Eccentric soft sealing flange butterfly valve
Pressure Rating: PN10, PN16, CL150, JIS 5K/10K
Material: SS304, SS316,Ductile Iron/WCB
Design Standard: EN 593, MSS SP67, API 609, BS5155
Inspection Standard: API 598, ISO 5208, EN 12266
Application medium: Water, Oil and gas
Application Temperature: -10 °C to 150°C
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The structural feature of the double eccentric butterfly valve is that the shaft center of the valve stem deviates from the center of the butterfly plate and the center of the body. The double eccentric effect enables the butterfly plate to be released from the valve seat immediately after the valve is opened, which greatly eliminates unnecessary excessive extrusion and scratching of the butterfly plate and the valve seat, reduces the opening resistance, reduces wear and improves The life of the valve seat is improved. The scraping is greatly reduced, and at the same time, the double eccentric butterfly valve can also use a metal seat, which improves the application of the butterfly valve in the high temperature field.
Design and Manufacture Conform to EN 593, API609, JIS
Flange dimensions Conform to EN 1092-2 PN10, PN16, JIS5K, JIS10K,ANSI B16.1,DIN2501,BS4504
Face to Face dimensions Conform to EN558 series
Top Flange dimensions Conform to ISO5211
Testing Conform to API598、EN12266-1
Double eccentric butterfly valve Standard Test :
Body Test: 1.5 times the working pressure with water. This test is performed after valve assembly and with disc in half position open, it is called as a body hydro test.
Seat Test: 1.1 times the working pressure with water.
Special Test: On request, any other test can be carried out according to special instruction by client.
Double eccentric butterfly valve features:
1.Protection of gearbox IP 68-8 (submersion up to 8 m of water) and actuator IP 68 (submersion up to 8 m of water, during 96 hours and 10operations)
With position indicator.
Clockwise Close (CC).
For installation above ground and in non-flooded chambers.
Designed and tested to an endurance level of 2500 cycles minimum, inaccordance with EN 1074-1 and 2.
2.Reduces resilient seal’s wear and tear ensuring detachment from the body seat ring the moment the valve begins to open.
reduces pressure loss in fully open position by the disc
parking in a zone of reduced flow.
lower torque requirement to rotate the disc leads to less
wear and longer life of the gasket and other elements.
Project Name: Pakistan Sewage Treatment Plant Project
Customer name: a customer in Pakistan
Products to Buy: Flanged Butterfly Valves and Gate Valves
Customer demand: the use of sewage treatment plant projects
This case is an old customer from Pakistan. Because he has purchased valve products from WESDOM many times, he has very high trust and evaluation on WESDOM. He needs a lot of butterfly valves and gate valve products in the sewage treatment plant project which he is responsible for. They sent the requirements to the businessman of WESDOM's international trade department without hesitation. Of course, WESDOM still returns this old customer in Pakistan with high-quality products and preferential prices;
After that, the customer also sent us the installation pictures of the WESDOM product in the working condition project, and feedback that the quality is still very good, and will maintain a long-term cooperative relationship with WESDOM;
potable water supply pipelines and treatment plants.
transportation of filtered and recycled water.
irrigation distribution networks.
water-pumping stations and hydroelectric plants.
nuclear industry, fire safety and storage facilities.
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