Pressure Gauge Installation Notes

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Delvin pressure gauges are available in a variety of pressure ranges, with options of either bottom or rear entry point.

Most Delvin gauges are glycerine filled, which means they are more tolerant to rapid fluctuations in pressure. The liquid dampens out pulsations, reduces wear on moving parts and prolongs the useful life of the gauge.

Selecting the best gauge.

Ideally, select a gauge where its normal operation will be around 50% to 60% of full scale. To protect the gauge, you must also be sure that the maximum scale will never actually be reached.


Protecting gauges from high temperatures.

When used with steam or hot water, gauges may discolour and/or have a shortened life unless precautions are taken.

In such situations it is strongly advised to use a ‘pigtail’ to help isolate the gauge from damaging temperatures. 


Thread seal tape will not only prevent leakage past the thread, but will allow you to have the gauge facing in a good direction.


When installing a gauge, never use the head of the gauge to screw it into a socket as this may damage the seal around the stem.

Once fixed in position, remember to cut the tip off the rubber bung at the top of the gauge.

This will ventilate the gauge, and improve accuracy, particularly at low pressures.