Series 81W
Concentric Wafer Type Butterfly Valve
This concentric wafer butterfly valve offers a wide size range from 1-1/2" to 84" with PN10/16 and Class 125/150 ratings, making it suitable for diverse industrial systems. Available in cast iron, ductile iron, CF8M, or WCB with multiple seat and disc material options, it ensures reliable sealing and long service life. ISO 5752 face-to-face dimensions, ISO 5211 actuator mounting, and universal flange compatibility simplify installation and automation. Ideal for water, seawater, air, oil, gas, and more, and backed by ISO 9001 and PED certification.
Specification
Size Range: 1-1/2"- 84" (DN40 ~ DN2100)
Pressure Rating: PN10/16, CLASS 125/150
Body Material: Cast Iron, Ductile Iron, CF8M or WCB
Seat Material: EPDM, NBR, VITON, or PTFE
Disc Material: Ductile Iron, Stainless Steel, Alu-Bronze
Pressure Rating: PN10/16, CLASS 125/150
Body Material: Cast Iron, Ductile Iron, CF8M or WCB
Seat Material: EPDM, NBR, VITON, or PTFE
Disc Material: Ductile Iron, Stainless Steel, Alu-Bronze
Features
Face-to-face dimension complied with ISO 5752 short pattern
Actuator mounting pad flange complied with ISO 5211
Flange requirement: ANSI 125/150, BS Table E, JIS 10K, DIN PN10, DIN PN16
All wafers have locating holes for ease of installation.
Quality Assurance to ISO 9001, PED 97/23/EC
Rating: 1-1/2"~12": 228 PSI (16 BAR)
14" ~ 24": 150 PSI (10 BAR)
Options: Lever, Gear, Pneumatic, Electric Operated
Service Application: Water, Seawater, Air, Oil, Powder, Gas and etc.
Actuator mounting pad flange complied with ISO 5211
Flange requirement: ANSI 125/150, BS Table E, JIS 10K, DIN PN10, DIN PN16
All wafers have locating holes for ease of installation.
Quality Assurance to ISO 9001, PED 97/23/EC
Rating: 1-1/2"~12": 228 PSI (16 BAR)
14" ~ 24": 150 PSI (10 BAR)
Options: Lever, Gear, Pneumatic, Electric Operated
Service Application: Water, Seawater, Air, Oil, Powder, Gas and etc.
Safety/Quality Approvals
ISO 9001; PED 2014/68/EU
File download
Series 81W Concentric Wafer Type Butterfly Valve (PDF) Series 81W(E)_Ecoline Concentric Wafer Type Butterfly -81W(E)-PN10 (PDF) Series 81W(E)_Ecoline Concentric Wafer Type Butterfly -81W(E)-PN16 (PDF) Series 81W(E)_Ecoline Concentric Wafer Type Butterfly -81W(E)-CL125/CL150 (PDF) Series 81W(E)_Ecoline Concentric Wafer Type Butterfly -81W(E)-JIS10K (PDF)