High Pressure Swing Check Valve
Product Overview
The High Pressure Swing Check Valve is specifically engineered to handle the elevated working pressures (up to 25 bar / 300 PSI) typically encountered in high-rise building fire protection networks and deep-well water supply systems.
It functions automatically to prevent reverse flow, safeguarding high-pressure fire pumps, flow meters, and upstream infrastructure from dangerous backpressure and hydraulic shock (water hammer).
Product Parameter
| Parameter | Specification Details |
| Product Name | High Pressure Swing Check Valve |
| Main Material | Ductile Iron |
| Body Type | Grooved |
| Size Range | DN50(2") to DN300(12") |
| Working Pressure | 10bar/16bar/25bar |
| Working Temperature | 0℃ to 80℃(32℉ to 176℉) |
| Media | Water |
| Surface Finishing | Epoxy Coating |
| Purpose | Used in one-way flow pipeline to prevent the water from back flow |
| Application | High-rise buildings fire fighting system, near fire pump |
Product Material
| Part | Material |
| Body | Ductile Iron |
| Disc | Ductile Iron,Covered By EPDM |
| Stopper | EPDM |
| Clapper Arm | Ductile Iron |
| Hinge Pin | Stainless steel 304 |
| O-Ring | EPDM |
| Plug | Stainless steel 304 |
Dimensions & Weights
| Size (DN) | Size (Inch) | L (Face-to-Face mm) | H (Height mm) | Weight (kg) |
| DN50 | 2" | 168 | 120 | 6.5 |
| DN65 | 2.5" | 184 | 135 | 8.0 |
| DN80 | 3" | 197 | 145 | 11.5 |
| DN100 | 4" | 210 | 175 | 16.0 |
| DN150 | 6" | 267 | 220 | 31.0 |
| DN200 | 8" | 318 | 270 | 54.0 |
| DN250 | 10" | 381 | 320 | 88.0 |
| DN300 | 12" | 445 | 370 | 125.0 |
Core Engineering Advantages
The EPDM-encapsulated disc ensures a 100% bubble-tight seal even at low backpressure, preventing water hammer and reverse flow in high-rise fire systems.
The streamlined internal cavity minimizes turbulence, ensuring maximum water flow and optimal pressure retention for fire pumps.
Internal and external epoxy coating (minimum 250 μm) provides superior corrosion resistance, preventing rust-induced jamming during long-term standby.
The grooved body design complies with standard piping specifications, significantly cutting down installation time and labor costs compared to flanged connections.
Standards & Compliance
Design Standard
Generally conforms to AWWA C508 / MSS SP-71
Testing & Inspection
100% pressure tested according to ISO 5208 / EN 12266-1 (Zero leakage criteria)
Grooved Dimensions
Strictly comply with AWWA C606 / ISO 6182
Health & Safety
Materials conform to international health requirements for water supply and fire safety systems.
Why Choose Keylion Valves
Pressure Tested
Every single valve undergoes strict hydrostatic shell and seat testing up to 1.5x its rated working pressure before leaving our factory.
OEM Customization
We support custom epoxy coating colors (e.g., RAL 3000 Fire Red for fire protection, Navy Blue for water supply) and custom logo casting/tagging.
Traceable Quality
Raw material certificates and pressure test logs are archived and available for every batch.
FAQ
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