Wafer Type Check Valve

1. Design and manufacture stadnard: API594
2. Face to face: API594,API6D, DIN3202
3. Flange ends standard: ASME B16.5
4. Inspection and test standard: API598

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Description

Small in size, light in weight, compact in structure, easy in maintenance.
Two springs are used excerting on each of the pair valve plates, which close the plates quickly and automatically.
The quick-close action prevents the medium from flowing back and eliminates the water-hammer effect.

Standards compliance

•’Design and Manufacture: API 594, API 6D

• Face to face: API 594, API 6D, DIN 3202

• Flanged connection: 2″~24″ to ANSI B16.5 22″, 26″~36″ to MSS-SP-44 to API 605 on request

• Test and inspection: API 598

• Pressure- tempeature rating: ASME B 16.34 DIN 2401

Product introduction

• The wafer flange clamped butterfly check valve is a energy-save product. It is manufactured based the foreign advanced technology and in accordance with relative international standards. This product is featured by excellent retaining performance, high safety and reliability and low flow resistance. It is suitable for systems in the industries of petrochemical food processing, medicine, textile, paper-making. Water supply, drainage, metallurgy, energy. and light industry, etc, used as a check valve in one way.

Features

. 1 Small in size, light in weight, compact in structure, easy in maintenance.

•2. Two springs are used excerting on each of the pair valve plates. Which close the plates quickly and automatically.

3. The quick-close action prevents the medium from flowing back and eliminates water – hammer effect.

. 4. This valve is short in length, so that it is rigid and easy to mount.

.5. It is easy to install on pipeline which is laid horizontally or vertically.

• 6. This valve is tightly sealed without leakage under the pressure water test.

• 7. Safe and reliable in operation, high interference-resistance.

• 8. The connection dimensions of flanges accord with the standards of GB4216-84 GB4216.5-84

.9. The face to face dimensions are in accordance with ISO5752-82. The stem of the valve should be perpendicular to the horizontal level when the valve is mounted on horizontal pipeline. For vertical installation the direction of flow should be downward.

Wafer Type Check Valve FAQs

1. What is a wafer type check valve used for?

A wafer type check valve is a compact non‑return valve used to prevent backflow between two flanges in pipelines. It is commonly applied in water, HVAC, chemical, general industrial, and process systems where space‑saving and quick installation are important.

2. What are the main advantages of a wafer type check valve?

Its main advantages include slim profile, low weight, simple installation between flanges, and cost‑effective solution for low‑ to medium‑pressure services. It is especially suitable for space‑constrained piping and systems that do not require end‑of‑line or very high‑pressure service.

3. What are the main advantages of a wafer type check valve?

4. What wafer type check valve dimensions and standards are common?

Common face‑to‑face dimensions follow API 6D, ASME B16.10, and DIN 3202, with size ranges typically covering DN50–DN300 (2″–12″) depending on the design. Dual‑plate wafer check valves often follow API 594 class dimensions for Class 150–2500.

5. How should a wafer type check valve be installed?

A wafer type check valve is installed between two flanges, aligned with flow direction and secured by flange bolts. Orientation (e.g., horizontal or vertical) and upstream straight‑pipe length should match the valve manufacturer’s recommendation to ensure proper disc movement and sealing performance.

6. Is PANS a verified brand?

Yes, PANS is a “Famous Trademark” with over 35 years of history and global registrations.

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