Fully welded ball valve offers the advantage of a compact envelope, which allows for increased strength and significant reduction in weight. Furthermore, since the body is made by welding forged parts, there are fewer potential leak paths when compared to side-entry and top-entry ball valves.
Hongar supplies fully welded ball valve in a wide range of materials and configurations to meet any specific need of the application and customer's requirements. Many optional features are available for seat designs, seat and stem seals, and end connections.
Fully Welded Ball Valves comply with ISO 14313 requirements and with all the relevant Industry standards and codes (ANSI, API, ASME, BS, ISO, NACE, PED and others). The weldings of the body are perfomed and qualified according to ASME Section IX; non-destructive examinations (NDE) are performed in compliance with ASME VIII Division 1 and 2.
Hongar stresses its willingness to produce engineered fully welded ball valves; therefore, it welcomes requests for special size, class and design requirements.
Size Range : DN10-DN1200
Pressure: PN16-PN40
Body Materials: WCB,stainless steel
Ball Materials: SS304
Seal Materials: PTFE
End connection:Butt weld or Flanged(KS, EN,GOST)
Bore：Full bore, Reduced bore
Working temperature:-60~+80 ℃
Operator：Lever, Gear. Electric, Pneumatic, Hydraulicactuator
Structure type:Trunnion Mounted Ball Valve
Standard:GB/DIN/ANSI/JIS/BS
Application:Water, Oil, Air
Fully welded body, Seat tightness class "A".
Main Standard: API 6D/ISO 14313
Size Range: Class 150: 2"-60", Class 300: 2"-48", Class 600: 2"-36"
Class 900: 2"-24", Class 1500: 2"-20", Class 2500: 2"-12"
Products Main Features
◆ Fully welded body construction
◆ Forged body construction
◆ Trunnion mounted ball
◆ Soft or Metal seated
◆ Sealing options in self relief or double piston effect , or a combination of both (DIB2)
◆ Extended stem for underground burried service
◆ Anti-blowout stem design
◆ All welding processes for the body are suited to the materials of construction and are qualified and performed according to ASME Section IX
◆ Non-destructive tests (NDTS) are performed per ASME VIII Division 1, App. 12 on the circumferential weld joints of the body
Products Advantages
►Fully Welded Ball Valve (welded body ball valve) gives it maximum strength at minimum weight as well as maximum resistance both to pipeline pressures and stresses. The compact, spherical design also eliminates body flanges, thus reducing overall size and leak paths.
►Fully Welded Ball Valve (welded body ball valve) are ideal for buried service applications to decrease potential leak points and reduce the potential of fugitive emissions from flanges.
►As one of the reliable Fully Welded Body Ball Valve manufacturers in China, Hongar supplies welded body ball valves which are used mainly in Gas transmission and distribution pipeline (Mid-stream), typical for underground and buried installation.
►Various testing procedures are used to confirm the tightness of the entire ball valve. Furthermore, weld seams undergo visual, magnet particle, ultrasonic and – if requested – radiographic testing.
►Fully welded ball valve (welded body ball valve) is trunnion mounted, high-strength forged stems are located in PTFE impregnated stainless steels bearings for smooth operation. Trunnion mounted stems absorb the thrust from line pressure, preventing excess friction between the ball and seats, so even at full rated working pressure, operating torque stays low.
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