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.
Recover the value - Reduce the waste: GEA VARICOVER Product Recovery System
While the initial interest in heat pumps was to save on operating costs, reducing emissions is now the main driver for the technology. Learn more about how GEA is spearheading efforts to increase energy efficiency and reduce CO2 emissions through hidden champion heat pump technology for industrial and district heating sectors.
What if your favorite chocolate didn’t require cocoa beans and your coffee was locally produced? As climate disruption, price hikes and ethical concerns hit two of our most beloved indulgences, scientists are reimagining how we produce them – using microbes, not monocultures. The goal: preserve the flavor and properties of coffee and chocolate while minimizing carbon emissions and improving food resilience.
Ports now compete not just on logistics, but on sustainability. At Greece’s Piraeus port, an advanced processing and recovery facility recycles ship waste oil into fuel. Equipped with GEA’s high-performance centrifuges, it sets a new benchmark for state-of-the-art, environmentally responsible port operations.