Products Description
Overview
Body: Slim, wafer-like design that fits between two pipeline flanges.
Disc: A circular plate (the "butterfly") that rotates to open or close the valve.
Stem/Shaft: Connects the disc to the actuator or handle.
Seat/Liner: Provides a sealing surface, typically made of rubber, PTFE, or other elastomers.
Working Principle
The disc rotates 90° within the valve body.
Open position: Disc is parallel to flow → minimal obstruction.
Closed position: Disc is perpendicular to flow → seals the passage.
Operated manually (lever/gear) or automatically (pneumatic, electric, or hydraulic actuators).
Features
Product Name: Wafer butterfly valve
Material: Ductile Iron
Working Pressure: 1.6Mpa
Surface Finishing: Epoxy Red or Blue
Products Parameter
forede® wafer butterfly valve with different size and standard for option:
| Model | Material | Size | Working Pressure |
Surface Finishing |
| ZSXDF7-Q-50-16-S | Ductile Iron |
DN50(2'') |
16 bar |
Epoxy Red or Blue |
| ZSXDF7-Q-65-16-S | Ductile Iron |
DN65(2.5'') |
16 bar |
Epoxy Red or Blue |
| ZSXDF7-Q-80-16-S | Ductile Iron |
DN80(3'') |
16 bar |
Epoxy Red or Blue |
| ZSXDF7-Q-100-16-S | Ductile Iron |
DN100(4'') |
16 bar |
Epoxy Red or Blue |
| ZSXDF7-Q-125-16-S | Ductile Iron |
DN125(5'') |
16 bar |
Epoxy Red or Blue |
| ZSXDF7-Q-150-16-S | Ductile Iron |
DN150(6'') |
16 bar |
Epoxy Red or Blue |
FAQ
Q: What is a wafer butterfly valve?
A wafer butterfly valve is a type of quarter-turn valve used to regulate or isolate flow in pipelines. It has a disc mounted on a rotating shaft, which rotates 90° to open or close. The "wafer" design means it is sandwiched between two pipe flanges using bolts, without needing flange holes on the valve body.
Q2: What are wafer butterfly valves used for?
They are commonly used in water supply, HVAC, chemical processing, fire protection, food & beverage, and general industrial piping systems for shut-off and throttling services.
Q3: What is the difference between wafer and lug type butterfly valves?
Wafer type: Fits between two flanges, held in place with through-bolts. Not suitable for dead-end service.
Lug type: Has threaded inserts (lugs) for bolts, allowing one side of the piping to be disconnected without affecting the other. Can be used in dead-end service (depending on rating).
Q4: What pressure ratings are typical for wafer butterfly valves?
Most wafer butterfly valves are designed for PN10, PN16, Class 150, or equivalent pressure ratings. Higher-performance designs may handle higher pressures.
Q6: Can wafer butterfly valves be used for throttling?
Yes. They are suitable for throttling and regulating flow, but for precise control, a globe valve or control valve may be preferred.
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