Piston Operated Design

The VELAN® SPF Series steam trap is used for high capacity applications such as drip, process and heating, and economically combines steam trap and check valve (with optional strainer and blow-off valve) in a small profile with a convenient 4-bolt cover for easy maintenance.

Pressure Ranges

  • 10-200 psig
  • 10-350 psig
  • 10-600 psig
  • 10-1500 psig

Size Ranges

  • 1"
  • 1 1/2"
  • 2"
  • Forged A105 carbon steel or F22 chrome moly steel body and cover.
  • Maximum Design condition: ANSI/ASME class 900
  • Pressure assisted fail-open design.
  • WILL NOT PLUG due to copper and iron oxides in the system. Condensate flashes on the discharge side of the orifice.
  • Discharges hot condensate in a modulating fashion at approximately 18ºF (10ºC) below saturation temperature throughout the operating range. One internal element for all pressure ranges an external temperature controller can adjust the discharge temperature of the trap standard.
  • Unaffected by water hammer or superheat.
  • Self draining - WILL NOT FREEZE when installed in gravity draining position.
  • Automatically vents air and non-condensable gases and has a high (7:1) cold water capacity for rapid start-up.
  • Operates with ZERO STEAM LOSS throughout its operating range saving steam and money during the life of the trap.
  • Can be installed in any position.
  • Integral check valve design.
  • The advanced cage unit design in Velan steam traps combines a bimetal element, hardened Rc 58 min. ball valve and STELLITE6® hardfaced seat area all in one factory-tested unit.