Function of the Valve
When the valve is closed (non-actuated position), there are always two seals between the middle and upper pipeline. If one seal is defective at this point, the resulting leakage can be deliberately channeled through the leakage outlet into the periphery, without mixing with the product in the second pipeline.
The shut-off between the middle and lower housing is performed with only one seal, and is not suitable for separating two incompatible media.This method ensures that there will not be any mixture between a product line and a line carrying cleaning fluid.
Special Features
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Certified, hygienic configuration
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Metallic stop
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Flexibility because of the modular principle
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Proven seal geometry
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Mixproof separation
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Optional separate lifting actuator for lifting the two valve discs
- Optionally spray cleaning connection for cleaning the leakage chamber
Type Y | Type Y_L, Y_C | |
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, ODRa ≤ 0.8 µm IPS Ra ≤ 1.2 µm |
DN, OD Ra ≤ 0.8 µm IPS Ra ≤ 1.2 µm |
External housing surface | Matte blasted | |
Control and feedback system | Connection 0 (without control top) | |
Actuator type | Pneumatic actuator air / spring | |
Connection fittings | Welding end | |
Identification | Adhesive ID tag | |
Valve seat version | Clamped seat ring | |
Certificates | A3, CE | A3, CE |
Application Examples
The typical application for this mixproof valve with changeover function is the divert function after a pasteurizer.
For this application, the VARIVENT® mixproof divert valve type Y has been approved by the German Federal Dairy Research Centre in Kiel for use after a pasteurizer.