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Our Valve Applications in Key Industries

Chemical Processing

Petrol Chemical

O.P.G & Nuclear

Pulp

Mining

Water & Sewage

Steam System

Boiling System
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Wafer Silent Check Valves - Cast Iron, Carbon Steel & Stainless Steel

Construction and Components of a Wafer Type Check Valve
Spring
Valve body
Disc/plate
Seat

How Does a Wafer-Type Check Valve Work?

Types of Wafer Type Check Valves


Applications of Wafer Type Check Valves
Used in mining applications.
These valves are used in chemical manufacturing plants.
Employed in water supply systems to prevent water contamination.
Utilized in pharmaceutical applications.
Used in steam power generation plants to control the flow of water and steam.
Applied in food and beverage manufacturing plants.
Essential in oil and gas transportation and refinery applications.
Advantages of wafer type check valves
Disadvantages of Wafer Type Check Valves
Unidirectional Fluid Control
Limitations in Pulsating Flow Applications
Troubleshooting Wafer Type Check Valves
- The pipe feeding the valve is blocked. Check the pipe for any blockage and remove any foreign material obstructing fluid flow.
- There is low suction pressure relative to the valve spring strength. Increase the suction pressure or use a wafer type check valve with a lower spring strength to make it easier for the valve plate to open.
- The connecting bolts are loose. Tighten the bolts and nuts to the torque recommended by the wafer type check valve manufacturer.
- The gasket is worn out or damaged. Replace the gasket.
- The disc is trapped in the wide-open position. Follow the manufacturer’s instructions to open the valve and remove any material trapping the disc.
- Valve springs are damaged. Replace the valve.
Dimensions
Item # | Qty | Description | Material | ASTM |
1 | 1 | Body(Epoxy Coated) | Ductile Iron | A53665-45-12 |
2 | 1 | Bushing | Bronze | C95400 |
3 | 1 | Spring | Stainless Steel | 302 |
4 | 1 | Poppet | Bronze | C87600 |
5 | 1 | Seat Ring | Bronze | C87600 |
6 | 1 | O-Ring | EPDM | 5778-70 |
7 | 1 | O-Ring | EPDM | 5778-70 |

Size | Part # | ØA | B | ØC | Weight | #of Bolts | Bolt Size by Flange | ||||||||
inch | mm | inch | mm | inch | mm | inch | mm | lbs | kg | 150# | 300# | 150# | 300# | ||
2 | 50 | 2434R | 2-13/32 | 61 | 2-5/8 | 67 | 4-1/4 | 108 | 5 | 2.5 | 4 | 8 | 5/8×5-1/4 | 5/8×5-1/2 | |
3 | 80 | 2435R | 3-1/4 | 83 | 3-1/8 | 79 | 5-3/4 | 146 | 11 | 5 | 4 | 8 | 5/8×6-1/4 | 3/4×7 | |
4 | 100 | 2436R | 4-3/8 | 111 | 4 | 102 | 7 | 178 | 18 | 8 | 8 | 8 | 5/8×7 | 3/4×8 | |
6 | 150 | 2437R | 5-29/32 | 150 | 5-1/2 | 140 | 9-3/4 | 248 | 36 | 16.5 | 8 | 12 | 3/4×8-3/4 | 3/4×10 | |
Flomatic Corporation can accept no responsbility to possible errors in catalogues, brochures and other printed material. Flomatic Corporation reserves the right to alter its products without notices. This also applies to product already agreed. All trademarks in this material are property of the respective companies. All righs reserved. Flomatic Corporation. The drawing & information on this drawing sheet are the sole & exclusive property of Flomatic Corporation. Any reproduction, distribution, display or use of these drawings or information in whole or in part without written authorized of Flomatic Corporation is strictly prohibited. |

