Tank Bottom Valves - Guichon


For all liquids, powder, gas. Optional stem bellows for dangerous medium

DN 20 to DN 400

3/4" to 16"

PN 10 to 250 acc. to size

150 to 1500 Lbs acc. to DN

Functions – Tank bottom valve

• tank or reactor bottom outlet valve

• tank bottom control valve

Operating principle – Tank bottom valve

– Shutter : Disc or piston with vertical move

Rising disc or Disc lowering into body to open

– Process/Atmosphere sealing with stuffing bow (repackable in service)

– Body designed for further flowing



Construction materials : Carbon Steel (CS), Stainless Steel (SS), Duplex & Super Duplex, Inconel & Incoloy®,

Titanium, Zirconium, Uranus® B6, Tantalum, Nickel, Hastelloy®, Monel

Construction Methods : Fabricated (Welded), Cast



 • 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



DN 20 to DN 400

3/4" to 16"

PN 10 to 250 acc. to size

150 to 1500 Lbs acc. to DN

Sealing system

• Disc sealing by PTFE-to-metal contact for a service temperature up to 180°C or by metal-to-metal contact.

• Tank connection by means of counter flange

• External tightness by means of bellows (see options list)



hand-wheel, double acting pneumatic actuator,single acting pneumatic

actuator, hydraulic actuator, electric actuator, air cylinder.

Closing device disc



– adaptation to any type of connection

– “tank safe” design with double disc

– disc with double tightness system (PTFE/metal + metal/metal seated disc)

– profiled disc to fit the tank or pipe contour (no dead areas)

– disc with aluminium seating surface

– disc o’ring

– removable seat

– o’ring on body extension (no dead areas)

– vacuum tight

– stem bellows

– temperature sensor through disc

– additional draining and/or cleaning nozzles

– heating jacket

– firesafe design (certified)

– FDA grade gaskets and packing rings

– leak detector at stuffing box

– inside and/or outside polishing

– stroke limit or proximity switches

– side mounted pneumatic actuator

– manual override for pneumatic actuator

– stainless steel pneumatic actuator

– actuator locking in closed position (safety)

– manual operator with locking mechanism

– chain hand-wheel

– extended manual operator, optionally with cardans

– manual operator mounted on ISO base for later adaptation of motor

– electric actuator with local / remote controls

CAUTION : some options are not compatible

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