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Valves by Check Valve Design

API 594 Dual Plate Check Valves

Use this collection when the project calls for API 594 dual plate check valve construction. The current product family covers compact wafer dual plate valves with wafer, lug and double-flanged end arrangements.

API 594 / ASME B16.342–48 inClass 150–900Wafer / Lug / Double Flanged

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API 594 Dual Plate Check Valves product collection

Product Collections

API 594 Dual Plate Product Family

Open the wafer dual plate check valve family to compare class, material and installation configuration.

WAFER DUAL PLATE CHECK VALVES

Dual Plate / Wafer Pattern

Wafer Dual Plate Check Valves

Compact spring-assisted non-return design for pump discharge, process and utility piping.

2–48 in · Class 150–900

View product range →

Buyer Selection Matrix

Dual Plate Check Valve RFQ Points

Installation pattern	State wafer, lug or double-flanged arrangement and the mating flange standard.
Pressure class	The current wafer dual plate family is shown in Class 150, 300, 600 and 900.
Body material	Existing options include WCB, CF8M, Duplex 2205 and Super Duplex 2507.
Flow conditions	Provide normal/minimum/maximum flow data where dynamic behavior, pressure drop or closing response needs review.
Service orientation	Confirm line orientation, installation position and any project requirements for spring, hinge, disc or seat materials.

Selection Logic

Compact Check Valve Selection Needs Line Data

For dual plate check valves, line size and class are only the starting point. Pump or compressor discharge conditions, flow velocity, orientation, available installation length and acceptable pressure drop can affect the final configuration. Provide operating data when the project requires a dynamic check.

Valve type and line function

Size and pressure class

Body and trim material

End connection / facing

Service pressure and temperature

Testing, inspection and documents

Project Application

When This Design Is Useful

Dual plate check valves are selected where a compact non-return valve is preferred between piping flanges or in other compact end arrangements. Final selection should follow the project specification, required face-to-face arrangement, fluid conditions and pressure-test requirements.

For final selection, use the project valve specification, piping material class, approved datasheet and service conditions as the controlling documents.

Factory & Quality Evidence

Review Supplier Evidence Before PO

Buyers can review YINKE VALVE factory information, quality certificates, sample inspection records and project references before technical and commercial confirmation.

Factory & Production Quality & Certificates Project References Send RFQ

Buyer Questions

API 594 Dual Plate Check Valves FAQ

Is API 594 the same as the wafer dual plate product page?

This page is the API 594 dual plate collection hub. The wafer dual plate page contains the detailed product range and class links.

Which end arrangements are shown on the product page?

Wafer, lug and double-flanged arrangements are listed in the current product range.

What operating information helps with check valve selection?

Provide fluid, pressure, temperature, normal/minimum/maximum flow, line size, orientation and any pump/compressor data required by the project review.

RFQ Checklist

Information to Send for Review

Valve type / design standard

Nominal size and pressure class

Body, trim and seat materials

End connection and facing

Operation / actuator if required

Fluid, pressure and temperature

Quantity and delivery requirement

ITP, testing and document scope

Technical data is confirmed against the final quotation, approved drawings and project specification.

Need a Project Valve Quotation?

Send the valve list, datasheet or piping specification for technical and commercial review.

Send RFQ