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Gear Type Fully Welded Ball Valve

Gear Type Fully Welded Ball Valve

The fully-welded ball valve adopts forged material, welded body, instead of bolts and nuts, to aviod any potential leakage from body The forged body with regular structure and even thickness can avoid shrinkage cavities, pin holes, cracks, sand holes and other defects occurring to casting body valves.

Details

Dimensions: Full Diameter & Standard Diameter DN50 (2”) ~ DN 1,400 (56”)

Pressure Rating: ANSI Class 150 ~2,500, PN 16 ~ 420

Working temperature: -29°C(-20°F) ~ +200°C(392°F)

Adaptable medium: petroleum/gasoline, liquefied natural gas/liquefied petroleum gas, petrochemical, steel plant, heating pipeline, etc.

Operation method: handle, gear (vertical/horizontal), electric


Standard features:

 Butt welding & flange end for solid structure

 Mirror polishes the entire stainless steel sphere

 Preloaded seat cushion springs ensure low temperature leak tightness and reduce torque on valve operation

 According to international standards against burst valve stem

 Stem dry bearings and metal with PTEF coating for automatic lubrication without additional lubricant

 Floating or fixed ball valve


Select features: (as required)

          Self-rescue valve seat

          Vertical device and extended stem

          Special ports and paths

          Antistatic device

          Stem can handle grease urgently

          Seat lubricant and emergency sealant equipment

          Metal to metal seat seal

          Double cut and discharge

          Double piston action seat

          Safety fire protection design with graphite gasket

          Seat seal plastic polymer

          In-body cavity safety valve

          Ball and stem electroless nickel plating


Material:

          Body: Carbon Steel ST37, A106-B, STPG 370, A105, WCB, LCB, CF8, CF8M, CF3, CF3M, A105, LF2, F304, F316, F304L, F316L, WC6, WC9, C5, C12, LCA, LCB, LCC, LC1, LF2/LF1, EN12516 1.0619, 1.4408, 1.44011. 4301, 1.4304, 1.4404, 1.4021, 1.4571, 1.4541, 1.4462 etc.

          Sphere: stainless steel 304 or 316 grade

          Seat: Metal seats with polymer seals, PTFE, RTFE, Viton, Nylon, Peek, etc.


Application:
 
City Gas:gas outlet pipe,supply pipe for main line and all brach lines etc.
District heat supply:Outlet pipe,main line and brach line for large heat supply equipment.
Heat exchanger:on-off of pipe and all loops.
Steel plant:various fluid pipes,discharging pipe for exaust gas,supply pipe for gas,thermal power and fuel.
Various industrial equipment:various heat treatment pipes,pipe for all kinds of industrial gas and thermal power.
 
Features:

  1. Outer leakage won't occur for welded ball valve.

Valve seat consists of teflon sealing ring strengthened by carbon fiber and belleville spring,so it can adjust well to change on pressure and temperature without any leakage risk within marked pressure and temperature range.

  1. The whole process of sphere is tracked and detected with advanced computer and detector,so the process precision is very high,operation is very simple and easy,no bad interference.

  2. Body material is same as material of pipe,when vehicles pass through the groud or even earthquake happens,the stress is evenly distributed without any deformation risk.

  3. Sealing ring is made of PTFE containling 20% carbon,Ensure no leakage will happen.

  4. Buried ground fully welded ball valve can be installed in small and shallow well being set on ground rather than large valve well,so the construction cost and project time can be saved a lot.

  5. The length of valve body and height of stem can be designed in accordance with the requirement of project.

  6. The service life can be more than 15 years when used at normal operational and using conditions.




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