... 250GFCompound filled glycerine 30"-0-250 PSI, class 1.6 connection back 1/4"SAE, 2-3/4"dia, stainless ... frameRW-500GFPressure filled glycerine 0-500 PSI, class 1.6 connection back 1/4"SAE, 2-3/4"dia, stainless ... GFCompound filled glycerine 30"-0-250 PSI, class 1.6 connection bottom 1/8"NPT, 2-3/4"dia, ... 500B-GFPressure filled glycerine 0-500 PSI, class 1.6 connection bottom 1/8"NPT, 2-3/4"dia, stainless ...