Worm Gear Soft Seal Flange Butterfly Valve

• Media: Water
• Driving Mode: Worm Gear
• Connection Form: Flange
• Structure: Centre Sealing
• Seal Form: Force Sealed
• Valve Stem: Normal
• Work Pressure: Low Pressure (Pn<1.6mpa)
• Working Temperature: Normal Temperature (-40°C<T<120°C)
• Material of Seal Surface: Soft Sealed
• Application: Water Industrial Usage
• Seat: EPDM
• Disc: DI/SS304
• Coating: Epoxy Resin
• Presurre Rate: PN16/10
• Transport Package: Bubble Bags & Wooden Case
• Trademark: Walter
• Origin: Suzhou Jiangsu
• HS Code: 8481804090
• Production Capacity: 10000sets/Month

Product Description

Product standard
Standard of design and manufacture:GB/T12238  BS5155  API609
Flange connection standard:GB/T17241.6  EN1092-2  
Top flange standard:ISO5211
Structural length standard:GB/T12221,BS EN558
Test standard:GB/T13927  BS EN12266-1  API598
technical parameter
inside nominal diameter : DN50 ~ DN600
Nominal pressure : PN16
working temperature : -5ºC--85ºC
Pressure  Testing :
-Shell : PN*1.5
-Seal : PN*1.1
Applicable medium : water

1- Body: Ductile Iron GGG40/50 or Cast Iron GG25 or CF8/CF8M or WCB
2- Spindle: SS420/SS431/SS416
3- Disc: Ductile Iron, Cast Iron. SS304 (CF8) Stainless steel
4- Seat: EPDM or PTFE
5- Pin: Stainless Steel
6- Epoxy Resin coating internal & external, thickness above 250 micron
7- Connection: Wafer type, lug type, flange type
8- Work pressure: PN10/16; Size Range: 2" to 72 "
9- Design Standard: DIN, EN558-1, API609; Top flange: ISO 5211;
10- Operate: Handwheel or Worm Gea