Wafer Check Valve Carbon Steel Type W409 DIN PN 25
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 25 is a high-performance industrial valve designed for unidirectional flow control in piping systems. Manufactured from durable carbon steel, this valve ensures reliability and longevity in demanding applications, including water supply, chemical processing, oil and gas, and HVAC systems. It complies with DIN standards and has a pressure rating of PN 25, making it suitable for medium to high-pressure environments where backflow prevention is critical.This valve features a wafer-type design, which allows for compact installation between flanges without the need for additional gaskets or bolts, reducing overall weight and space requirements. The check mechanism operates automatically, opening with forward flow and closing swiftly to prevent reverse flow, thereby protecting equipment from damage and maintaining system efficiency. Its robust construction ensures minimal maintenance and resistance to corrosion, wear, and high temperatures.Key specifications and benefits include:Material: Carbon steel for enhanced strength and durabilityStandard: DIN-compliant for international compatibility and safetyPressure Rating: PN 25, ideal for pressures up to 25 barType: Wafer check valve, enabling easy integration into existing systemsApplications: Suitable for liquids, gases, and steam in various industriesOptimize your industrial operations with this efficient and cost-effective valve, engineered to deliver superior performance and reduce downtime. Its SEO-optimized description highlights key features for easy discovery in search engines, targeting professionals seeking reliable flow control solutions.

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 | 25 | 25 | 14 | 22 | 94 | 0,9 |
| 50 | 25 | 25 | 14 | 32 | 109 | 1,2 |
| 65 | 25 | 25 | 14 | 40 | 129 | 1,5 |
| 80 | 25 | 25 | 14 | 54 | 144 | 2,5 |
| 100 | 25 | 25 | 18 | 70 | 170 | 3,5 |
| 125 | 25 | 25 | 18 | 92 | 196 | 5 |
| 150 | 25 | 25 | 20 | 112 | 226 | 5,5 |
| 200 | 25 | 25 | 22 | 154 | 286 | 8 |
| 250 | 25 | 25 | 26 | 200 | 343 | 15 |
| 300 | 25 | 25 | 32 | 240 | 403 | 24 |
| 350 | 25 | 25 | 38 | 270 | 460 | 39 |
| 400 | 25 | 25 | 44 | 310 | 520 | 59 |
| 450 | 25 | 25 | 50 | 360 | 567 | 70 |
| 500 | 25 | 25 | 56 | 405 | 622 | 90 |








