The Duke 3553-2 1/2" LP gas pressure regulator is designed to control and maintain outlet pressure within a 5.5" to 12" WC range, supporting reliable operation of compatible gas appliances. It works by reducing incoming gas pressure through an internal diaphragm and spring mechanism, delivering a steady flow despite supply fluctuations. Featuring 1/2" FPT inlet and outlet connections,... https://partsfe.ca/3553-2-duke-pressure-regulator-12-lp