The Cavins Model ‘MH’ Combination Gas Anchor and Desander is an improvement upon the Cavins Model ‘G’ “Poor Boy” style gas separator. Its larger upper body is designed to accommodate higher volumes of fluid and gas when used with a sucker rod pump.

The Cavins Mdl. 'MB' Combination Gas Anchor and Desander is an improvement upon the Cavins Mdl. 'G' and Mdl. 'MH' models. As well as a larger upper body designed to accomodate higher volumes of fluid and gas, the MB utilizes an added centrifuge separator specifically designed to separate gas nearer the inlet slots; doing so dramatically increases the gas separating efficiency of the tool.

The Cavins Model ‘MH’ Combination Gas Anchor and Desander is an improvement upon the Cavins Model ‘G’ “Poor Boy” style gas separator. Its larger upper body is designed to accommodate higher volumes of fluid and gas when used with a sucker rod pump.

The Cavins Model ‘G’ Combination Gas Anchor and Desander is a conventional “Poor Boy” gas separator with a desander on the bottom. Of the three models of gas separators Cavins offers for sucker rod pumps, this one is designed for the lowest range of fluid and gas rates. The Cavins “Sandtrap” Desander Sub separates solids from the fluid, which settle by gravity into joints of tubing run on the bottom of the work string as a mud anchor.