You Are Here: Home

Industries

Municipal Utilities

District Heating & City Gas Fully Welded Ball Valve

District Heating & City Gas Fully Welded Ball Valve

    The YFL district heating & city gas fully welded ball valve has body fully welded by pipe materials, with two welding seams but without bolts and nuts to prevent potential leakage of medium.

    The YFL fully welded body ball valve for district heating & city gas is widely used in district heating and city gas system, in the pipelines of heating equipments, cross channels of heating pipes, heat exchange station, long distance operation station, coal gas pipelines, truck and branch of supply lines.

Inquiry Now
  • Features
  • Specification

  • The YFL district heating & city gas fully welded ball valve has fully welded body in materials of pipe materials such as ST37.8, P265GH, P235GH etc.
  • The YFL large size district heating & city gas fully welded ball valve has full bore and reduced bore design;
  • Floating and spring loaded seat;
  • Reliable sealing under low pressure;
  • Double piston effect and bidirectional seal;
  • Bubble tight excellent sealing with PTFE+C seats;
  • O-type ring and PTFE+20%C or Flexible graphite as stem seal;
  • Floating ball for DN 15-DN 200;
  • Trunnion ball for DN 200 and above;
  • Low torque value and easy operation;
  • Body materials same as pipe materials;
  • Underground installation with gas exhaust;
  • Fire safe, anti-static and anti-blowout stem design;
  • Maintenance-free, no adjustment or lubrication with no running cost.

ST37.8 District heating ball valveFlanged City Gas Fully welded ball valvesP265GH District heating fully welded ball valves

Product range:

  • Size: DN15DN1400
  • Pressure rating: PN10 PN16 PN25 PN40
  • End connection: RF RTJ BW
  • Ball materials: F304 F316 etc.
  • Body materials: ST37.8  P235GH  P265GH etc.
  • Seat materials: PTFE+20%C Nylon Peek etc.
  • Operation: Bare stem Wrench gear electric pneumatic etc.
  • Medium: District heating hot water natural gas coal gas liquefied gas steam etc.

Technical standards:

  • Design: API6D
  • Face to Face: DIN3202
  • BW ends:  EN12627
  • Flanged ends: EN1092-1
  • Fireproof test: API 607 API 6FA
  • Test and inspection: API 598 API 6D
  • Pressure and temperature rating: ASME B16.34