Diaphragm pressure gauge with vent valve.

The model PG43SA-S diaphragm pressure gauge for sanitary applications, from WIKA, can now be supplied with an optional vent valve. With the valve closed (ingress protection IP68), the inside of the instrument is permanently protected against penetration by extremely aggressive substances such as those used for external cleaning in certain pharmaceutical processes.

While the instrument is actually performing its duty, pressure measurement (gauge pressure), the valve must be open. This also applies to sterilisation in an autoclave, to prevent internal pressure having negative effects.

The hygienically designed vent valve is easily accessible on top of the case. It is adjusted, without tools, using a wing nut; a locking ring prevents it from unscrewing. Open and closed positions, as well as the direction of rotation, are clearly marked.

• WIKA products are marketed in Ireland through Instrument Technology.

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