Double flanged type EN593
Face to face dimension acc. To ISO5752 series 14(DIN3202 F4)
Flange and drilling acc. To ISO7005-2(EN1092-2, DIN2501)

1. Size: DN100--DN3600;
2. Pressure: PN10--PN40;
3. Medium: Water and low-corrosive liquid.
4. Suitable temperature: -10~120 degree
5. Connection type: Flange, wafer, extension.

Usage
Bi-directional rubber seated butterfly valve (flange/wafer/extension type) were developed by our company in 1991, with the constant improvement and replacement, the product performance is in the lead level domestically as well as worldwide, it is widely used to throttle or adjust medium flow volume in industrial pipeline in the fields of water supply and drainage, petroleum, power and municapal construction.

Extension type bi-directional rubber seated butterfly valve assembles the functions of flange two-way sealing butterfly valve and pipeline stretchy unit. It is used not only as throttling or adusting but also eliminating installation stress. It is convenient for installation and dismantle, this comprehensive technological development was first realized by our company in domestic and worldwide valve industry.

Characteristics
1. Bi-directional rubber seated function, specially suitable for the working condition with two-way medium flow direction.
2. With the eccentric sealing structure, the valve possesses the function fo more closing more tight, and reliable sealing performance.
3. The material of valve body and butterfly disc main body is cast iron, sealing material is stainless acid-proof steel and butane oil-proof rubber and long life usage.
4. The valve axle adopts semi-axle structure, butterfly disc structure is truss type, high strong butterfly board, big flow area, small resistance and little consumption of energy.