Wafer Check Valve Carbon Steel Type W409 DIN PN 16
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 16 is engineered for high-performance fluid control in demanding industrial applications. Constructed from durable carbon steel, this valve ensures superior resistance to pressure and corrosion, making it ideal for use in water supply, chemical processing, oil and gas, and HVAC systems. Its wafer-style design allows for compact installation between flanges, saving space and reducing overall system weight without compromising on reliability or efficiency.This check valve operates on the principle of preventing backflow, automatically closing when flow reverses to protect pumps, compressors, and other equipment from damage. It complies with DIN standards and has a pressure rating of PN 16, ensuring compatibility and safety in various piping systems. Key features include:Robust carbon steel body for enhanced durability and longevityWafer-type design for easy installation and maintenanceSuitable for horizontal and vertical flow directionsConforms to DIN standards with PN 16 pressure ratingIdeal for water, steam, oil, and non-aggressive mediaOptimize your fluid system’s integrity and efficiency with this reliable valve, designed to minimize pressure drop and operate silently. Its technical specifications make it a top choice for engineers and procurement specialists seeking quality and compliance in industrial valve 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 | Flanges/PN | L | d1 | D | Weight (kg) |
|---|---|---|---|---|---|---|
| 40 | 16 | 16 | 14 | 22 | 95 | 0.9 |
| 50 | 16 | 16 | 14 | 32 | 109 | 1.2 |
| 65 | 16 | 16 | 14 | 40 | 129 | 1.5 |
| 80 | 16 | 16 | 14 | 54 | 144 | 2.5 |
| 100 | 16 | 16 | 18 | 70 | 164 | 3.3 |
| 125 | 16 | 16 | 18 | 92 | 195 | 4 |
| 150 | 16 | 16 | 20 | 112 | 220 | 4.7 |
| 200 | 16 | 16 | 22 | 154 | 275 | 7.8 |
| 250 | 16 | 16 | 26 | 200 | 332 | 13.5 |
| 300 | 16 | 16 | 32 | 240 | 386 | 22 |
| 350 | 16 | 16 | 38 | 270 | 446 | 37 |
| 400 | 16 | 16 | 44 | 310 | 496 | 56 |
| 450 | 16 | 16 | 50 | 360 | 557 | 68 |
| 500 | 16 | 16 | 56 | 405 | 620 | 84 |








