we are offering 4 way water heater bypass valve. our all-brass 4-way ball valve with npt threaded connections creates the ideal rv water heater bypass with just one valve. fewer valves mean lower installed cost and fewer potential leak paths. anderson quality means more reliability and long service life. features: • 12" mnpt • corrosion resistant • single valve - 2 position bypass operating conditions: • working temperature: -30° to +160° f • maximum pressure: 125psi