Double-seat Valves

Mixproof Shut-off Valves VARIVENT® L, piggable

A special feature of this valve is that one of the valve housings may be pushed out using a pig. This technique allows for the recovery of high quality products at the end of a process step and thus to minimize product residues inside the pipe.


Please refer to the catalog for more information.

Technical Data of the Standard Version
Type L_H,
Piggable Upside Down
Type L_S,
Piggable Upright
Material in contact with the product1.4404 / AISI 316 L
Material not in contact with the product1.4301 / AISI 304
Seal material in contact with the productEPDM, FKM, HNBR
Ambient temperature0 to 45 °C
Air supply pressure6 bar (87 psi)
Product pressure5 bar (73 psi)
Surface in contact with the productRa ≤ 0.8 μm
External housing surfaceMatte blasted
Control and feedback systemConnection 0 (without control top)
Actuator typePneumatic actuator air / spring
Connection fittingsWelding end
IdentificationAdhesive ID tag
Valve seat versionWelded seat ring
Certificates3-A, CE


DN 40 - DN 100

OD 1,5" - OD 4"

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