Piston valve

Functions – Piston valve

♦ tank or reactor bottom outlet valve
♦ feeding valve : side mounted or upright
♦ sampling or injection valve : at tank bottom or laterally / on a section of piping
♦ walls cleaning by spraying or streaming : installed on reactor dome
♦ In-line stop valve, no dead areas

Operating principle – Piston valve

– Shutter : Right Piston and polished (stellite in option)
– Process/Atmosphere sealing with stuffing box (repackable in service)
– Full bore
– Low pressure drop

Sealing system

♦ Conical metal-to-metal piston seating
♦ Radial soft seating with packing, O’ring, etc.

Operation

Handwheel or crank according to size,handle + return spring (dead man handle),double acting pneumatic actuator,single acting pneumatic actuator (acc. to DN, Class and/or stroke),hydraulic actuator,electric actuator,air cylinder.

Closing device

piston with conical seating, straight piston

• 
  Zoom

Fabrication – Piston valve

• Construction materials: : Carbon Steel (CS), Stainless Steel (SS), Duplex & Super Duplex, Titanium, Zirconium, Uranus® B6, Tantalum, Nickel, Hastelloy®, Monel
• Construction Methods : Fabricated (Welded), Cast

Uses – Piston valve

• Service conditions : High pressure, High temperature, Low temperature, Abrasion, Corrosion, Vacuum
• Types of fluids : Liquids, Liquids with solid particles, gas, Powder and powdery media, High viscosity fluids
• Applications : Fine chemicals, Plastics and polymers, General chemicals, Petrochemicals