Basic Info.
Work Pressure
High Pressure (10.0mpa< Pn <80.0mpa)
Working Temperature
Normal Temperature (-40°C<T<120°C)
Material of Seal Surface
Soft Sealed
Valve Body
Casting
Application
Industrial Usage, Water Industrial Usage, Household Usage
Face to Face
API609 / En593 / En558
Flange Drilling
DIN2501/Ansib16.10 / En1092
Working Pressure
Pn10 Pn16
Place of Origin
China
Brand Name
Syi
Upper Flange Connection
ISO5211
Test
100% Water Pressure
Name
Worm Gear Operated Lug Butterfly Valve
Transport Package
Standard Export Package or as Per Your Requirement
Specification
DIN/BS/ANSI
Trademark
SYI
Origin
China
HS Code
8481804090
Production Capacity
1000 Sets Per Month
Product Description
SYI Wafer Resilient Seated Butterfly Valve
Description
The disc of the Worm Gear Operated Lug Butterfly Valve is installed in the diameter direction of the pipe. In addition to connecting between two pipes through two sets of ordinary hexagonal bolts, the turbine single-clip butterfly valve can also be installed at the end of a single pipe.
Technical Specifications:
Face to face:API609 / EN593 / EN558
Flange drilling: DIN2501/ANSIB16.10 / EN1092
Working pressure: PN10/PN16
Upper flange connection: ISO5211
Face to face:API609 / EN593 / EN558
Flange drilling: DIN2501/ANSIB16.10 / EN1092
Working pressure: PN10/PN16
Upper flange connection: ISO5211
Main Parts and Material:
| Item | Part Name | Material | Item | Part Name | Material |
| 1 | Body | GG25/GGG40 | 3 | Disc | GGG40/CF8M |
| 2 | Shaft | Stainless Steel | 4 | O-ring | NBR |
Main Dimensions: Unit: mm
| DN | H1 | H2 | L |
| 40 | 139 | 68 | 33 |
| 50 | 161 | 80 | 43 |
| 65 | 175 | 89 | 46 |
| 80 | 181 | 95 | 46 |
| 100 | 200 | 114 | 52 |
| 125 | 213 | 127 | 56 |
| 150 | 226 | 139 | 56 |
| 200 | 260 | 175 | 60 |
| 250 | 292 | 203 | 68 |
| 300 | 337 | 242 | 78 |
| 350 | 368 | 267 | 78 |
| 400 | 400 | 298.6 | 105 |
| 450 | 422 | 318 | 114 |
| 500 | 480 | 355 | 127 |
| 600 | 562 | 444 | 154 |
| 700 | 623.9 | 505.1 | 165 |
| 750 | 646 | 499 | 165 |
| 800 | 672 | 576 | 190 |
For other sizes not mentioned above, please contact us. We have right to change the data without further notice.
In the butterfly valve body cylindrical channel, disc shaped butterfly plate around the axis of rotation, rotation Angle between 0°-90°, can play the role of flow regulation, when the butterfly plate rotation to 90°, the valve to reach the maximum opening. Worm Gear Operated Lug Butterfly Valve is with simple structure, small size, light weight, only by a
few parts. And only need to rotate 90° can quickly open and close, simple operation, and the valve has good fluid control
characteristics.
Package
In the butterfly valve body cylindrical channel, disc shaped butterfly plate around the axis of rotation, rotation Angle between 0°-90°, can play the role of flow regulation, when the butterfly plate rotation to 90°, the valve to reach the maximum opening. Worm Gear Operated Lug Butterfly Valve is with simple structure, small size, light weight, only by a
few parts. And only need to rotate 90° can quickly open and close, simple operation, and the valve has good fluid control
characteristics.
Package
Packing: Usually packed by plywood crates or pallets. Quality Control
SYI Pipeline regards quality as an essential and integral part of our business success. Until now, we are ISO9001:2015 TUV, BSI Kitemarked, SGS, BV, FM certified, and UL, WRAS listed. We are the approved supplier to many worldwide known countries and authorities. Manufacturing "SYI" Brand products has evolved as a mark of quality!
Services SYI manufactures and designs complete series of Valves according to DIN/BS/EN/API/ANSI/AWWA
/ASME/ Russian and other major standards.
-Gate Valves,
-Butterfly Valves,
-Check Valves,
-Y-Strainers
-Air Release Valves
-Globe Valves
-Fire Hydrant
-Butterfly Valves,
-Check Valves,
-Y-Strainers
-Air Release Valves
-Globe Valves
-Fire Hydrant
The Valves supplied by SYI Pipelines are mainly used for adjusting water, steam, oil, gas, and natural
gas in chemical industries, acid, alkali, and salt working pipelines. Sizes from 50-2000mm can meet full requirements from customers.
gas in chemical industries, acid, alkali, and salt working pipelines. Sizes from 50-2000mm can meet full requirements from customers.
Company Profile 
SYI has continually invested in better technology and production facilities. More than 4,000 patterns
are ready. We are capable to finish all the production processes from moulding, shot-blasting, machining, coating to packaging. We have over 100,000 m2 foundry land including:
-10,000 m2 of the pattern, sand mixing, polishing, machining, hydraulic pressure, coating, packaging workshops;
-4,000 m2 of three green sand moulding workshops and one resin sand moulding workshops;
-3,000 m2 of automatic moulding machine line and epoxy coating line
-professional laboratory
-machining shop
-and our own tooling shop
Strict process and operating regulations together with perfect quality assurance system making every production step under control. All the products are subject to tests and inspections including composition analysis, metallographic examination, dimension & surface finish inspection, ring test, tensile test, hardness test, hydrostatic test, lining and coating test to be sure that the products meet the requirements of the standards.
Since 2009, SYI Pipeline has developed from a pipes & fittings seller to a professional project solution provider, including the one stop service and solution from pipes, fittings, couplings & flanged adaptors, valves, fire hydrants, to water meters and accessories. 
SYI products have served 111 countries worldwide up to now!
Most of these customers cooperated with SYI for more than 20 years!
We value long term cooperation relationship mostly!
Welcome to send us an inquiry for more details and price!!!
are ready. We are capable to finish all the production processes from moulding, shot-blasting, machining, coating to packaging. We have over 100,000 m2 foundry land including:
-10,000 m2 of the pattern, sand mixing, polishing, machining, hydraulic pressure, coating, packaging workshops;
-4,000 m2 of three green sand moulding workshops and one resin sand moulding workshops;
-3,000 m2 of automatic moulding machine line and epoxy coating line
-professional laboratory
-machining shop
-and our own tooling shop
Strict process and operating regulations together with perfect quality assurance system making every production step under control. All the products are subject to tests and inspections including composition analysis, metallographic examination, dimension & surface finish inspection, ring test, tensile test, hardness test, hydrostatic test, lining and coating test to be sure that the products meet the requirements of the standards.
Since 2009, SYI Pipeline has developed from a pipes & fittings seller to a professional project solution provider, including the one stop service and solution from pipes, fittings, couplings & flanged adaptors, valves, fire hydrants, to water meters and accessories.
SYI products have served 111 countries worldwide up to now!
Most of these customers cooperated with SYI for more than 20 years!
We value long term cooperation relationship mostly!
Welcome to send us an inquiry for more details and price!!!