Pre Pressurized Accumulator Tank 1L 125PSI 1/2in MNPT RV Accumulator Tank with 2 Clamps PTFE Tape Item Type: Pre Pressurized Accumulator Tank Material: PA Plastic Size: Approx. 30x14.4cm / 11.81x5.67in Volume: 1L (33.8FL.OZ) Charging Pressure: 10PSI/0.7BAR Maximum Operating Pressure: 125PSI/8.6BAR Air Fill Valve: Standard Car Style Tire Valve Inlet Outlet Diameter: 1/2in MNPT Application: Plays a role in maintaining constant pressure, preventing the system pressure from fluctuating and making the water flowing smoother. 1. for RV Use: It can effectively absorb the excess heat that enters the water system pipes due to the heater, and there will be no "poof" sound when turning on the faucet2. for RV Leakages: After long term use, pipe connections may loosen, resulting in drip leakages that cause the water pump to start frequently. The pressure tank can effectively reduce the frequency of water pump startups. 3. During Showering: Improves water pump frequency startups caused by uneven pipes and nozzles, creating a more consistent water flowing. Working Principle: 1. The pressure tank is pre charged with pressure before leaving the factory. 2. When the water pump is turned on, water enters the pressure tank. When the pressure tank is full, the water pump stops working. 3. When water is needed, the water in the pressure tank enters the pipes first due to the pressure of the air bladder. The water pump remains off until the pressure in the pressure tank drops below the starting pressure of the water pump, at which point the water pump starts working, repeating this cycle.