Butterfly Valves
Detail Specification for Wafer & Lug Butterfly Valves
The valves is ideal for throttling or shutting off the flow of corrosive or incorrosive gases, liquids, semi-liquids and solid powder, and can
be installed in pipelines or on vessels in the industries of petroleum processing, chemicals food, medicine, textile, paper making,
hydroelectricity engineering, ship building, water supply and sewage, metallurgy, energy engineering as well as light industry etc.
- Small in size and light in weight. Easy installation and maintenance. It can be mounted wherever needed.
- Simple and compact construction, quick 90 degrees on-off operation. Minimized operating torque, energy saving.
- Long service life, Standing the test of tens of thousands opening/closing operations.
- Bubbles-tight sealing with no leakage under the pressure test
- Wide selection of materials, applicable for various medium.
| Item NO. |
Name of Part |
Performance Feature |
| 01 |
Check Ring |
Provides prevention of blow out of shaft |
| 02 |
O-ring |
Provides prevention of outside dust |
| 03 |
Body |
Precision Cast Iron Body or Ductile Iron Body, According with various connection standards |
| 04 |
Bush |
Furnishes stem support for positive stem alignment and actuator support |
| 05 |
Seat |
Bonded to body or inserted |
| 06 |
Disc |
Provides double-tight shut-off and assures minimum torque and longer seat life |
| 07 |
Stem |
Ensures dependability and positive disc positioning, blow out proof design stem |
| 08 |
Splinted (Tapered pins) |
Ensures positive shaft to disc connection, convenient for field replaceable, furthermore, Using of splint reduces possibility
of leakage through disc and shaft |
Technical Data
| Nominal Diameter |
50(2")-2000(80") |
50(2")--1000(40") |
40(1 1/2")-2000(80") |
| Nominal Pressure |
1.0 Mpa |
1.6Mpa |
0.6Mpa |
| Test Pressure |
Shell |
1.5Mpa |
2.4Mpa |
0.9Mpa |
| Sealing |
1.1Mpa |
1.76Mpa |
0.66Mpa |
| Working Temperature |
-15--------- +150 |
| Suitable Mediums |
Fresh/Sewage/Sea Water, Gas, Vapor, Food, Medicine, Oils, Acids, Alkalis Salt, etc |
|
