Model 290 stand alone OPCO, 1/2 inch Bryan Donkin 1/2 inch NPT model 290 stand alone OPCO, closes on downstream press increase over set point, manually reset, spring range: 14 to 28 inches wc Information: Capacity at 2 PSIG inlet is 225,000 BTUH Natural Gas $175.00
	Model 290 stand alone OPCO, 1 inch Bryan Donkin 1 inch NPT model 290 stand alone OPCO, closes on downstream press increase over set point, manually reset, spring range: 14 to 28 inches wc Information: Capacity at 2 PSIG inlet is 325,000 BTUH Natural Gas $175.00