Maxitrol M611-1" Modulator Valve

Modulator Valve; Nominal Size 1 Inch; End Connection Female Threaded x Female Threaded; End to End Distance 4 Inch; Temperature Rating -40 to 125 Deg F; Pressure Rating 1/2 PSI (Inlet), 2.5 PSI (Emergency Exposure Limit), 7 Inch WC (Outlet); Application Direct Fired (Negative Pressure) Burner; Applicable Standard UL/CSA (Canada and US); Gas Type Natural, Mixed Gas, Liquefied Petroleum Gas and LP Gas Air Mixture; Vent Pipe Connection 1/8 Inch Threaded; Swing Radius 6.2 Inch; Size 3.9 Inch Width x 7.7 Inch Height