RV Accumulator Tank 1L 10-125PSI 1/2 Inch MNPT Port Pre Pressurized Accumulator Tank for Boat Yacht Item Type: RV Accumulator Tank Material: PA Plastic Size: Approx. 30x14.4cm / 11.81x5.67in Internal Volume: 1L (33.8FL.OZ) Charging Pressure: 10PSI/0.7BAR Maximum Operating Pressure: 125PSI/8.6BAR Air Fill Valve: Standard Car Tire Valve Inlet Outlet Diameter: 1/2 Inch MNPT Function: Maintains constant pressure to prevent system pressure fluctuations for smoother waterflow Features: 1. For RV Use: Effectively absorbs excess heat from the water system pipes due to the heater, without noise when turning on the faucet 2. For RV Water Leaks: After long term use, pipe connections may loosen, causing occasional water leaks and frequent pump starts, the pressure tank can reduce pump start frequency effectively 3. During Showering: Can improve water pump frequent start stop caused by uneven pipes and nozzles Working Principle: 1. The pressure tank is pre pressurized 2. When the water pump is turned on, water enters the pressure tank. When the pressure tank is filled, the water pump stops working 3. When water is needed, the water in the pressure tank first enters the pipeline due to the air chamber pressure, the pump remains off until the pressure in the tank drops below the pump start pressure, and the pump starts working again, repeating this cycle