Lever Ball Float Steam Trap SFT70

  • The body and bonnet are made of cast steel/forged steel.
  • All internal parts are made of stainless steel, and the wear allowance has been fully considered in the design of movable parts, which improves the service life of the trap.

Lever Ball Float Steam Trap SFT70

Description

Working Principle

Based on the differential density of steam and liquid.

Features
  • Valve body and bonnet are made of cast steel, forged steel.
  • All internal parts are made of stainless steel, which improves the service life of the steam trap.
  • Special flow channel design to achieve zero water hammer.
  • Adopting double balanced valve seat, with an ultra long service life.
  • Built-in air exhaust valve to prevent steam lock.
  • Built-in filter makes the steam trap work in a clean environment.
  • Back pressure rate is as high as 95%.
  • Drain plug is designed at the bottom of the steam trap to ensure that the internal water will be drained, to prevent floating ball from freezing damage in cold weather.

 

Technical Standard
  • GB/T12250-2005 Steam Trap Terminology Marking Structure Length
  • GB/T22654-2008 Technical Conditions for Steam Traps
  • GB/T12251-2005 Test Method for Steam Traps
  • ISO 6948 Automatic steam traps

Production and performance characteristic tests

Technical Parameters
Nominal pressurePN40
Max. allowable pressure (Shell)3.92MPa/200℃
Max. allowable temperature (Shell)450℃/1.66MPa
Factory steam action test>3 times/1.6MPa
Max. operating pressure3.2MPa
Max. operating temperature350℃
Factory cold test pressure6.0MPa
Air test2.0MPa

Bonnet: WCB
Body: WCB
Seat: 420
Disc: 420
Other internal parts: 304

SFT70 Displacement Curve

Lever Ball Float Steam Trap SFT70 Structure Diagram

unit (mm)

ModelSizeLHH1WWeight
SFT70DN5038034513538553Kg
SFT70DN6538034513538554Kg
SFT70DN8038034513538556Kg

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