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GEA valves

VARIVENT® SHUT-OFF VALVES

VARIVENT® SHUT-OFF VALVES

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VARIVENT® SHUT-OFF VALVES

VARIVENT® Series
The structure of the VARIVENT® modular system has many optional versions available to best optimize the valve in the process. Please refer to the options section in the catalog for information about these.

  • Certified, hygienic configuration
  • Metallic stop
  • Flexibility because of the modular principle
  • Proven seal geometry

To avoid water hammers when closing the valve while the product is flowing, single-seat shut-off valves should be switched against the flow direction of the product.

Valve type N is designed for a flow from the lower to the upper pipeline, whereas valve type U is for the opposite flow direction.

In practical use, these valves are used

  • as emptying / drainage valves
  • for shutting off a bypass line
  • as dosing valves

VARIVENT® long-stroke valves are used for transporting fluids with relatively large particles or for viscous products, such as yoghurt with pieces of fruit.

Single-seat shut-off valves: Long-stroke shut-off valves

DN 25 – DN 150: DN 65 – DN 100

OD 1″ – OD 6″: OD 2 ½” – OD 4″

Feature

From bottom to top:Modular system
From bottom to top:Long-stroke valves for viscous products or products with large particles
From top to bottom:Modular system
From top to bottom:With optimized maintenance, radial sealing
From top to bottom:Long-stroke valves for viscous products or products with large particles

Type

From bottom to top:Single-seat valve, type N
From bottom to top:Single-seat long-stroke valve,
type N_V
From top to bottom:Single-seat valve, type U
From top to bottom:Single-seat valve, type U_R
From top to bottom:Single-seat long-stroke valve,
type U_V

Type

 N
Recommended flow direction From bottom to top
Material in contact with the product 1.4404 / AISI 316 L
Material not in contact with the product 1.4301 / AISI 304
Seal material in contact with the product EPDM, FKM, HNBR
Ambient temperature 0 to 45 °C
Air supply pressure 6 bar (87 psi)
Product pressure 5 bar (73 psi)
Surface in contact with the product DN, OD, Ra ≤ 0.8 µm, IPS, Ra ≤ 1.2 µm
External housing surface Matte blasted
Control and feedback system T.VIS® control top
Actuator type Pneumatic actuator air / spring
Connection fittings Welding end
Identification Adhesive ID tag
Valve seat version Clamped or welded seat ring
Certificates EHEDG, 3A, CE

Type

 N_V (longstroke)
Air supply pressure 4.8 bar (70 psi)
Product pressure DN 65 – DN 80 OD 2 ½” – OD 3″ 10 bar (145 psi) DN 100 & OD4″5.2 bar (75 psi)
Surface in contact with the product Ra ≤ 0.8 µm
Valve seat version Clamped or welded seat ring

Type

U
Recommended flow direction From top to bottom
Air supply pressure 6 bar (87 psi)
Product pressure 5 bar (73 psi)

Surface in contact with the product

 DN, OD, Ra ≤ 0.8 µm, IPS, Ra ≤ 1.2 µm
Valve seat version Welded seat ring
Certificates 3A, CE

Type

 U_R (radial)
Air supply pressure 6 bar (87 psi)
Product pressure 5 bar (73 psi)
Surface in contact with the product Ra ≤ 0.8 µm
Valve seat version Clamped or welded seat ring

Type

 U_V (longstroke)
Air supply pressure 4.8 bar (70 psi)
Product pressure DN 80OD 3″5 bar (73 psi)DN 100 & OD 4″5.6 bar (81 psi)
Surface in contact with the product Ra ≤ 0.8 µm