Piston Valve Guichon
No dead space, particularly suitable for high viscosity and polymerising fluids.
DN 15 to DN 250
1/2" to 10"
PN 10 to PN 420 acc. to size
150 to 2500 Lbs acc. to DN
Functions
DN 15 to DN 250
1/2" to 10"
PN 10 to PN 420 acc. to size
150 to 2500 Lbs acc. to DN
Functions
- 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
Fabrication
- 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
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
Features
- DN 15 to DN 250
- 1/2" to 10"
- PN 10 to PN 420 acc. to size
- 150 to 2500 Lbs acc. to DN
- 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
Options
- adaptation to any type of connection
- contoured piston to match the tank or line profile (no dead area)
- crust breaking function
- hard faced seating surfaces according to media and/or pressure
- vacuum tight
- firesafe design
- heating jacket
- FDA grade gaskets and packings
- leak detector at stuffing box
- interchangeable seat
- inside and/or outside polishing
- additional draining and/or cleaning nozzles
- stroke limit or proximity switches
- manual override for pneumatic actuator
- dry air actuator
- stainless steel pneumatic actuator
- pneumatic actuator with stroke damper if trip time > 50 mm/s
- actuator locking system (safety)
- manual operator with locking mechanism
- chain handwheel
- manual operator extension, if required with cardans
- manual operator mounted on ISO base for later adaptation of actuator
- electric actuator with local/remote controls
CAUTION: some options are not compatible