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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 |