Three-piece design


  AB44 - Standard series

            AFB44 - Fire-safe series
This 3-piece Ball Valve is the most easily on-line maintainable in its class. By removing three body connector bolts and loosening the fourth, the body can be swung away using the fourth bolt as the fulcrum, to carry out any installation or maintenance operation on the valve, thus reducing downtime. This valve can be offered in a wide variety of body and seat combinations.
This 3-piece fire-safe design Ball Valve features a secondary metal seat which renders the valve fire-safe. When the seat is totally sublimated in a fire, the ball moves and rests against the lip, forming a metal-to-metal seat, thus ensuring leak-tightness.
 Dimensional Details
  Screwed/Socket-weld end (in mm, unless specified)
                     Dimensional Details
                            Flanged end (in mm, unless specified)

kg/cm (psl)
5.6 (80)
31.5 (450)
79.0 (1125)
154.0 (80)

Max. cold working

69kg/cm2 for screwed/socket-weld end valves with PTFE seat 103kg/cm2for screwed/socket-weld end valves with special-filled PTFE seat
As per flange rating for flanged valves
  Test pressures

Valve design

BS 5159 for AB44 Series
BS 5351 for AFB44 Series
  Shell Scr./Socket weld (air)
Flanged 150 (hydrostatic)
Flanged 300 (hydrostatic)
Flanged 600 (hydrostatic)
Fire Test (for AFB44)

API 607 4th edition

Testing API 598 for flanged valves   Seat All valves (air)
Face-to-face dimensions ASME B16.10 for flanged valves and AIL Standard for screwed/socket-weld end valves    
Pressure testing as per BS 6755 available on request.
Shell hydrostatic test can be done for screwed and socket-weld end valves on request.
Shell hydrostatic test can be done as per Class 800 rating for both versions on request.