This leak detector is designed to be connected close to the outlet side of the gas regulator. It then provides an instant visible check for leaks. Bubbles in the sightings chamber indicate a leak downstream of the bubble tester. Supplied complete with fluid. It may be used in boats, caravans and other applications. The Boat Safety Scheme states that "an approved bubble tester is highly recommended". Technical Specification: Dimensions (HxWxD): 90 x 60 x 30mm Max. working pressure: 2 bar (29.4psi) Capacity: 12kW Pipe connections: 8mm/10mm compression inlet & outlet Part No. N-29001 - 8mm Part No. N-29002 - 10mm Spare Fluid: N-29003 Capacity Description 12kW Material Copper Compression Fitting Size 8mm Thread Connection Compression Thread Gender Male Pressure Rating Max Operating: 29.4 PSI (2 Bar) Brand Alde Height Description 90mm (3.54") Width 60mm Depth 30mm