SFT50 Lever Ball Float Steam Trap

SFT50 Lever Ball Float Steam Trap

Description

Working Principle
  • Based on the differential density of steam and liquid.
Features
  • The valve body and bonnet are made of cast steel.
  • All internal parts are stainless steel to ensure a long service life of the steam trap.
  • Double balanced seat design ensures an extra-long service life.
  • Built-in air vent eliminates air locking.
  • Water seal design prevents live steam leakage.
  • Different capacity curves are selected according to pressure differential.
  • Back pressure rate is as high as over 95%.
  • A drain plug is provided at the bottom of the steam trap to discharge internal accumulated water after shutdown, preventing the float from freezing damage.

 

Technical Standard
  • ISO 6553: Automatic steam traps – Marking
  • ISO 6554: Automatic steam traps -Face-to-face dimensions
  • ISO 6948: Automatic steam traps -Production and performance
    characteristic tests
Technical Parameters
Nominal pressure PN40
Max.allowable pressure(Shell) 3.46MPa/200℃
Max.allowable temperature(Shell) 350℃/2.92MPa
Factory steam action test >3 times/1.6MPa
Max.operating pressure 3.2MPa
Max.operating temperature 350℃
Factory cold test pressure 6.0MPa
Air test 2.0MPa

Bonnet:WCB
Body: WCB
Disc: 420
Other trims:304
Seat: 420

stf50a 1

stf50a 2

unit (mm)

Connection Pressure DN(IN) L H h W KG
T/W PN16/25/40CL150/300 15(1/2″) 320 260 122 335 27.1
20(3/4″) 320 260 122 335 27.2
25(1″) 320 260 122 335 27.3
32(11/4″) 320 260 122 335 27.5
40(11/2″) 320 260 122 335 27.7
50(2″) 320 260 122 335 27.9
F PN16/25/40CL150/300 15(1/2″) 320 260 122 335 29.3
20(3/4″) 320 260 122 335 29.7
25(1″) 320 260 122 335 30.1
32(11/4″) 230(300LB:320) 260 122 335 30.5
40(11/2″) 230 260 122 335 31.1
50(2″) 230(300LB:320) 260 122 335 31.9
65(21/2″) 320 260 122 335 33.2
80(3″) 320 260 122 335 34.8
100(4″) 360 260 122 335 36.7
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