H74 Single Disc Check Valve

The DIYE VALVE H74 Single Disc Check Valve features an ultra-thin, compact wafer-type structure, with lightweight design and efficient operation as its core advantages. This valve requires no additional flanges and can be directly clamped between two flanges for connection, significantly saving installation space and reducing material costs. Its smooth internal flow channel design minimizes flow resistance, ensuring efficient media transmission and reducing energy consumption.

The H74 Single Disc Check Valve features a single-disc swing valve design. The valve automatically opens based on the forward thrust of the medium. When the pump stops or backflow occurs, it closes quickly with the weight of the valve disc and the assistance of an internal spring. This design ensures sensitive opening and closing, minimizes water hammer impact, and reliably prevents backflow, protecting the pump and downstream equipment.

Sealing System and Application Adaptability

DIYE VALVE offers two high-performance sealing methods for the H74 model to meet different operating conditions:

1. Soft Seal (EPDM/NBR)

Achieves zero leakage performance, suitable for ambient temperature clean water systems, HVAC applications, and general non-corrosive fluid pipelines.

2. Metal Hard Seal (304/316 Stainless Steel)

Possesses excellent high-temperature and high-pressure resistance, ideal for steam systems and high-temperature media transmission scenarios.

The H74 Single Disc Check Valve is manufactured using high-quality materials such as 304 and 316L stainless steel, making it suitable for various media including water, oil, weak acid and alkali solutions, and seawater. It boasts excellent corrosion resistance and durability.

Quality Assurance and Customization Capabilities

Every DIYE VALVE H74 Single Disc Check Valve is manufactured with precision according to strict national and industry standards. We implement rigorous quality control throughout the entire production process to ensure high valve disc fit accuracy and smooth rotation of the connecting pins. Each product undergoes comprehensive factory pressure testing before leaving the factory, guaranteeing stable performance and long-term reliability.

We maintain regular inventory of standard specifications and also provide professional non-standard customization services to meet individual customer needs. With stable product quality and flexible supply capabilities, DIYE VALVE has gained global customer recognition, successfully promoting the superior quality of Chinese manufacturing to the international valve market.

Technical Drawings

Industry Applications

The H74 Single Disc Check Valve is widely used in multiple industry sectors:

1. Water Supply and Drainage Systems

2. Fire Protection Piping

3. Power Facilities

4. Chemical Processing Industry

5. Industrial Water Treatment Equipment

6. Heating, Ventilation and Air Conditioning (HVAC) Systems

7. Petrochemical Engineering

8. Marine Engineering

With its superior performance, compact design, and reliable quality, the DIYE VALVE H74 series has become the preferred fluid control solution for modern piping systems worldwide.