Midland Industries
Midland Double Door Wafer Check Valve
- Availability:
- Allow 2-3 Days to Ship
- Weight:
- 0.00 LBS
Description
Midland Double Door Wafer Check Valve
Midland Double Door Wafer Check Valves are designed to prevent reverse flow in compatible pressurized piping systems while providing a compact, space-saving installation between mating flanges.
Available in sizes from 2" through 12", these valves use spring-assisted dual discs for rapid closing action that helps reduce valve slam and water hammer. Their wafer-style body is well suited for water distribution, HVAC, irrigation, and general industrial piping applications where dependable backflow prevention is required.
Product Highlights
- Midland double door wafer check valve
- Designed to prevent reverse flow
- Dual spring-assisted disc design
- Rapid closing action helps reduce valve slam
- Helps minimize water hammer
- Compact wafer-style body
- Installs between compatible mating flanges
- Lightweight, space-saving configuration
- Available in sizes from 2" through 12"
- Suitable for water and compatible general industrial service
- Useful for water distribution, HVAC, irrigation, and industrial piping systems
Technical Specifications
| Product Type | Double Door Wafer Check Valve |
|---|---|
| Brand | Midland |
| Valve Function | Automatic Backflow Prevention |
| Body Style | Wafer |
| Disc Configuration | Dual Disc / Double Door |
| Closing Mechanism | Spring Assisted |
| Installation | Between Compatible Mating Flanges |
| Available Sizes | 2" Through 12" |
| Primary Function | Prevent Reverse Flow |
| Typical Media | Water and Other Compatible Fluids |
| Typical Applications | Water Distribution, HVAC, Irrigation, and General Industrial Piping Systems |
Valve Configuration
Wafer Body
The compact valve body installs between compatible mating flanges, helping reduce overall piping space and valve weight.
Dual Spring-Assisted Discs
Two internal doors open with forward flow and respond quickly when flow decreases or begins to reverse.
Automatic Check Operation
The valve operates automatically from system flow and does not require a manual handle or external operator.
Construction Details
The Midland double door wafer check valve uses a compact wafer-style body that fits between compatible mating flanges while minimizing installation length and overall weight.
Spring-assisted dual discs open with forward system flow and close rapidly as flow slows or reverses, helping provide dependable backflow prevention.
The streamlined internal configuration supports efficient flow while the quick-closing disc design helps reduce valve slam and pressure surges associated with reverse flow.
Why Choose a Double Door Wafer Check Valve?
Fast Backflow Protection
- Automatic check valve operation
- Dual spring-assisted discs
- Rapid response to flow reversal
- Helps reduce valve slam
- Helps minimize water hammer
Compact Installation
- Wafer-style body
- Installs between mating flanges
- Requires less piping length than many full-body designs
- Lightweight configuration
- Useful where installation space is limited
How the Dual-Disc Design Works
Forward Flow
System pressure pushes the two discs open, allowing media to travel through the valve in the intended direction.
Reverse Flow
As forward flow decreases or reverses, the spring-assisted discs move toward the closed position to help prevent backflow through the piping system.
Wafer-Style Installation
Between-Flange Mounting
The valve body is positioned between compatible pipeline flanges and secured as part of the flanged piping assembly.
Space-Saving Design
The short wafer body reduces face-to-face installation space compared with many conventional flanged check valve designs.
Typical Applications
Water & Building Systems
- Water distribution piping
- HVAC systems
- Chilled and heating water systems
- Building mechanical piping
- Pump discharge piping
Irrigation & Industrial Systems
- Irrigation systems
- General industrial piping
- Process utility systems
- Equipment protection applications
- Compatible fluid transfer systems
Double Door vs. Swing Check Valve
Double Door Wafer Check Valve
A double door wafer check valve uses two spring-assisted discs and a compact body for rapid closure and space-efficient installation between flanges.
Swing Check Valve
A traditional swing check valve generally uses a single hinged disc and a larger valve body, with closing action primarily influenced by gravity and reverse flow.
Water Hammer Reduction
Rapid Disc Response
Spring-assisted discs begin closing as forward flow decreases, reducing the distance and time required for the valve to reach the closed position.
Reduced Valve Slam
Faster closing action can help reduce the sudden impact associated with reverse-flow valve slam and resulting pressure surges.
Our valve, fitting, and industrial product specialists can help review your valve size, FIP connection requirements, pressure rating, handle configuration, media compatibility, and application before you order.
Email the GetPipe.com Team Visit Quick SupportFrequently Asked Questions
What is a double door wafer check valve?
It is an automatic check valve that uses two spring-assisted discs inside a compact wafer body to allow forward flow and help prevent reverse flow.
What sizes are available?
The supplied product information lists sizes from 2" through 12".
How is the valve installed?
The wafer-style valve body is installed between compatible mating flanges in the piping system.
Does the valve require a handle?
No. Check valves operate automatically in response to system flow direction and pressure conditions.
What is the purpose of the springs?
The springs assist the dual discs in closing rapidly when forward flow decreases or begins to reverse.
How does this design help reduce water hammer?
The spring-assisted discs close quickly as flow slows, helping reduce reverse-flow velocity and valve slam before full closure.
What applications are these valves commonly used in?
The supplied information identifies water distribution, HVAC, irrigation, and general industrial piping systems as typical applications.
What direction should the valve be installed?
Install the valve so the body flow arrow points in the intended direction of normal system flow.
Why choose a wafer-style valve?
A wafer valve offers a compact face-to-face dimension and typically requires less installation space and weight than larger full-body flanged valve designs.
What should I verify before ordering?
Confirm valve size, mating flange compatibility, pressure class, face-to-face dimensions, flow direction, media compatibility, operating pressure, and temperature requirements before ordering.
Important Ordering & Installation Notes
- This listing is for a Midland Double Door Wafer Check Valve.
- Available sizes are listed from 2" through 12".
- Confirm the required nominal valve size before ordering.
- Verify compatibility with the intended mating flange standard and pressure class.
- Confirm valve face-to-face dimensions and available installation space.
- Install the valve with the flow arrow pointing in the normal direction of system flow.
- Verify the correct installation orientation for the specific piping arrangement.
- Ensure mating flanges are properly aligned before tightening the piping assembly.
- Avoid using flange bolts to force misaligned piping into position.
- Confirm adequate clearance for full internal disc movement.
- Verify media compatibility with all valve body, disc, spring, and sealing materials.
- Confirm system operating pressure and temperature requirements before installation.
- Inspect the valve periodically where required by the piping system maintenance program.
- Install according to applicable piping codes, project specifications, and manufacturer recommendations.
