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VARIVENT® Single-Seat Valves with Switching Function
VARIVENT® single-seat valves with a switching function are used for simple switching functions in hygienic applications. These valves are characterized by their ease of operation and flexibility of use. The various models are designed for different flow directions.
Single-seat valves with a switching function are suitable for separating and distributing media. Each valve disc contains only one seal per connecting rod, which separates the respective pipelines from one another. Single-seat valves with a changeover function are therefore not suitable for separating ”hostile” media.
- Certified, hygienic design
- Mekaniskt mmetal stop
- Flexibility through it the modular principle
- Proven sealing geometry
| Feature | Type | |
|---|---|---|
| Product merging | Modular system | Single-seat valve, type W |
| Product merging | With optimized maintenance, radial sealing | Single-seat valve, type W_R |
| Product merging | Long-stroke valve for viscous products or products with large particles | Single-seat long-stroke valve, type W_V |
| Product distribution | Modular system | Single-seat valve, type X |
| Product distribution | With optimized maintenance, radial sealing | Single-seat valve, type X_R |
| Product distribution | Long-stroke valve for viscous products or products with large particles | Single-seat long-stroke valve, type X_V |
To avoid water hammer when the valve closes while product is flowing, single-seat valves with a reversing function should, if possible, be operated against the direction of product flow.
While the Type W single-seat valve is used to combine products from two pipelines, the Type X valve is designed to distribute the product. These valves are characterized by their ease of operation.
In practice, these valves are often used in CIP supply and return lines. Another typical application is at the end of a valve block, where the valves are installed as diverter valves between the process line and the drain, for example, during product discharge.
VARIVENT® long-stroke valves are used in the production of products containing relatively large particles or viscous products, such as strawberry yogurt.
Thanks to the modular VARIVENT® system, various valve designs are available, including different closing directions for the valve disc, as well as a wide range of options. See the section on options in the catalog for more information.
| Sizes | |
|---|---|
| Single-seat divert valves | Long-stroke divert valves |
| DN 25 - DN 150 | DN 65 - DN 100 |
| OD 1” - OD 6” | OD 2 ½” - OD 4” |
| IPS 2” - IPS 6” | |
Types W, W_R, W_V, and X, X_V, X_R – For more information, please refer to the catalog.
| Type W |
Type W_R radial Type X_R radial |
Type W_V (Longstroke) | Type X |
Type X_V |
|
|---|---|---|---|---|---|
| Recommended flow direction | Product merging | Product-dividing | |||
| 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) | 6 bar (87 psi) | 6.4 bar (93 psi) | 6 bar (87 psi) | OD 2 ½”- OD 3″ 4.8 bar (70 psi) OD 4″ 6.3 bar (91 psi) |
| Product pressure | 5 bar (73 psi) | 5 bar (73 psi) DN, OD | DN 65 - DN 80 OD 2 ½” - OD 3″ 10 bar (145 psi) DN 100 OD 4″ 5.2 bar (75 psi) |
5 bar (73 psi) | OD 2 ½”- OD 3″ 5 bar (73 psi) OD 4″ 5.2 bar (75 psi) |
| Surface in contact with the product | DN, OD Ra ≤ 0.8 μm IPS Ra ≤ 1.2 µm |
Ra ≤ 0.8 µm | Ra ≤ 0.8 µm | DN, OD Ra ≤ 0.8 μm IPS Ra ≤ 1.2 µm |
Ra ≤ 0.8 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 seat ring or fixed vertical port | Welded seat ring | Clamped seat ring or fixed vertical port | Clamped seat ring | |
| Certificates | 3A, CE |
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VARIVENT® Single-Seat Valves
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