Overview HYDROCARBON GAS SAMPLERS CLIF MOCK True Cut LGS-1 Pneumatic PD Sample Pump CLIF MOCK True Cut LGS-1 pneumatic positive displacement (PD) sample pump transfers samples into a vented sample receiver or a pressure-balanced piston cylinder. A purge valve manifold allows easy connection to process piping, including fast-loop connections. Sample size is set by adjusting the knob at the top of the sample pump to a predetermined height above the flat surface of the pump. The height measurement directly corresponds to the sample size desired. JISKOOT G6 Hydrocarbon Gas Sampler Pneumatically actuated sampler for hydrocarbons gases at pressures up to 200 bar. The G6 uses pressure balanced seals to maximize life and is manufactured from materials suitable for corrosive duty. It is designed for installation in a bypass loop and has 1/8” NPT fittings.