Midland Industries
Midland Wafer-Style Flangeless Butterfly Valve w/ Buna-N Seat & Gear Handle
- Availability:
- Allow 2-3 Days to Ship
- Weight:
- 0.00 LBS
Description
Midland Wafer-Style Flangeless Butterfly Valve w/ Buna-N Seat & Gear Handle
Midland Wafer-Style Flangeless Butterfly Valves with Buna-N Seats and Gear Handles are designed for dependable shutoff and flow control in compatible commercial, industrial, and HVAC piping systems.
These valves feature a rugged ductile iron body, ductile iron disc, resilient Buna-N (NBR) seat, protective exterior coating, and enclosed manual gear operator. The compact wafer-style body installs between compatible mating flanges while the gear operator provides smooth, controlled operation with reduced manual effort.
Product Highlights
- Midland wafer-style flangeless butterfly valve
- Heavy-duty ductile iron body
- Ductile iron disc
- Resilient Buna-N (NBR) seat
- Manual gear operator with handwheel
- Quarter-turn valve operation
- Suitable for on/off isolation and compatible throttling service
- Compact wafer-style profile
- Designed for installation between mating flanges
- Protective exterior coating for added corrosion resistance
- Suitable for commercial, industrial, HVAC, and compatible fluid systems
Technical Specifications
| Product Type | Wafer-Style Butterfly Valve |
|---|---|
| Brand | Midland |
| Body Material | Ductile Iron |
| Disc Material | Ductile Iron |
| Seat Material | Buna-N (NBR) |
| Body Style | Wafer / Flangeless |
| Operator | Manual Gear Operator |
| Operator Control | Handwheel |
| Operation | Quarter Turn |
| Exterior | Protective Corrosion-Resistant Coating |
| Primary Function | Shutoff and Flow Regulation |
| Typical Service | Commercial, Industrial, HVAC, and Buna-N Compatible Fluid Systems |
Valve Configuration
Wafer-Style Body
The compact flangeless body is designed to fit between compatible mating flanges, minimizing overall valve weight and installation length.
Ductile Iron Disc
The internal ductile iron disc rotates through the flow path to provide shutoff or intermediate positioning.
Gear Operator
The enclosed manual gearbox provides increased mechanical advantage for smoother and more controlled valve operation.
Construction Details
The Midland wafer-style butterfly valve uses a heavy-duty ductile iron body designed for strength and dependable performance in demanding piping systems.
A ductile iron disc works against the resilient Buna-N seat to provide reliable sealing and smooth valve movement.
The protective exterior coating helps resist corrosion, while the enclosed gear operator reduces the force required to open, close, and position the valve.
Why Choose a Wafer-Style Butterfly Valve?
Compact Installation
- Thin wafer-style profile
- Fits between mating flanges
- Reduced installation length
- Lower overall weight
- Useful where piping space is limited
Simple In-Line Design
- No integral end flanges
- Uses compatible mating flanges for installation
- Suitable for many retrofit applications
- Simplifies piping layouts
- Compact valve envelope
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
- Suitable for larger valve installations
Controlled Positioning
- Gradual disc movement
- Supports intermediate positions
- Useful for compatible throttling service
- Helps reduce abrupt flow changes
- Provides stable manual control
Buna-N Seat
Resilient Sealing
The Buna-N seat provides a flexible sealing surface around the disc to support dependable shutoff performance.
Typical Compatibility
Buna-N is commonly used with water, air, oils, petroleum-based fluids, and other compatible industrial media. Exact compatibility should be verified for the intended service.
Ductile Iron Construction
Strong Valve Body
The ductile iron body provides excellent mechanical strength and durability for commercial and industrial piping systems.
Durable Disc
The ductile iron disc provides a rugged flow-control element designed for repeated opening, closing, and intermediate positioning.
Typical Applications
HVAC & Utility Systems
- HVAC piping
- Water systems
- Air systems
- Equipment isolation
- General utility piping
Industrial Systems
- Plant utility piping
- Compatible oil service
- Petroleum-based fluid systems where compatible
- Process support systems
- General industrial flow control
Buna-N vs. EPDM Seat
Buna-N
Buna-N is commonly selected for applications involving oils and petroleum-based fluids in addition to water and air, subject to specific media and temperature compatibility.
EPDM
EPDM is commonly preferred for water, HVAC, and many general-purpose applications but is generally not recommended for petroleum oils and hydrocarbons.
Gear Handle vs. Lever Handle
Gear Handle
A gear operator provides greater mechanical advantage and slower, more controlled 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 a Buna-N 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 ductile iron disc.
What seat material is used?
The valve uses a resilient Buna-N, also known as NBR, seat.
How is the valve operated?
The valve uses an enclosed manual gear operator with a handwheel.
Why use a gear operator?
The gear operator increases mechanical advantage, reducing the force required to move the disc while providing smoother positioning.
Can this valve be used for throttling?
The supplied product information identifies the valve as suitable for on/off isolation and throttling service.
What is the benefit of a wafer-style body?
The wafer-style design provides a compact installation between mating flanges while minimizing valve weight and overall piping length.
What fluids is Buna-N commonly used with?
Buna-N is commonly used with water, air, oils, petroleum-based fluids, and other compatible industrial media. Exact compatibility should always be confirmed.
What should I verify before ordering?
Confirm nominal valve size, flange compatibility, system pressure, operating temperature, Buna-N media compatibility, and installation requirements before ordering.
Important Ordering & Installation Notes
- This listing is for Midland Wafer-Style Flangeless Butterfly Valves with Buna-N seats and manual gear operators.
- Confirm the required nominal valve size before ordering.
- Verify compatibility with the intended mating flanges.
- Confirm system pressure and operating temperature requirements.
- Verify Buna-N compatibility with the intended fluid before installation.
- Confirm ductile iron body and disc compatibility with the system 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 bolting arrangement for wafer-style installation.
- Cycle the valve after installation to confirm unobstructed movement.
- Do not exceed manufacturer pressure, temperature, or torque limitations.
- Install according to applicable piping standards, project requirements, and manufacturer recommendations.
