|
ZIPSON Standard Stem Design
ZIPSON'S standard stem design for IS O direct mount type valve, 201D, 302F, 305D, 306D, 107S, 207S are all with SS301 disk washer (belleville washer). This smart design will allow the stem to adjust itself, and
increase the lifetime of cycle operator. For high temperature operation, 17-4 material belleville washer are available as required.
2 to 3 pc/set stem packing was
pressed by the nut & disk washer to expand the packing for sealing well. All Zipson's stem were designed for blow-out proof for safety.
The complete stem set were locked by the saddle shape nut
stopper. This will ensure the stem set get tight after thousands of operation.
Options For Stem Seals
Some options are available for critical usage on stem design. One more set of disk washer, PEEK packing protector, PEEK
thrust washer protector are set for prolonging the cycle operation lifetime. For fire safe desgin or high temperature operation, Graphite stem packing will perform very well. Anti-static
device are available when asked.
Floating Ball Valve Seat Design
Floating valve closing function is like cleck valve. The media pressure will support the ball pushing the seat to close. But when the working pressure is
higher than the origin design, the seat may be damaged by the media pressure.
Zipson's seat were designed with seat groove for releasing the pressure and protecting the seats from deforming. This design will reduce the torque when operate the valve as well. |
|
