Flanged Swing Check Valve
Flanged Swing Check Valve – YONCO PN16 to PN250 The YONCO Flanged Swing Check Valve (H44H / H44Y / H44W) is an automatic, heavy-duty unidirectional flow […]
Flanged Swing Check Valve – YONCO PN16 to PN250
The YONCO Flanged Swing Check Valve (H44H / H44Y / H44W) is an automatic, heavy-duty unidirectional flow control valve engineered to protect critical industrial pipeline systems. Operating efficiently across a wide pressure range from PN16 to PN250 (1.6 MPa to 25.0 MPa) and withstanding extreme working temperatures from -29°C to +550°C, this valve is essential for preventing media backflow. It offers reliable, automatic protection for pumps, driving motors, and upstream equipment in the petroleum, chemical, power generation, and pharmaceutical sectors, effortlessly handling water, steam, oil products, and corrosive acidic media.
Core Features & Advantages
- Automatic Backflow Prevention: Engineered to automatically open and close driven entirely by the media’s own flow velocity, providing immediate and reliable shut-off to prevent reverse flow damage.
- Heavy-Duty Flanged Construction: Features a robust flanged body design that ensures highly secure, leak-free pipeline connections and allows for straightforward in-line inspection and maintenance.
- Durable Seating Surfaces: Sealing surfaces are available as integral body seals or hard-faced with premium iron-based alloys/stellite, offering exceptional resistance to wear, galling, and high-velocity fluid erosion.
- Optimized Flow Dynamics: The unobstructed swing disc design provides a clear, full-port flow path, ensuring maximum fluid capacity and minimal pressure drop across the valve.
- Versatile Material Configuration: Fully customizable with high-strength carbon steel for high-temperature steam/oil (up to 425°C), or premium Cr-Ni-Ti stainless steel for superior resistance against weakly corrosive and acidic media (up to 550°C).
Standards & Technical Specifications
| Category | Applicable Standard & Details |
|---|---|
| Product Models | H44H, H44Y, H44W |
| Nominal Pressure (PN) | 1.6 MPa – 25.0 MPa (PN16 – PN250) |
| Size Range | DN25 – DN400 |
| Working Temperature | -29°C to +550°C |
| Valve Structure | Swing Type, Flanged Ends |
| Body & Disc Materials | Carbon Steel, Cr-Ni-Ti Stainless Steel |
| Sealing Surfaces | Carbon Steel + Alloy Hard-Facing / Integral Body Seal |
| Applicable Mediums | Water, Steam, Oil Products, Acidic & Weakly Corrosive Media |
Primary Applications
• Petroleum & Oil Refining
• Chemical Processing Plants
• Thermal Power Generation
• Pharmaceutical Manufacturing
• Fertilizer Production Facilities
• Industrial Steam & Water Networks
High-Performance Check Valves by YONCO
When protecting critical pumps and preventing reverse flow is non-negotiable, rely on YONCO. Our flanged swing check valves undergo rigorous testing to ensure immediate bubble-tight isolation and long-lasting structural integrity under extreme pressures up to PN250. We provide complete customization on body materials—from rugged carbon steel to specialized stainless alloys—to perfectly match your specific media and temperature requirements. Contact our sales engineers today to specify the exact trim and rating for your critical pipeline.
