Reverse Osmosis 100 GPD Diaphragm Booster Pump DC 24 V , 110 V Transformer + 2 Pcs Connect Fittings (1/4 tube x 3/8 Threaded )+ High pressure shut off valve Using Booster pump is recommended for those who they have low incoming city water pressure 50 PSI or less. Reverse osmosis systems will increase your system input pressure then will increase the water production & purity as well. Boost pressure 80 PSI High pressure switch for reverse osmosis booster pump (on - off) operation control. High pressure switch job is to turn off the booster pump when the tank is full. The pump will automatically control all residential reverse osmosis systems. The pump turns on to produce water into the pressure tank, and then turns off when the pressure tank is full. This pump is able to work at least 3 months continuously without stopping. Note: Do not select this pump if you are on city water pressure is 55 PSI and up. This pump will not increase the production flow or the pressure for those who are on city water pressure 55 PSI and up. This pump will not help those who would like to increase the water transfer volume/flow to the ice maker or the fridge or the RO faucet, that product is named a delivery pump which is a completely different product. Features This booster pump is designed for membranes rated 100 GPDIt can be mounted in several positionsSafe power operation with, low energy (low voltage - 24 volt). Transformer included.The motor of these boosters is Duty cycle will vary with load and ambient temperature smoother running longer life and work with high efficiency, never Mind if its installed in warm, humid, hostile environment where other pumps can’t operate in such hard environmentsProduct total weight with transformer 5 Lbs - Booster dimensions 6.5 inch X 4 inch X 4 inch