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Feature for floating type ball valves
Floating Ball valves covers wide range of application such as Power, Natural Gas pipe line, Petro-chemical, Chemical plant, factory and building construction
- Double “D” stem head design provides mounting of the lever handle always in parallel to the flow passage. This feature prevents the lever handle from being installed in a wrong orientation.
- The lower end of the stem is designed with an integral collar to be blowout-proof.
- An antistatic feature is provided to ensure electrical continuity between ball, stem, and body.
- Facility for mounting a locking device for prevention of accidental valve operation is provided.
- Plant fires are a serious concern for soft-seated ball valves because of possible fluid leakage by deterioration of resilient sealing materials.
- The surface of stem and stuffing box, and interface clearance of stem-to-gland, stem-to-body and gland-to-stuffing box are precisely controlled on machining and assembly for low emission service. A Belleville spring washer is employed for live loading on gland bolts, to minimize need of retightening the bolts for low emission service.
- Some line fluid is usually left trapped inside the ball-body cavity. This fluid can expand under the influence of high ambient or line temperature. An excessive cavity pressure rise may sometimes damage the valve seats or balls, unless the valve has an adequate cavity pressure relief mechanism. Trunnion mounted ball valves generally provide perfect protection from this problem. Please contact KITZ Corporation for details.
In case of floating ball valves, however, their rather simple seating principle requires some special protection from excessive cavity pressure rise when highly volatile liquid in service is subject to frequent and large temperature variation, while the valve is not frequently operated. KITZ 150/300 SCTDZ/UTDZ(M) and 150/300 SCTAZ/UTAZ(M) Series ball valves offer self-relieving of excessive cavity pressure as a standard feature engineered in HYPATITE® PTFE ball seats.
About Ball valve
Ball valves, one of KITZ’s main products, offer a lineup of valves compatible with a variety of materials. We also produce metal seats that support special lines and can handle operating temperatures up to 500°C, as well as Λ (lambda) port valves that can be closed and controlled to accommodate slurry fluids. We apply standards such as ANSI/ASME and API,MSS,ISO,DIN,JIS to supply worldwide.
Ball valve applications
The use of ball valves is extremely wide, and there is a tendency for demand to increase even further in the future.
- Electric power industry and natural gas pipelines
- Petroleum refining and petrochemical plants
- General chemicals, machinery plant equipment and facilities
- Building Equipment
- Irrigation and pollution prevention
- Water and sewerage and gas supply for general households
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TAN LONG TECHNOLOGY SOLUTIONS CO., LTD
🤙 090909 1789
🏬 146/18 Nguyen Huu Tho St., Phuoc Kien Ward, Nha Be Dist. HCMC, Viet Nam
