What is a check valve and what does it do?

A check valve allows flow in one direction only, automatically preventing backflow. When flow stops or reverses, the disc closes against the seat to prevent return flow. They are passive devices with no manual operation required.

What types of check valves do you manufacture?

Swing check valves (API 594), Lift check valves (spring-loaded or weight-loaded), Piston check valves, Double disc check valves, Non-slam check valves (for preventing water hammer), and Wafer check valves. Full API 594, API 600, and ASME B16.34 compliance.

What is the difference between swing check and lift check?

Swing check: disc swings on a hinge away from the seat when flow is forward, and closes by gravity when flow stops. Suitable for low-velocity applications. Lift check: disc lifts vertically like a globe valve disc, allowing flow above it when pressure pushes it up. Better for higher velocities and where water hammer is a concern.

What is API 594 check valve?

API 594 covers wafer-style check valves (swing check and lift check) for petroleum, chemical, and other process industries. These are lightweight wafer-style designs that fit between flanges. They are tested to API 598 and meet face-to-face dimensions of API 6D.

Direct answer · Updated July 2026

Who manufactures check valves in India?

Supreme Valves India supplies API 594 swing check, dual plate wafer, and lift check valves in WCB, CF8M, and NAB for steam, water, and seawater service. Flanged and wafer ends, Class 150–600, API 598 tested from Ahmedabad.

Get valve quote India · +91 97732 78770 · Indicative price list

API 594 / API 600 / ASME B16.34

Check Valve Manufacturer
& Exporter from India

Supreme Valves is a leading check valve manufacturer in India. API 594 wafer check, API 600 swing check, lift check, and non-slam designs. Available in WCB, SS316, and NAB C95800. Sizes 1/2" to 24", Class 150 to 2500#.

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API 594/600 Certified 1/2" to 24" Gulf Export

Check Valve Types We Manufacture

Swing Check Valve

Hinged disc swings open with forward flow, closes by gravity when flow reverses. Simple, reliable design.

API 594 / API 600

Lift Check Valve

Disc lifts vertically with flow. Spring-loaded for faster closure. Better for vertical piping.

Piston / Spring-Loaded

Wafer Check Valve

Compact wafer design fits between flanges. Lightweight, lower cost. Swing or spring-loaded.

API 594

Non-Slam Check Valve

Spring-assisted closure minimizes water hammer. For pumping stations and pipelines.

Silent Closure

Double Disc Check Valve

Two discs hinged from center. Compact wafer design. Good for horizontal and vertical flow.

API 594

NAB Seawater Check Valve ⭐

Nickel Aluminium Bronze C95800 for seawater cooling, desalination intake, and marine service.

C95800 NAB

Check Valve Specifications

📏

1/2" – 24"

Size Range

⚡

150# – 2500#

Pressure Classes

🔧

WCB / SS316 / NAB

Body Materials

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