Actuator type: Lever Handle/Worm Gear
Stem position: Concentric
Seat Materials: EPDM/NBR/PTFE
Body Materials: Ductile Iron/Cast Iron
Pressure: PN6/10/16、5/10K、CL150、Table D/E
Suitable temperature：– 20 ~ 120 ℃
Disc type: Ductile Iron,CF8,CF8M
Stem Materials: 45#/420/304/316
Size Range: DN50-DN200
Design standards: EN 593, API 609
Face to Face dimension: EN 558-1, series 20.
Applicable medium： Clear water and neutral liquid
Package: wooden case with plastic layer, wooden pallets with plastic layer, steel crates.
The Wafer Type Butterfly Valve is designed to maintain a seal against bi-directional pressure differential to prevent any backflow, This butterfly valve is featured by a wafer connection: there’re four holes that align with the connected pipeline. Thus the Wafer Type Butterfly Valve is designed to clamp between two flanges in the pipework.
According to the types of sealing: there can be resilient seated butterfly valves and metal seated butterfly valves. The resilient seated butterfly valve is the zero offset sort, which means that there’s no offset near the stem. Thus our Wafer Style Resilient Seated Butterfly Valve is also known as concentric butterfly valve.
This resilient seated butterfly valve has various types of seat material: PTFE, EPDM, or NBR. For this reason, this resilient seated butterfly valve is also known as Wafer Type EPDM Seat Butterfly Valve or Rubber Seat Butterfly Valve. Unlike the offset seated butterfly valve, the rubber seat of this concentric butterfly valve covers the body ensuring that the valve body doesn’t come in contact with the material passing through the pipe.
We accept customized orders upon quantity.
The resilient seated butterfly valve is used to start, stop, and regulate the flow of fluids through pipelines. It’s suitable for the following applications:
The pharmaceutical, chemical, and food industries
Marine and petrochemical processing
Water and Wastewater applications
Oil and gas production, fuel handling systems
Fire protection systems
4. Advantages of our products:
Tight sealing: our resilient seated butterfly valve offers a better sealing function as it closes; this rubber seat butterfly valve is equipped with nitrile and oil-resistant rubber that has a long service life.
Disc of high strength: the butterfly plate of the valve is a frame structure with high strength that resists the large flow; besides, the overall baking vanish design effectively prevents corrosion and can be used in different media.
Bidirectional sealing function: our wafer-type butterfly valve isn’t controlled by the flow direction of the medium; it’s featured by a bidirectional sealing function. Thus our concentric butterfly valve isn’t affected by the spatial position and it can be installed in any direction.
Multiple functions: this concentric butterfly valve is designed with a disc that sits in the center of the valve body; thus it’s not only used for isolating but also for regulating the flow. By rotating the closed disc 90°, the valve is fully opened; by opening the valve incrementally, the flow can also be throttled.
Low cost and less maintenance: our Cast Iron/Ductile Iron Butterfly Valve is of heavy-duty material at low cost; this butterfly valve is featured by the lightweight and requires less maintenance.