Stainless steel butterfly valve adopts three eccentric multi-level metal hard seal structure, is widely used in medium temperature ≤425ºC gold, electric power, petrochemical, water supply and drainage and municipal construction and other industrial pipelines, for regulating flow and load flow body use.The valve adopts three eccentric structure, seat and plate sealing surface are made of different hardness and stainless steel, with good corrosion resistance, long service life. Butterfly valve opening and closing parts is a disc disc, rotating around its own axis in the valve body, so as to open and close or adjust the valve called butterfly valve. Butterfly valve fully open to fully closed is usually less than 900, butterfly valve and butterfly rod themselves do not have self-locking force, in order to butterfly plate positioning, worm gear reducer should be installed on the valve stem. The worm gear reducer can not only make the disc have self-locking ability, make the disc stop at any position, but also improve the operation performance of the valve. Industrial special butterfly valve characteristics of high temperature, high pressure range, nominal diameter of the valve, the valve body is made of carbon steel, valve plate sealing ring using metal ring instead of rubber ring. Large high temperature butterfly valve made of steel plate welding, mainly used for high temperature medium smoke duct and gas pipeline.

Product Description

1) Design and manufacture standards:
A) Wafer and lug: API 609, DIN3354
B) Flange and weld: BS5155 / EN598

2) Inspection and test standards:
API 598, DIN3230, BS5146

3) F-to-F:
A) Wafer and lug: API609, DIN3202 K2
B) Flange: ISO 5752

4) End flange dimension:
ASME B16.5 (for NPS<24"), ASME B16.47 series B,
API605, ASME B16.47 series A, MSS SP-44 (for NPS>24"), or BSEN 1092

5) Top flange: ISO5211

6) Connecting: Wafer, Lug, Flange, Weld

7) Size: 1-1/2" - 40", DN40 - DN1000

8) Pressure: Class125 - Class300, PN6 - PN40

9) Temperature: -20° C - 200° C

10) Body: Cast iron / ductile iron / WCB / 304 / 316

11) Disc: Ductile iron / WCB / 304 / 316 / CF8 / CF8M

12) Stem: 13%Cr / 316 / 304 / SS17-4pH

13) Seat: NBR / EPDM / PTFE / R-PTFE / PPL/Stainless Steel

14) Operation: Lever, worm gear, pneumatic, electric, hydraulic or pneumatic-hydraulic actuator

15) Property: Longer service life and zero leakage

16) Widely used in many industries such as:Water treatment, foodstuff, beverage, pharmaceutics, desalination, steelmaking, chemical machinery industries, pulp and paper manufacturing processing



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