Valve Spindle Extensions

SUREFLOW Valve Spindle Extensions facilitate the remote operating of Gate Valves and are available in two configurations:

  • AS Cast Ductile Iron Set lengths
  • Fabricated to customer specified lengths
SUREFLOW Valve Spindle Extensions


  • Compatible for use with Dn80 to Dn600 gate valves
  • Compatible for use with Dn750 to Dn1000 gate valves with a minimum gearbox ratio of 2:1
  • Can safely withstand torques up to 3000Nm, 25% greater than the test torque of Dn600 gate valves
  • Bitumen paint coating
  • Fabricated version:
    • Ductile Iron spindle cap and key for strength and long life operation
    • Shaft is keyed and pinned to cap to avoid the need for welding, which is a common cause of failure
    • Solid 32M square, grade 1045, alloy steel shaft provides strength and long life in aggressive conditions