Operating principle
The LBV valve provides double safety: the two butterflies are simultaneously actuated by only one actuator.
When the two valves are closed, there is a chamber between them. The chamber is under atmospheric pressure as it opens to the exterior, thus, in case of failure of any of the two gaskets, leakage of the liquid product will indicate any possible mixing of products.
The state of the gaskets is supervised by means of either of the leakage detectors.
The other detector (superior) controls the entry of the cleaning solution to prevent any kind of contamination in the chamber.
These 2 leakage detectors provide optimal protection and enable cleaning of the intermediate chamber.
Design and features
Compact and robust design.
Low-pressure losses.
Interchangeable half-bodies (any connection type).
Connections:
weld DIN 11850
CLAMP DIN 32676
threaded DIN 11851
weld OD ASME BPE
CLAMP OD ASME BPE
Materials
Parts in contact with the products: AISI 316L
Other St.St. parts: AISI 304
Gasket: EPDM according to FDA 177.2600
Internal surface finish: Ra ≤ 0,8 μm
External surface finish: Machined
Options
Gaskets: NBR, VMQ or FPM.
Connections: SMS, RJT, FIL-IDF, etc.
Double-acting pneumatic actuator.
Inductive position sensors.
C-TOP control head (inductive position sensors or microswitches).
