RV48L-1/2 Maxitrol 1/2" Poppet Style Gas Regulator w/ Orifice Breather Hole The poppet model RV Series is designed primarily for main burner and pilot load applications. Typical applications include residential and commercial cooking appliances, hearth products, pilot lines, and residential water heaters. They are rated for up to 1/2 psi. These regulators are suitable for natural, manufactured, mixed gases, liquefied petroleum gases and LP gas-air mixtures. Note: This product should be installed by a licensed gas fitter.