End Connection: Flange
Stem position: Double Offset
Body Materials: Ductile Iron
Seat Material: EPDM/NBR/VITON
Pressure: PN 10 / PN 16/PN25/PN40
Suitable temperature：– 10 ~ 180℃
Disc type: Ductile Iron
Size Range: DN100-DN2400
Design standards: EN593
Face to Face dimension: EN 558-1, Series 14
Flange standard: EN1092/ISO7005
Applicable medium: Industrial water, Sewage
Package: wooden case with plastic layer, wooden pallets with plastic layer, steel crates.
1. Introduction
The Resilient Seated Butterfly Valve with Flange Connection is characterized by the following features:
Flange connection-It’s the easiest and the most commonly used type of connection to be installed and uninstalled from a pipeline. This butterfly valve of flange type can be assembled and disassembled to the pipe quickly and easily.
Double offset-Due to this geometry, the circumferential seal is moved away from the seat and thus the strain on it is relieved when the valve opens. This reduces the wear and ensures a long service life.
Rubber seat-It’s also known as resilient seat. This resilient seated butterfly valve is usually equipped with rubbery material against which the internal disc seals against. The most common types are EPDM, NBR or PTFE, etc. Actually, the PTFE Lined Butterfly Valve is one of the most popular typeS: this seat is deformable so it can seal even though some debris is caught between the valve disc and the seat.
2. Specifications
3. Applications
This eccentric butterfly valve is also known as high-performance butterfly valve as it’s designed for longevity. For this reason, this double eccentric butterfly valve with resilient seat is used for demanding processes that are:
Water/wastewater treatment
Chemical processes
Oil and gas (chemical, petrochemical, and offshore)
Power generation
Shipbuilding
HVAC
Pulp and paper
Higher pressure steam
4. Advantages of our products
- Tight sealing and less maintenance: with a double offset design and a rubber seat, this Double Eccentric Resilient Seated Butterfly Valve with flange end connection offers a good sealing effect as well as the ball valve. However, unlike the packing gland seal of the ball valve, which requires lots of maintenance work, this Eccentric Butterfly Valve Flange Type is easier to clean and repair.
- Simple actuation process: This kind of Resilient Seated Butterfly Valve is designed with an elastomeric seal that generally requires less torque of actuation, which reduces the actuator complexity and eliminates the initial cost
