Operating Instructions; Supplied With; Security Instructions; Taking Into Operation - Bola E 683-18 Operating Instructions Manual

BOLA Pressure-Relief Valve

1. Supplied with

1 Pressure-relief valve with manual ventilation

1 Operating Instructions

2. Security Instructions

» Do not take a damaged valve into operation.
» The valve is suitable only for gas or watery products without any solids.
» Observe the working pressure range from 0 up to 10 bar during operation.
» The valve is only suitable for product temperatures from –20 °C up to + 150 °C.
» The flow direction has to be observed. It is marked with an arrow on the housing.
» If used as an overflow-valve, a controlled deviation of the overflowing medium has to be ensured.
» Make sure that all components of your installation withstand the pressure that has been adjusted on the valve.
» Make sure that the requested holding pressure is adjusted.
» Prior to installation or removing the valve, the inlet and outlet to/from the valve have to be pressureless.

3. Taking into operation

The opening pressure is factory set to 1.5 bar. Any other opening pressure can be adjusted as follows:
» Loosen the locking nut (1) by turning it counterclockwise upwards
the adjusting screw (2).
» Turn the adjusting screw (2) clockwise with two fingers until you
feel a resistance. The pressure-relief valve is now closed.
» Connect the inlet of the pressure relief valve with a tubing to a
compressed air service unit or a pressure gauge. The flow direction
is marked with an engraved arrow.
» Connect the outlet with a tubing (30). Put the tubing end in a
vessel with water.
» Fix the tubes with BOLA Laboratory Screw Joints GL 18.
2
1
2
20 30
8