Unibody casting floating type ball valve of 2"-8" CL150-600 API 6D
, 608 desgin
Unibody body, full bore/reduced bore, floating ball, fire-safe
certified to API-607/6FA, anti-blow out stem, cavity relieving
seats, anti-static device, RTFE, Delrin, NYLON&DEVLON seat
inserts. Floating ball valves are designed, constructed and tested
according to the most recent international standards, such as API,
ASME, BS, DIN, etc.
Kelite unibody floating ball valves are including below components,
1. Body
2. Closure / Cap
3. Ball
4. Cavity Relieving Seat
5. Stem
6. Anti-Static Spring and Ball
7. Gland Bushing
8. Gland Flange
9. Combination Lock Stop
10. Stem O-Ring
11. Gland O-Ring
12. Packing
13. Stem Thrust Washer
14. Graphite Gasket
15. PTFE Gasket
16. Gland Screw
17. Stem Washer
18. Stem Bolt
19. Stem Bearing
20. Gland Bearing
21. Snap Ring / Circlip
22. Handle
Kelite unibody and splid body floating ball valves has below design
characteristic,
Floating ball valves present a particular problem with the build up
of static electricity around the ball. All Kelite ball valves have
anti-static devices which provides contact between stem and ball,
and stem and body to eliminate static electricity.
In the event of a fire the valve is required to make a downstream
seal. Even after the disintegration of the RTFE seats, KELITE ball
valves have an excellent metal to metal seal. Special attention has
been paid to the mechanical strength and sealing efficiency of the
central flanged joint in the valve body.
The PTFE gasket packing acts as a primary seal for the unibody ball
valves. The secondary seal has been made out of flexible graphite,
a material with extremely good resistance to fire conditions.
- BLOW-OUT PROOF STEM DESIGN
The combination of stem packingand o-rings guarantee zero emissions
even at a low pressure. The primary seal is made out of flexible
graphite, a material with extremely good resistance to fire
conditions. The anti-blow out stem is inserted from inside the
valve body.
Technical parameters and characteristics:
| Product description | Unit body floating ball valve |
| Model | Floating ball valve |
| Nominal diameter | NPS 1/2～NPS 8 |
| Operating temperature | -46℃～220℃ |
Operating pressure | CLASS 150～CLASS 600 |
| Material | WCB,LCB,CF8,CF8M,etc. |
| Design standard | API 608,ISO 17292,BS 5351 |
| Structural length | ASME B16.10 |
| Connecting end | ASME B16.5,ASME B16.25 |
| Test standard | API 598, API 6D |
| Operation method | Handle, worm, motor-drive unit, pneumatic drive unit |
| Application fields | Water, petroleum and natural gas |
Other remarks 1 | A locking device is provided to prevent misoperation of valve. |
| Other remarks 2 | Valve stem flyout prevention structure design, to prevent accident
due to flyout of valve stem caused by abnormal pressurization in
the chamber |
| Other remarks 3 | Fireproof and antistatic design |
| Other remarks 4 | Full bore of valve convenient for pigging, of small flow resistance
and high flow capacity |
