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DIN Cast Iron Swing Check Valve H44H-16
Technical Requirement:
1. Test: GB/T13927-1992;
Description
The H44H-16 Flanged Swing Check Valve is a reliable, automatic non-return valve designed to allow fluid flow in one direction while preventing damaging backflow. Utilizing a gravity-assisted swing disc mechanism, it offers dependable protection for pumps and pipelines in horizontal and vertical (upward flow) installations, meeting rigorous industrial testing standards for safety and performance.
Technical Specifications:
- Nominal Diameter (DN): DN50 – DN200
- Nominal Pressure (PN): 1.6 MPa (PN16)
- Test Pressure (Strength/Water): 2.4 MPa
- Test Pressure (Seal/Water): 1.8 MPa
- Suitable Temperature: ≤ 200°C
- Applicable Medium: Water, Steam, Oil
Main Parts and Materials:
| Parts Name | Materials |
| Body, Bonnet | GG25 |
| Disc | GG25 |
| Bonnet | GG25 |
| Seat Ring | 304 |
Key Product Features:
- Automatic Backflow Prevention: The swing disc mechanism opens with forward flow and closes automatically under gravity and back pressure to protect downstream equipment.
- Robust Cast Iron Construction: Features a heavy-duty GG25 cast iron body and bonnet for maximum structural integrity and long service life.
- Corrosion-Resistant Trim: Equipped with a 304 stainless steel seat ring to ensure long-lasting, leak-tight sealing performance against wear and corrosion.
- Low Pressure Drop: The full-port swing design allows the disc to clear the flow path completely when open, minimizing turbulence and energy loss.
- Rigorous Testing: Manufactured and tested to strict GB/T 13927-1992 standards (including 2.4 MPa strength and 1.8 MPa seal tests) for guaranteed safety and reliability.
Applications:
Ideal for Municipal Water Distribution, Steam Distribution Networks, Oil Pipelines, and General Industrial Fluid Systems. Specifically suited for installations where preventing reverse flow is critical to system safety and equipment longevity.
Additional information
| Standard | DIN |
|---|