Item # | Qty | Description | Material | ASTM |
1 | 1 | Body(Epoxy Coated) | Ductile Iron | A53665-45-12 |
2 | 1 | Bushing | Bronze | C95400 |
3 | 1 | Spring | Stainless Steel | 302 |
4 | 1 | Poppet | Bronze | C87600 |
5 | 1 | Seat Ring | Bronze | C87600 |
6 | 1 | O-Ring | EPDM | 5778-70 |
7 | 1 | O-Ring | EPDM | 5778-70 |
Size | Part # | ØA | B | ØC | Weight | #of Bolts | Bolt Size by Flange | ||||||||
inch | mm | inch | mm | inch | mm | inch | mm | lbs | kg | 150# | 300# | 150# | 300# | ||
2-1/2 | 65 | 2432R | 2-9/16 | 65 | 2-7/8 | 73 | 5 | 127 | 7 | 3 | 4 | 8 | 5/8×5-1/4 | 3/4×6-1/2 | |
5 | 125 | 2433R | 5-1/4 | 133 | 4-3/4 | 121 | 8-3/8 | 213 | 25 | 11.5 | 8 | 8 | 3/4×7-3/4 | 3/4×9 | |
Flomatic Corporation can accept no responsbility to possible errors in catalogues, brochures and other printed material. Flomatic Corporation reserves the right to alter its products without notices. This also applies to product already agreed. All trademarks in this material are property of the respective companies. All righs reserved. Flomatic Corporation. The drawing & information on this drawing sheet are the sole & exclusive property of Flomatic Corporation. Any reproduction, distribution, display or use of these drawings or information in whole or in part without written authorized of Flomatic Corporation is strictly prohibited. |
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Additional General Insights Here
Specs of Wafer Type Check Valves
Pressure Rating
Size and Dimensions
Material Compatibility
Temperature Range
Features of Wafer Type Check Valves
Slim Profile
Wafer Type Check Valves have a slim profile, making them ideal for installations where space is limited. This slim design allows the valve to fit snugly between two flanges without adding significant bulk to the piping system. Despite their slim profile, these valves are built from sturdy materials like stainless steel and cast iron, ensuring long-term durability.
Disc Design
The disc in a Wafer Type Check Valve is designed to swing open and close with fluid flow. This disc mechanism allows for smooth operation, enabling fluid to pass through when the flow is in the right direction. When the flow reverses, the disc quickly shuts to block backflow, thus protecting the system. Similarly, the design of the disc establishing minimal pressure drop, maintaining efficiency in the fluid flow.
Universal Fit
Wafer Type Check Valves are engineered to fit universally between various flange standards. This universal fit feature simplifies the selection process, making it easier to integrate the valve into existing piping systems. The valves are available in different sizes, accommodating a wide range of pipeline diameters. This versatility allows them to be used in numerous applications, from low to high pressure and temperature conditions.
Benefits of Wafer Type Check Valves
Space Efficiency
The slim profile of Wafer Type Check Valves allows for efficient use of space within piping systems. Their design requires less room for installation, making them perfect for areas with limited space. This space efficiency is crucial in complex piping networks where optimizing space can lead to better system organization. It also reduces the need for extensive support structures, simplifying the overall installation process.
Easy Installation
Wafer Type Check Valves are straightforward to install due to their compact design and universal fit. For instance, the lightweight nature of these valves makes handling and positioning easier during installation. Their compatibility with various flange standards means they can be easily integrated without the need for special adaptors. This ease of installation translates to reduced labor costs and quicker setup times.
Enhanced System Protection
By preventing backflow, Wafer Type Check Valves provide enhanced protection for the entire piping system. The quick-closing disc mechanism helps prevent damage to pumps and other critical components caused by reverse flow. At NTVAL, this protection guarantees that the system operates smoothly and efficiently, reducing the risk of costly repairs and downtime.
Applications of Wafer Type Check Valves
O.P.G & Nuclear
Water and Sewage
HVAC Systems
Pulp and Mining


3 Considerations When Buying a Wafer Type Check Valve
01
Fire Safe Design
02
Lightweight and Compact Design
03
Low Cracking Pressure and Pressure Loss
FAQ
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