Features and Advantages
Stem Blow Out Prevention Ring
Prevent stem ejection in accidental
Replaceable Disc Seal
Reduce field maintenance costs.
Live Loading Packing Gland
Standard low emission stem seal with 0-20 PPM live-loading provides predictable and constant packing compression for more than 5000cycles before adjustment or re-packing.
Metal-to-Metal Patented Sealing System
Stellite Alloy HRC 40-60 degree centigrade
Disc Position indication
Stem end provides fool-proof verification of disc location.
Actuator Mounting Plate and Stem Connection conform to ISO5211
Principle Of Operation
The SDF Triple Offset Butterfly Valve provides a bi-directional bubble tight shut-off. This geometry ensures that the disc seal contacts the body seat only at the final shut-off position without rubbing or galling, providing a torque generated resilient seal with sufficient“wedging”to ensure a uniform seal contact.
The triple offset geometry
OFFSET 1 The shaft is offset behind the seat axis to allow complete sealing contact around the entire seat.
OFFSET 2 The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve.
OFFSET 3 The seat cone axis is offset from the shaft centerline to eliminate friction during closing and opening and to achieve uniform compressive sealing around the entire seat.
Contact Name: Pagangpeng
Company Name: Zhejiang Hisun Automation Instrumemt Co, Ltd
Street Address: He Yi Industrial
Zone, Oubei Town
Wenzhou, Zhejiang 325105
Member name: zhejianghisun
Member Since: 07 May 2016
Total Leads: 35 zhejianghisun Import Export Business Leads
Business focus: Power Station Valve, High Temperature Valve, High Pressure Valve, Etc
Verify: Safe Import Export Tips
Product Category: Flange type butterfly valve