The wafer style butterfly valve is designed to maintain a seal against bi-directional pressure differential to prevent any backflow in systems designed for unidirectional flow. It accomplishes this with a tightly fitting seal; i.e., gasket, o-ring, precision machined, and a flat valve face on the upstream & downstream sides of the valve.
Lug-style valves have threaded inserts at both sides of the valve body. This allows them to be installed into a system using two sets of bolts and no nuts. The valve is installed between two flanges using a separate set of bolts for each flange. This setup permits either side of the piping system to be disconnected without disturbing the other side.
- Top plate double drilled to fit ISO 5211 dimensions and standard secondary bolt circle dimensions
- Unique centre-lock seat design virtually eliminates any seat movement during the seating and un-seating of the disc
- Unique stem retention system to provide blow-out proof stem and easy assembly and disassembly of valve
- Heavy duty one piece wafer and lugged wafer body designed to withstand specified pressures
- Nylon coated high strength disc with hand polished disc edge and hubs ensures excellent corrosion resistance to several chemical media
- Heavy duty square grooved seat design with moulded O-ring seals to serve as flange gasket
- One piece stem with close tolerances double D drive eliminates the need for disc screws or taper pins
- Heavy duty bearing absorbs the forces acting on the stem/disc assembly due to line pressure
- Water works
- Power plants
- Sewage plants
- Process industries
- Chemical and petrochemical plants
- Manufacturing Standard - API609/ BSEN 593 (BS 5155)
- Size Range 50 to 600 mm
- Pressure Ratings PN10, PN16
- End Connection To suit ANSI # 125/ 150
- Origin from "Canada"
