VARIVENT® Divert valves
VARIVENT® single-seat divert valves are used for simple divert functions in hygienic applications. The valves are characterized by their ease of operation and flexibility. The individual variants are designed for different flow directions.
Single-seat switch valves are suitable for separating and distributing fluids. There is only one seal for each switching rod in the valve disc, which separates the respective pipelines from one another. Single-seat switching valves are therefore not suitable for separating incompatible fluids.
- Certified, hygienic configuration
- Metallic stop
- Flexibility because of the modular principle
- Proven seal 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 hammers when closing one path while the product is flowing, single-seat divert valves should be switched against the flow direction of the product if possible.
The single-seat divert valve type W is used for merging products from two pipelines, whereas valve type X has been designed for product distribution. The valves are characterized by their ease of operation.
In practice, these valves are frequently used in CIP supply and return lines. One typical application is also found at the end of a valve block in which the valves are fitted as divert valves between the process line and the drainage (e.g. during pushing out).
VARIVENT® long-stroke valves are used for manufacturing products with relatively large particles or for viscous products, such as strawberry yoghurt.
The structure of the VARIVENT® modular system means that different valve configurations (closing direction of the valve disc) and numerous options are available. Please refer to the options section in the catalog for information about these.
| 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 & X, X_V, X_R Please refer to the catalog for information.
| 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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