The ambulance industry uses the GENTEC 195M series of regulators due to their sturdy body, efficiency, and the fact that they are lightweight. The single-stage regulators hold up against a maximum pressure of 3000psi and they provide steady pressure and flow output due to the diaphragm assembly to the work is continuous without any interruptions. They are preset to 50psig, and overpressurization is prevented by the internal re-seating relief valve. They fit all CGA540 oxygen tanks due to the standard CGA540 nut and nipple inlet connections included, and these connections also have sintered bronze filters to guarantee a clean supply of oxygen. Two outlet connection types are available, the 90-degree and straight elbow