Butterfly valve, include Lug type, wafer type, flange type and Triple eccentric type products been produced in WINDUS enterprise, the Lug and Wafer type Butterfly valves are designed for shutoff and isolation service of liquids and gases, thin profile, on center disc provides high flow capacity. Body wall thickness confirms to the requirement of ANSI class 125 and AWWA standards.
Our 3 Inch butterfly valve series is the newly developed long life and energy saving products, the sealing is metal to metal or seal ring to metal, stainless steel plate and composite graphite to metal. Suitable for working condition of high temperature and high pressure. It is widely used in petroleum, natural gas, piped gas and medicine food industry.
It is also a fire safe butterfly valve with the advantages of simple structure, reliable sealing, easy opening, long life and easy maintenance.
1. DESIGN AND MANUFACTURE
API 609/ ASME B16.34
2. FACE TO FACE DIMENSIONS
3. FLANGE ENDS DIMENSIONS
NPS 26”& ABOVE
4. BW ENDS
5. SOCKET WELDING ENDS
6. THREADED ENDS (NPT)
7. FIRE SAFE DESIGN
API 607 / API 6FA
8. INSPECTION & TEST DESIGN
API 598 / API 6D / ISO5208
1. NORMAL DIAMETER
2. NORMAL PRESSURE
3. SUITABLE MEDIUM
CORROSIVE ENVIRONMENT, OIL, GAS, WATER
4. SUITABLE TEMPERATURE
-29℃ - 180℃
5. PORT TYPE
6. CONNECTION ENDS
RF / NPT / BW / SW
7. BODY / COVER MATERIAL
STAINLESS STEEL / CAST STEEL / CAST IRON
8. DISC MATERIAL:
STAINLESS STEEL / DUPLEX STEEL / CAST IRON / BRONZE
9. SEAT MATERIAL
EPDM / NBR / VITON / PTFE / NYLON
10. STEM MATERIAL
STAINLESS STEEL / DUPLEX STEEL / CAST STEEL
LEVER, GEAR, ELECTRIC, PNEWMATIC
1. The pneumatic actuator butterfly valve adopts the grooved clamp joint and the corresponding pipe fitting to install the pipeline. There is no need for welding, no need for second galvanizing and second installation during construction.
2. Light weight, small number of bolts and easy to place.
3. Reliable, scientific and reasonable agency plan, unique c-type rubber sealing ring and triple sealing ensure the reliability of joint sealing.
4. It is a stainless steel butterfly valve that uses the trench clamp and the corresponding pipe fitting for construction. Only mechanical assembly is required, no welding is required, and there is no open fire.
Cast iron/Gray iron
GB: HT150 / HT200 / HT250 / etc;
nodular cast iron
GB: QT400-18 / QT450-15 / QT500-7 / etc;
Low carbon steel / Middle carbon steel / G35 / G45 /
WCB / WCA / WCC / ISO 340-550 / etc;
Stainless steel alloy
GB: 1Cr17Mn6Ni5N / Y1Cr18Ni9 / 0Cr18Ni9 / 0Cr17Ni12Mo2 / 00Cr17Ni14Mo2
GB: 5A02 / 6061(LD30) / 6063(LD31) / etc;
We handle many other type of materials.
Double acting working principle:
When air pressure from the port (2) into two piston cylinder between central cavity, make the two
ends to the cylinder piston separation direction, both end air cavity air through the port (4) discharge,and at the same time, make the two piston rack synchronous drive the output shaft (gear) counter-clockwise. And air pressure from the port (4) into the cylinder ends air cavity, two pistons to cylinder intermediate direction, and the middle gas cavity air through the port (2) discharge, and at the same time, make the two piston rack synchronous drive the output shaft (gear) clockwise.
? (if the piston relative inverse direction installation, output shaft that into reverse rotation)