Swing Check Valve
Swing Check Valve – YONCO Flanged Non-Return Valve The YONCO Swing Check Valve (H44H / H44Y Series) is a highly reliable automatic valve designed to prevent […]
Swing Check Valve – YONCO Flanged Non-Return Valve
The YONCO Swing Check Valve (H44H / H44Y Series) is a highly reliable automatic valve designed to prevent the reverse flow of fluids in piping systems. Suitable for a wide pressure range from PN16 to PN250 (1.6 MPa – 25 MPa) and extreme temperatures, this valve is essential for protecting critical equipment, such as pumps and compressor motors, from flow reversal and water hammer. It is widely used in petroleum, chemical, pharmaceutical, fertilizer, and power generation industries.
Core Features & Functions
- Automatic Operation: Operates entirely through the kinetic energy of the pipeline fluid. The disc swings open automatically under forward flow and closes immediately when the flow stops or reverses.
- Backflow Prevention: Provides a tight seal to ensure zero media backflow, safeguarding upstream equipment from damage and preventing the drainage of containers.
- Auxiliary System Support: Can be installed in auxiliary pipelines to supply make-up systems where the pressure might temporarily exceed the main system pressure.
- Unobstructed Flow Path: The swing disc design allows for a full, clear waterway when fully open, minimizing pressure drop and fluid resistance.
- Durable Sealing: The sealing surfaces can be hard-faced with Iron-based alloy or Stellite, offering exceptional resistance to wear, galling, and corrosion.
Performance Parameters
| Parameter | Details & Options |
|---|---|
| Model Series | H44H (Carbon Steel), H44W / H44Y (Stainless Steel) |
| Nominal Diameter (DN) | DN25 – DN400 (1″ – 16″) |
| Working Pressure | 1.6 MPa ~ 25 MPa (PN16 to PN250) |
| Applicable Temperature | -29°C ~ +550°C (Depending on body material) |
| Body & Bonnet Material | WCB (Carbon Steel), CF8/CF8M (Cr-Ni-Ti Stainless Steel) |
| Sealing Surface Material | Carbon Steel with Iron-base alloy overlay, Integral Stainless Steel Seat |
| Applicable Media | Water, Steam, Oil Products, Weakly Corrosive Acids |
Primary Applications
• Pump Station Discharge Lines
• Power Plant Steam Networks
• Petrochemical Processing
• Oil & Gas Pipelines
• Fertilizer & Pharmaceutical Plants
• Municipal Water Supply
Secure Your Pipelines with YONCO
Protecting your pumps and preventing fluid reversal is critical to operational safety. YONCO swing check valves are strictly tested for shell strength and seat leakage to guarantee 100% reliability in the field. Contact our engineers today for full dimensional drawings (L, D, D1, etc.) and customized material selection for your specific working conditions.
