Wafer butterfly valve manufacturer in USA
SVR Global manufactures wafer style butterfly valves designed to fit between two pipe flanges. The wafer design has no bolt holes of its own, it is clamped in position by the bolts running through the adjoining pipe flanges, setting it apart from lug style valves that mount independently.
How Wafer Butterfly Valves Work?
The Disc:
A circular disc sits at the center of the valve body, mounted on a rotating shaft.
The Stem:
The stem runs through the disc and connects to a handle, gear operator, or actuator, depending on the application.
Rotation Controls Flow:
Fully open - the disc turns parallel to the flow path, allowing near unrestricted passage
Fully closed - the disc turns perpendicular to the flow path and seals against the seat
Partially open - intermediate positions throttle and regulate flow rate
Sealing:
SVR Global valves use an elastomer seat, available in EPDM, Nitrile, or PTFE, that compresses against the disc edge to form a tight seal when the valve is closed.
Quarter Turn Operation:
A 90-degree turn of the stem moves the valve from fully open to fully closed, offering faster operation than multi turn valve types such as gate valves.
Where SVR Global Wafer Butterfly Valves Are Used ?
Water Treatment and Distribution - Used in municipal water systems and sewage treatment plants to control flow.
Fire Protection Systems - Applied to divide the sections of the sprinkler pipe network for maintenance and testing purposes.
Chemical Processing - Set up with PTFE lined seats and discs to deal with corrosive liquids.
Marine and Offshore Applications - Installed in the cooling systems for sea water and ballast tanks due to their compactness.
Power Generation - Used in cooling water circuits and auxiliary process lines at power plants.
Oil and Gas - Applied in process and utility piping across upstream and downstream operations.
Materials Used in SVR Global Wafer Butterfly Valves:
Body | Cast iron Ductile iron Carbon steel (WCB) Stainless steel (CF8 / CF8M, equivalent to 304 / 316) Aluminum bronze, for seawater and marine service
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Disc | Ductile iron with nickel plating Stainless steel (304 / 316) Aluminum bronze PTFE-coated or PFA-coated discs for chemical service
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Seat | EPDM - general water and air service, wide temperature range Nitrile (Buna-N) - oil and petroleum based fluids Viton (FKM) - higher temperature and chemical resistance PTFE - aggressive chemicals and corrosive media Silicone - steam and high temperature air
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Stem |
Stainless steel (410, 420, or 316) One piece or two piece stem designs, depending on valve size
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Manufacturing Standards and Compliance:
Design and Manufacture:
API 609 - design, manufacture, and testing of butterfly valves
MSS SP-67 - general purpose butterfly valve specification
MSS SP-68 - high performance butterfly valve specification
AWWA C504 - rubber seated butterfly valves for waterworks service
ISO 5752 - face to face and center to face dimensions
EN 593 - European standard for industrial butterfly valves
Testing and Inspection:
Fire Safe and Special Service:
Why Manufacturers and Contractors Choose SVR Global?
In house manufacturing - full control over machining, assembly, and quality checks at every stage
Custom configurations - sizes, materials, and end connections built to project specifications
Traceable materials - mill test certificates and documentation supplied with every order
Global supply capability - export experience across multiple regions and industries
Technical support - assistance with sizing, selection, and application-specific requirements
