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SB Pressure Exhaust Valve

Regulating Valves > SB Pressure Exhaust ValveConcept

The Pressure Exhaust Valve is to be used in a system for remote control of the working pressure in tanks during a process creating increasing pressure.

The Pressure Exhaust Valve can be mounted directly on top of the tank, as part of a tank top system or located elsewhere in the pipework.

Working Principle

The Pressure Exhaust Valve is operated by means of the set point pressure being applied to the top of a membrane set. The pressure regulation will be identical to the set point pressure. The set point pressure is either reduced to the required pressure by means of a manual precision regulator or an IP converter controlled by a PLC.

When the tank pressure exceeds the set point pressure, the valve will open and release pressure through the valve side branch for atmospheric discharge or collection. To ensure correct working conditions, there should be no back-pressure after the vent port.

After force-opening of the Pressure Exhaust Valve by an air signal to the lower part of the membrane set, the valve is fully cleanable either by means of an optional CIP supply valve to the cleaning nozzle on the valve housing or simultaneously in line with cleaning of vent/recovery mains.

Standard Design

The valve is equipped with fittings for 4/6 mm nylon hoses for set point pressure and force opening. A CIP inlet is standard-closed with a closing plug. The plug can be changed to a cleaning nozzle designed to be supplied by a diameter of 8 x 1mm steel pipe.

Documentation

How It Works

Construction

The Alfa Laval SB Pressure Exhaust Valve consists of an AISI 316L stainless steel body, EPDM seals, and fittings for 4/6 mm nylon hoses for set point pressure and force opening. A cleaning nozzle and closing plug for the Cleaning-in-Place (CIP) inlet are also supplied. An optional pneumatic cleaning nozzle is available to replace the closing plug (see Options below). The valve can be used as an integral part of SCANDI BREW® tank top system.

Operating principle

The valve is operated by means of the set point pressure being applied to the top of a membrane set. The pressure regulation will be identical to the set point pressure. The set point pressure is either reduced to the required pressure by means of a manual precision regulator or an IP converter controlled by a PLC.

When the tank pressure exceeds the set point pressure, the valve will open and release pressure through the valve side branch for atmospheric discharge or collection. To ensure correct working conditions, there should be no backpressure after the vent port.

After force-opening of valve by means of an air signal to the lower part of the membrane set, the valve can be effectively cleaned either by using the cleaning nozzle for inline cleaning of the valve at the same time as CIP of the vent/recovery mains takes place, or by using an optional CIP supply valve to connect a Cleaning-in-Place system to the valve housing.

SB Pressure Exhaust Valve CLeaning

Option

• CIP supply valve
Pos. 1: Cleaning nozzle
Pos. 2: Closing plug
Pos. 3: Optional pneumatic CIP supply valve
Pos. 1 and 2 included with valve

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