Three-piece design

A44 - Standard series   AF44 - 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)

Max. cold working pressure

69kg/cm2for screwed/socket-weld end valves with PTFE seat 103kg/cm2 for screwed/socket-weld end valves with special-filled PTFE seat As per flange rating for flanged v&lves
  Test pressures
kg/cm (psl)
5.6 (80)
31.5 (450)
79.0 (1125)
154.0 (2225)

Valve design

BS 5159 for A44 Series BS 5351 for AF44 Series   Shell Screwed/Socket weld (air)
Flanged 150 (hydrostatic)
Flanged 300 (hydrostatic)
Flanged 600 (hydrostatic)
Fire Test (for AF44)

API 607 4th edition

Testing API 598 for flanged valves   Seat All valves (air)
5.6 (80)
Face-to-face dimensions
ASME B16.10 for flanged valves and AIL Standard for screwed/ socket-weld end valves