Product Code:SV-BS1101Accessories Of Gaugesize:1/4"NPT X1/4 NPTPorous stone pressure gauge snubbers are designed to dampenpressure pulsations to enhance gauge life. They have no movingparts, thus are completely reliable to 1000 psi. They can be pipedtogether in pairs for certain applications where severe pulsationsexist. The coil syphons are required for use with gauges on steamlines, and are designed to form a barrier of water in the coil,preventing steam from attacking the bourdon tube solder joints.