Double-seat valves
A special feature of this valve is that the pig can be conveyed through the cylindrical design of the housing. Pigging technology enables valuable products to be recovered at the end of the process step, thereby minimizing product residues in the pipe.
| Type L_H,
Piggable Upside Down | Type L_S,
Piggable Upright | |
| 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 | Ra ≤ 0.8 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 | Welded seat ring | |
| Certificates | 3-A, CE | |
DN 40 - DN 100
OD 1,5" - OD 4"

VARIVENT® double-seat valves are used for mixproof shut-off of incompatible products at pipe junctions.

VARIVENT® mixproof valves type C and K are used as an efficient alternative for mixproof separation of incompatible products at pipeline junctions within CIP systems or gas blocks.

LoTo solutions available for all hygienic seat valves ensure a safe maintenance & commissioning of process plants. Use an easy-to-apply AIR LOCK to cut off the control air connection. Or replace the feedback system with a sturdy DISK LOCK to safely block valve action.
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There was a time when the phrases ‘non-alcoholic beer’ and ‘tastes good’ were seldom used together in the same sentence, particularly by consumers. But low-proof and alcohol-free beers have come a long way – many of them now refreshing drinks in their own right – thanks in no small part to technology from GEA.
At GEA, our commitment to engineering for a better world fuels our pursuit of innovative solutions that enhance patient care and safety. One of our most promising ventures in recent years is aseptic spray drying – a technology that promises to revolutionize pharmaceutical manufacturing.