Pressure Gauge Saver, Throttling Device

Ashcroft's gauge savers have an elastomeric bladder that separates the process fluid from the pressure element. The entire system above the bladder is solid filled with a fluid such as glycerin or silicone. A throttling felt is installed in the fluid system where it is not subjected to the process fluid. This device is suitable for use where temperature, pressure and process material will not affect the elastomeric bladder or liquid fill. The gauge saver should be attached to the gauge at the factory, but it is possible to install it in the field. The throttling effect can be adjusted before the system is filled and assembled. The steel bulb chamber is easily cleaned. Gauge savers are also safety devices, increasing gauge life by preventing corrosive process material from contacting the bourdon tube. Use of gauge saver adds 1/2% to gauge accuracy.