Hauck S311D 3/8" NPT Oil Regulating Valve Oil Capacity (GPH) @ 180° Valve Position 192 GPH @ 100 PSI Notes: 1. Capacities based on No. 2 fuel oil @ 0.849 s.g. and 60°F fluid temperature. 2. Pressure drop across full open valve. Actual test data measured at 25 psig pressure drop, all other capacities calculated. The Hauck Self-Cleaning Micro Oil Valve is designed to provide positive, accurate, graduated control of fuel oil flow to any type of burner. Flow control may be either manual or automatic. A large indicator dial provides a greater range of individual precision settings. This valve is specifically engineered to handle smaller oil capacities while providing a graduated flow through its range. The Hauck Self-Cleaning Micro Oil Valve is intended for flow control; it is not designed to replace a shutoff valve. For tight shutoff, a ball type or solenoid shutoff valve must be provided in the fuel supply line. These valves will successfully and efficiently handle any grade of fuel oil, even heavy fuel oils, when preheated to the proper viscosity and flow characteristics. Exact Same As Hauck S-3-11C, S311C, S311 Power Flame 262280Hauck # HK42575