The YH76 Wafer Butterfly Check Valve, also known as a Dual Plate Check Valve, is a high-performance, lightweight automatic valve. It consists of a body, two semi-circular plates, a hinge pin, and springs. Due to the short stroke of the plates during closing and the assistance of the springs, this valve can close rapidly, significantly reducing water hammer and noise. Its wafer structure makes it compact and lightweight, providing an ideal solution for protecting pumps and equipment from backflow in water treatment, municipal supply, and petrochemical pipelines.

Product Image:YH76 Wafer Butterfly Check Valve

1、Rapid Response Dual-Plate: The two semi-circular plates are lightweight with a short travel distance, enabling instant closure assisted by springs when flow reverses.

2、Significant Water Hammer Reduction: The fast-closing characteristic effectively prevents massive fluid backflow, thereby drastically reducing water hammer pressure and vibration.

3、Minimal Installation Space: The face-to-face dimension is extremely short, approximately 1/4 that of a traditional swing check valve, saving space and material costs.

4、Low Pressure Drop: The wide opening angle of the plates and smooth internal flow path ensure high flow capacity and minimum pressure loss.

5、Flexible Installation: Thanks to the spring-loaded design, the valve can be installed horizontally or in vertical pipelines with an upward flow direction.

6、Reliable Sealing: Sealing surfaces are available in rubber (e.g., EPDM/NBR) or hard-faced metal to meet various service requirements from water to corrosive media.

Structure Diagram:YH76 Wafer Butterfly Check Valve

Material List

Performance Specification Sheet

Standard requirements for external dimensions

Product approved by PED97/23/EC (CE0036)

Casting approved by AD2000-W0

Inspection & Testing: API598, EN12266

Outline Diagram:YH76 Wafer Butterfly Check Valve

Outline Dimension Table   （Unit:mm）