Pentair Powder Butterfly Valves F250P/F251P Ski-Jump

Pentair Powder Butterfly Valves F250P/F251P Ski-Jump are used in powder conveying/transport applications. Our comprehensive valve line features both manual and pneumatic drive options, including lockable handles and vertical actuators.

Offering a comprehensive range of butterfly valves for a wide range of applications on powder conveying systems for the food, dairy, pharmaceutical, and beverage industries. The F250P/F251P Ski-Jump Valve features advanced butterfly valve seat technology based on many years development while working closely with powder handling specialists. As a result the valve provides optimized performance in this harsh abrasive environment.

Product Description

The F250P/F251P Ski-Jump Valves are available in a number of executions, including wafer flanges, butt weld, RJT, clamp, and other end connections. The F250P/F251P Ski-Jump Valve is also available in a USDA compliant variation that meets the most stringent requirements for the U.S. dairy market. Pentair offers a variety of options that allow monitoring and control of the valves through a PLC control system via the Easymind control unit both standard and an IEC Ex version is available for Zone 22 installations.


Innovative sealing solution

  • Low wear through optimized material selection
  • Unique seat stem bush technology to reduce torque and maximize seat life
  • Powder tight shut-off
  • Highest flow rates
  • Low restriction

Top quality

  • Bodies machined from solid bar stock.
  • FDA compliant elastomers
Long life

  • Low wear
  • High cycle life (up to 3 x that of standard butterfly valves)
  • Deflection zone (Ski-Jump) minimizes direct impingement of high velocity product particles on the sealing surfaces.


  • Simple, fast maintenance
  • No special tools needed


  • Quarter turn operation.
  • Optional end connections.
  • One-piece disc and stem assembly.
  • Fully machined 316L/304L stainless steel body.
  • Bi-directional capability.
  • Equal percentage characteristics.
  • High Cv
  • Slim profile disc.
  • Integral valve position indicator.
  • High grade seat materials for optimised life.
  • Ski-jump feature for optimised seat life.
  • Combination dual or multi position handle assembly.
  • High impact reinforced polymer handle with a stainless steel drive (full stainless steel option available).
  • Integral padlocking as standard on manual valves.


  • Pentair F257 (Standard)
  • F783E IEC Ex (Zone 22) certified control top (Optional)
  • Pentair Industrial Rack and Pinion actuators (Optional)
  • Manual handle (Optional)
  • Travel stops (Optional)
  • Positioners (Optional)

Technical Specifications


Product contact area
1.4404 (AISI306L) Standard
1.4307 (AISI 304L) Min. grade

Operating temperatures

For Seals
90°C (194°F) continuous


Product contact area Ra ≤ 0.8 μm (32 μin.)
Non product contact Ra ≤ 1.6 μm (64 μin.)


F251 – Metric: DN 100, DN 125 DN 150
F250 – Inch OD: DN 4.0″, DN 5.0″, DN 6.0″


Wafer flanges (Pentair custom)
Clamp – ISO 2852
Thread – BS 4825
Butt weld – ISO 2037


USDA (Special Configuration)


Pentair Keystone Powder Butterfly Valves F250P-F251P Ski-Jump Flow Direction

Pentair Keystone Powder Butterfly Valves F250P/F251P Ski-Jump -1

Powder Valve with rack and pinion pneumatic actuator and positioner fitted