Midland Industries
Midland Wafer-Style Flangeless Butterfly Valve w/EPDM Seat & Gear Handle
- Availability:
- Allow 2-3 Days to Ship
- Weight:
- 0.00 LBS
Description
Midland Wafer-Style Flangeless Butterfly Valve w/ EPDM Seat & Gear Handle
Midland Wafer-Style Flangeless Butterfly Valves with EPDM Seats and Gear Handles are designed for dependable shutoff and flow control in compatible commercial, HVAC, water distribution, and industrial piping systems.
These valves feature a rugged ductile iron body, corrosion-resistant stainless steel disc, resilient EPDM seat, and enclosed manual gear operator. The compact wafer-style body installs between compatible ANSI Class 125/150 flanges while minimizing overall weight and installation space.
Product Highlights
- Midland wafer-style flangeless butterfly valve
- Ductile iron body construction
- Stainless steel disc
- EPDM resilient seat
- Manual gear operator with handwheel
- Quarter-turn valve operation
- Bidirectional flow capability
- Compact wafer-style body
- Compatible with ANSI Class 125/150 flanges
- Gear operator reduces required operating effort
- Designed for water, HVAC, and compatible general industrial service
Technical Specifications
| Product Type | Wafer-Style Butterfly Valve |
|---|---|
| Brand | Midland |
| Body Material | Ductile Iron |
| Disc Material | Stainless Steel |
| Seat Material | EPDM |
| Body Style | Wafer / Flangeless |
| Operator | Manual Gear Operator |
| Operator Control | Handwheel |
| Operation | Quarter Turn |
| Flange Compatibility | ANSI Class 125/150 |
| Flow Direction | Bidirectional |
| Primary Function | Shutoff and Flow Control |
| Typical Service | Water, HVAC, and Other EPDM-Compatible Fluids |
Valve Configuration
Wafer-Style Body
The compact flangeless body is designed to fit between compatible mating flanges using the flange bolting to secure the valve in position.
Stainless Steel Disc
The stainless steel disc rotates through the flow path to provide shutoff or intermediate positioning while offering corrosion resistance in compatible service.
Gear Operator
The enclosed manual gearbox provides increased mechanical advantage for smoother, more controlled valve operation.
Construction Details
The Midland wafer-style butterfly valve uses a rugged ductile iron body designed for strength and dependable performance in commercial and industrial piping systems.
A corrosion-resistant stainless steel disc works against the resilient EPDM seat to provide reliable sealing and smooth valve movement.
The enclosed gear operator reduces the manual force required to rotate the disc, making valve positioning easier where higher operating torque is present.
Why Choose a Wafer-Style Butterfly Valve?
Compact Installation
- Thin wafer-style body
- Fits between mating flanges
- Reduced installation length
- Lower weight than many flanged valve designs
- Useful where piping space is limited
Efficient Piping Layout
- No integral end flanges
- Uses existing mating flanges for installation
- Compact valve envelope
- Suitable for retrofit applications
- Simplifies many in-line installations
Why Choose a Gear Operator?
Reduced Operating Effort
- Gear reduction increases mechanical advantage
- Reduces required handwheel force
- Smooth opening and closing
- Useful where valve torque is higher
- Convenient for larger valve installations
Controlled Positioning
- Gradual disc movement
- Supports intermediate valve positions
- Helps prevent abrupt changes in flow
- Provides stable manual control
- Suitable for shutoff and compatible throttling service
EPDM Seat
Resilient Sealing
The EPDM seat provides a flexible sealing surface around the stainless steel disc to support dependable shutoff performance.
Typical Compatibility
EPDM is commonly used for water, HVAC, and many general-purpose fluid applications but is generally not recommended for petroleum oils or hydrocarbon-based fluids.
Stainless Steel Disc
Corrosion Resistance
The stainless steel disc provides strong corrosion resistance for many compatible water and general industrial fluid applications.
Reliable Operation
The disc is designed for repeated opening, closing, and intermediate positioning within the manufacturer's specified service conditions.
Typical Applications
Water & HVAC Systems
- Water distribution piping
- Chilled water systems
- Heating water systems
- HVAC mechanical systems
- Building utility piping
Industrial Systems
- Plant utility piping
- Industrial water service
- Equipment isolation
- Process support systems
- Compatible general fluid service
Wafer-Style vs. Lug-Style Butterfly Valve
Wafer-Style
A wafer-style valve is sandwiched between mating flanges and typically uses through-bolts spanning the flange assembly. Its compact body helps minimize installation space and weight.
Lug-Style
A lug-style valve has threaded mounting lugs around the valve body, allowing each mating flange to be bolted independently and potentially supporting dead-end service where rated.
Gear Handle vs. Lever Handle
Gear Handle
A gear operator provides greater mechanical advantage and slower, more controlled disc movement where higher operating torque is required.
Lever Handle
A lever handle provides faster direct quarter-turn operation and is commonly used where valve torque can be comfortably controlled manually.
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 type of valve is this?
This is a wafer-style flangeless butterfly valve with an EPDM seat and manual gear operator.
What material is the valve body?
The supplied product information identifies a ductile iron body.
What material is the disc?
The supplied product information identifies a stainless steel disc.
What seat material is used?
The valve uses a resilient EPDM seat.
How is the valve operated?
The valve uses an enclosed manual gear operator with a handwheel.
Why use a gear operator?
A gear operator increases mechanical advantage, reducing the force required to move the valve disc and allowing smoother positioning.
What flanges is this valve compatible with?
The supplied product information identifies compatibility with ANSI Class 125/150 flanges.
Does the valve support bidirectional service?
Yes. The supplied product information identifies the valve as suitable for bidirectional service.
What is the benefit of a wafer-style body?
The wafer-style body provides a compact, lightweight installation between mating flanges while minimizing overall piping length.
Can EPDM be used with petroleum-based fluids?
EPDM is generally not recommended for petroleum oils or hydrocarbon-based fluids.
What should I verify before ordering?
Confirm nominal valve size, flange compatibility, system pressure, operating temperature, EPDM media compatibility, and installation requirements before ordering.
Important Ordering & Installation Notes
- This listing is for Midland Wafer-Style Flangeless Butterfly Valves with EPDM seats and manual gear operators.
- Confirm the required nominal valve size before ordering.
- Verify compatibility with ANSI Class 125/150 mating flanges.
- Confirm system pressure and operating temperature requirements.
- Verify EPDM compatibility with the intended fluid before installation.
- EPDM is generally not recommended for petroleum oils or hydrocarbon-based fluids.
- Verify stainless steel disc compatibility with the intended media.
- Ensure mating flanges and connected piping are properly aligned before installation.
- Do not use flange bolts to pull misaligned piping into position.
- Verify adequate internal clearance for complete disc rotation.
- Confirm adequate clearance for the gear operator and handwheel.
- Use the appropriate flange bolting arrangement for wafer-style installation.
- Cycle the valve after installation to confirm unobstructed operation.
- Do not exceed manufacturer pressure, temperature, or torque limitations.
- Install according to applicable piping standards, project requirements, and manufacturer recommendations.
