Flanged Check Valve
Size: DN50-DN600 (2''-24'')
Standards: EN12334 / BS5153 / AWWA C508 / DIN3352 / ISO 5752
Connection: Flanged (EN1092-2 / ANSI B16.1 / DIN PN10/16)
Work Pressure: PN10 / PN16 / 1.0MPa / 1.6MPa
Product Overview
Flanged Check Valve for Water Supply & Industrial Pipeline Systems
KOXY flanged check valve is designed to prevent backflow and ensure stable one-way flow in water supply, wastewater, drainage, and industrial pipeline systems.
The flexible rubber flap structure allows smooth operation with low pressure loss, reducing water hammer and ensuring reliable non-return performance in pipeline networks.
Compared with traditional swing check valves, flanged check valves provide quieter operation, better sealing performance, and improved system stability.
This valve is widely used in municipal water systems, sewage treatment plants, pumping stations, HVAC systems, and industrial fluid pipelines.
Advantages of KOXY Flanged Check Valve
Stable non-return performance
Low noise and reduced water hammer
Corrosion resistant ductile iron body
Easy installation with flanged connection
Suitable for water and industrial systems
OEM / ODM customization available
Long service life with low maintenance cost
Product Features
Reliable Non-Return Function
Flanged check valve design ensures effective backflow prevention and stable one-way flow control in pipeline systems.
Low Noise Operation
Rubber flap structure reduces closing impact and minimizes water hammer effects in pipeline operation.
Corrosion Resistant Construction
Ductile iron body with protective epoxy coating ensures long-term durability in water and wastewater environments.
Low Pressure Loss Design
Optimized internal flow path reduces resistance and improves overall pipeline efficiency.
Why Choose Flanged Check Valve?
Flanged check valves are widely used in modern pipeline systems because they provide stable and efficient backflow prevention performance.
| Key Factor | Flanged Check Valve | Traditional Swing Check Valve |
|---|---|---|
| Backflow Prevention | Reliable one-way flow control | Moderate, depends on pressure |
| Sealing Performance | Excellent sealing with rubber flap | Metal-to-metal sealing, wear may occur |
| Noise Level | Low noise operation | Higher noise during closing |
| Water Hammer Effect | Reduced significantly | More likely to occur |
| Pressure Loss | Low flow resistance design | Higher flow resistance |
| Maintenance Requirement | Low maintenance | Medium maintenance required |
| Service Life | Long service life in water systems | Medium service life |
| Application Suitability | Water supply, wastewater, industrial pipelines | General water pipelines only |
They are especially suitable for water supply and wastewater systems requiring reliable non-return protection.
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KOXY provides:
Full size range
OEM customization
Fast delivery support
Factory direct pricing
Global project supply
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Technical Specifications
Product Technical Parameters
| Nominal pressure(mpa) | 1.0 | 1.6 | 2.5 | |
| Shell test pressure(mpa) | 1.5 | 2.4 | 4.0 | |
| Sealing test pressure(mpa) | 1.1 | 1.76 | 2.75 | |
| Applicable temperature ℃ | 0-80 | |||
| Applicable medium | Water | |||
Product Dimensions
| Nominal diameter(dn) | L | H |
| 40 | 207 | 180 |
| 50 | 207 | 180 |
| 65 | 210 | 190 |
| 80 | 225 | 200 |
| 100 | 252 | 220 |
| 125 | 295 | 260 |
| 150 | 332 | 290 |
| 150 | 403 | 370 |
| 200 | 450 | 430 |
| 300 | 490 | 475 |
| 350 | 740 | 550 |
| 400 | 870 | 600 |
Product Parts Materials
| Valve body,valve cap | Ductile iron | |||
| Valve petals | Rubber composition | |||
Q: What is a flanged check valve?
A flanged check valve is a non-return valve installed with flanged connections, designed to prevent backflow in pipeline systems.
Q: What is the function of a check valve?
A: A check valve allows fluid to flow in only one direction and automatically prevents reverse flow in pipelines.
Q: Where are flanged check valves used?
A: They are widely used in water supply, wastewater treatment, pumping stations, HVAC systems, and industrial pipelines.
Q: What is the difference between check valve types?
A: Different check valves (swing, lift, rubber flap) vary in sealing performance, noise level, and application suitability.
