1" NPT lever acting, certified line pressure gas regulator with positive dead-end lock-up, vent limiter, 2 psi maximum inlet pressure, 7-11" WC outlet pressure, 425,000 BTU/hr. maximum capacity on individual loads, and 600,000 BTU/hr. maximum capacity on multiple loads. 325‑L Series line pressure regulators are for 2 psi piping systems. 325 Series regulators for use in residential, commercial, and industrial applications. The 325 Series features a high-leverage linkage assembly to deliver positive dead-end lockup. These regulators can precisely regulate from full flow down to pilot flow. Suitable for natural, manufactured, mixed gases, liquefied petroleum gases, and LP gas-air mixtures.