Wafer Check Valve Carbon Steel Type W409 DIN PN 10
TECHNICAL DESCRIPTION
Carbon steel wafer check valve for installation between connecting flanges, soft sealing PN10.
WORKING FLUID / MEDIUM
• Corrosive fluids, steam, thermal oil, fuel, lubricating oil and flammable hydraulic oils.
• Oil, air, gas, non-flammable hydraulic fluids, boiler feed water, condensate.
• Sea water.
EXECUTION
• NBR O-ring (-40°C to +90°C)
• EPDM O-ring (-40°C to +120°C)
• Teflon – PTFE O-ring (-50°C to +220°C)
• FPM/FKM O-ring (-30°C to +180°C).
OPTIONS
Larger sizes upon request.
The WAFER CHECK VALVE CARBON STEEL TYPE W409 DIN PN 10 is engineered for industrial applications requiring reliable backflow prevention in pipeline systems. Constructed from high-grade carbon steel, this valve ensures durability and resistance to high-pressure environments, adhering to DIN standards and a pressure rating of PN 10. Its wafer-style design allows for easy installation between flanges, minimizing space requirements and reducing maintenance costs, making it an ideal choice for water, oil, gas, and chemical processing industries.Key features include:Robust carbon steel body for enhanced strength and corrosion resistanceCompliance with DIN standards for guaranteed performance and safetyPN 10 pressure rating, suitable for operations up to 10 barCompact wafer design that saves space and simplifies integrationSwift response to flow changes, preventing reverse flow efficientlyThis valve is designed to operate automatically, closing upon flow reversal to protect equipment and maintain system integrity. It is widely used in sectors such as petrochemical, power generation, and HVAC systems, where preventing backflow is critical for safety and efficiency. Regular inspection and maintenance are recommended to ensure long-term reliability and optimal performance in demanding industrial settings.

Materials
| 1 | Body | steel 1.0619; DIN GS-C25 |
| 2 | Valve | steel 1.0619; DIN GS-C25 |
| 3 | Bolt | stainless steel 1.4301 |
| 4 | Schegel | steel 1.0619; DIN GS-C25 |
| 5 | O-ring | rubber, PTFE |
Features
| SPECIFICATION | |
|---|---|
| Standard | DIN, ANSI, JIS |
| Connection | between flanges / Wafer |
| Operation | automatically |
| Closing | self-closing |
| T max. °C | 220 °C |
| DN | PN | Фланци/PN | L | d1 | D | Тегло (kg) |
|---|---|---|---|---|---|---|
| 40 | 10 | 10 | 14 | 22 | 94 | 0,9 |
| 50 | 10 | 10 | 14 | 32 | 109 | 1,2 |
| 65 | 10 | 10 | 14 | 40 | 129 | 1,5 |
| 80 | 10 | 10 | 14 | 54 | 144 | 2,5 |
| 100 | 10 | 10 | 18 | 70 | 164 | 3,3 |
| 125 | 10 | 10 | 18 | 92 | 194 | 4 |
| 150 | 10 | 10 | 20 | 112 | 220 | 4,7 |
| 200 | 10 | 10 | 22 | 154 | 275 | 7,8 |
| 250 | 10 | 10 | 26 | 200 | 330 | 13 |
| 300 | 10 | 10 | 32 | 240 | 380 | 19 |
| 350 | 10 | 10 | 38 | 270 | 440 | 35 |
| 400 | 10 | 10 | 44 | 310 | 490 | 52 |
| 450 | 10 | 10 | 50 | 360 | 540 | 64 |
| 500 | 10 | 10 | 56 | 405 | 595 | 75 |










