copyable fill-in checklist, quotation deviation table and checks for service data, materials, connections, actuation and documents.
- What to check in a valve qualification package
A document-review checklist for procurement teams comparing certificates, product evidence and project records.
Request a Quote
Request a dual-plate check valve quotation
Pipeline protection, pumps and process systems
Check Valves
