Wafer Butterfly Valves Manufacturers
VALVE Categories
Wafer butterfly valve means that the butterfly valve body has no flange, and the flanges on both sides of the pipeline clamp the butterfly valve to fix it.
Pneumatic Wafer Soft Seal Butterfly Valve D671X Ductile Iron Stainless Disc
Handle Wafer High Performance Double Eccentric Butterfly Valve Carbon Steel Stainless
Handle Wafer Soft Seal Butterfly Valve D72X Ductile Iron Stainless Disc
Pneumatic Triple Offset Hard Seal Wafer Butterfly Valve D673H Cast Steel Stainless
Electric Triple Offset Hard Seal Wafer Butterfly Valve D973H Cast Steel Stainless
Ripple Insulation Cover High Temperature Wafer Butterfly Valve Laminated Disc Seal
ISO Flange Connected High Vacuum Butterfly Valve Clamped Wafer Handle Operated
Worm Gear Ductile Iron FEP Lined Wafer Butterfly Valve D371F
Pneumatic Aluminum Alloy Clamp Butterfly Valve
High Performance Pneumatic Wafer Stainless Steel Butterfly Valve
ASCO Explosion-Proof Solenoid Valve Pneumatic Fluorine Lined Butterfly Valve
High Performance Pneumatic Clamp Butterfly Valve D672F
Stainless Steel 316L Sanitary Insulated Jacket Tri-Clamp Butterfly Valve TC Connection
Cast Steel WCB Lined PTFE Worm Gear Wafer Butterfly Valve D371F46
Worm Gear Stainless Steel Lined PTFE Wafer Butterfly Valve PFA FEP
Pneumatic Stainless Steel Lined PTFE Proportional Control Butterfly Valve
JIS20K Three Eccentric Clamp Butterfly Valve Metal Hard Seal
JIS 10K Worm Gear Wafer Butterfly Valve Triple Offset Metal Hard Seal
Worm Gear Steel Lined PTFE Wafer Butterfly Valve Handle ISO5211
Handle Operated High Performance Wafer Butterfly Valve Double Eccentric
ISO Flange Connected High Vacuum Butterfly Valve
High Performance Wafer Butterfly Valve Smooth Bare Stem ISO5211 Double Eccentric
Worm Gear High Performance Wafer Butterfly Valve D372F
High Platform High Performance Wafer Butterfly Valve
Corrugated Insulation Cover High Temperature Wafer Butterfly Valve Worm Gear Operated
JIS 10K butterfly valve Wafer
High temperature butterfly valve Flange&wafer
with lock butterfly valve Worm gear Operated Key
Signal feedback butterfly valve with limit switch
JIS 20K Triple Offset Wafer butterfly valve-metal seated
Pneumatic wafer butterfly valve
Wafer with bare shaft high performance butterfly valve – platform
high performance wafer pneumatic buttefly valve
Handle lever operated High Performance butterfly valve
High Performance butterfly valve bare shaft carbon steel
high performance wafer butterfly valve worm gear box operated
Trekre Wafer Butterfly Valves Series
Wafer Butterfly Valve Construction
A wafer butterfly valve has a body designed to fit between compatible pipeline flanges using the specified bolting arrangement. The valve disc rotates around a stem to open or close the flow passage. When open, the disc remains inside the flow path, and the resulting pressure loss depends on the actual disc shape, valve size, opening angle and operating flow.
Wafer describes the body connection rather than a single disc or seat design. Centerline resilient-seated, double-eccentric high-performance and triple-offset metal-seated butterfly valves have different sealing geometries and service capabilities. These designs must not be treated as interchangeable simply because they share a between-flange connection.
Seat and Body Options
Resilient-seated butterfly valves commonly use an elastomeric seat selected for the applicable fluid, pressure and temperature. Fluoropolymer-lined designs use a chemically resistant barrier where the selected lining and wetted components suit the medium. Metal-seated designs employ a different sealing arrangement and may be selected for higher-temperature or demanding pressure conditions when the exact model is appropriately rated.
PTFE, FEP and PFA are distinct fluoropolymers. EPDM, NBR and other elastomers also have different compatibility and temperature limits. The selected body, disc, stem, seat and sealing materials must be checked as an assembly.
Manual, Pneumatic and Electric Operation
Wafer butterfly valves may be operated by a lever, worm gearbox, pneumatic actuator or electric actuator when the specific model supports that mounting arrangement. Actuator output must satisfy the valve torque requirement under the maximum specified differential pressure. For automated installations, confirm operating time, control signals, required fail action and position feedback.
Wafer Butterfly Valve Selection Checklist
| Requirement | Selection check |
|---|---|
| Flange connection | Companion flange standard, drilling, facing and fastener arrangement |
| Disc and seat design | Centerline, double-eccentric or triple-offset construction |
| Materials | Body, disc, stem, seat and any lining exposed to the process fluid |
| Pressure and temperature | Actual product pressure-temperature rating and differential-pressure limits |
| Flow behavior | Required Cv/Kv, operating opening and available pressure loss |
| Drive arrangement | Manual or powered actuator with suitable torque and mounting |
| Installation | Flow direction, disc clearance, pipe alignment and service access |
Installation Considerations
Before installation, confirm that the disc can rotate without interference from the mating flanges or pipe bore. The required valve position during installation depends on the seat and disc design and must follow the supplied instructions. Tighten fasteners evenly using the specified arrangement, and avoid imposing pipe misalignment or external loads on the valve.
Not every wafer butterfly valve must be installed horizontally. Permitted stem orientation, flow direction and installation position depend on the selected construction and service. Do not assume that a conventional butterfly valve can pass a pipeline pig, provide zero leakage under every condition or operate with every corrosive medium.
Compare butterfly valves, pneumatic butterfly valves and electric butterfly valves for different installation and operating arrangements.
Frequently Asked Questions
Will this wafer butterfly valve fit my existing pipe flanges? Confirm the companion flange standard, drilling, facing and fastener arrangement for the selected valve. Also check that the disc can rotate without interference from the mating flanges or pipe bore. A wafer connection description alone does not establish compatibility with every flange.
Which seat or lining should I choose for my process medium? Check the actual medium, pressure and temperature against the selected seat or lining and the complete wetted material arrangement. EPDM, NBR, PTFE, FEP and PFA have different properties and limits. Confirm the body, disc, stem and sealing materials as an assembly rather than choosing by material name alone.
Can this wafer butterfly valve be used for flow control? Some designs can, but the selected valve must be sized and rated for the required control range, differential pressure, flow behavior and operating frequency. Confirm the disc and seat construction and the actuator torque and control requirements for the actual service.