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3.
Description
3.1.
Valve versions
3.1.1. Twin pilots
The pressure distributor pilot is mounted directly on top of the V132, in this case inlet water is the
control fluid and feeds the pilot circuit from the top collector. A controller with a proper camshaft
(called twin pilot camshaft) must be mounted on top of the valve and linked to the pilot stems. The
rotation of the camshaft moves the stems of the pilots in/out the pilot circuit, deviating the control
water inside the proper side of the V132 pressure chambers to move the pistons of the valve according
to the various cycles/phases.
3.1.2. External connections
There are four quick connection ports on top of the valve, each port is linked to a pressure chamber
inside the valve. The hydraulic distributor with pilots has to be mounted remotely from the valve, the
pilot ports can be connected to valve ports with a diameter of 6 mm flexible tubing.
The remote camshaft can control up to 4 pilots hence more valves can be controlled with a single
distributor. For this reason this configuration is generally used to:
•
add outlet shut off pneumatic valve;
•
add bypass during regeneration;
•
control a valve in the suction line and make a timed brine draw.
External connections
Ref. MKT-IM-003 / B - 19.04.2017
Installer manual Siata V132 - SFE - Description
Twin pilots
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