1PCS Expansion Tank for Hot Cold Water Self-priming Pump Domestic Constant Pressure Tank Replacement 2L/15L Note: The specifications of the water pump pressure tank are named based on the buffering performance and market conditions. Generally, it is not used in professional water storage scenarios and is not calculated by the number of liters of water it can hold. If all the internal airbags are removed and the tank is empty, the water storage capacity is about 60% of the marked capacity !!! Product features: Automatic water pump pressure tank 2L/1.5L (There is a high temperature constant pressure air bag and a threaded sealing ring) Material : 304 stainless steel (no rust, long life) Diameter of external thread : 15mm/20mm suitable for (125-1100W) Mainly adapt to domestic and foreign s of hot and cold water automatic self-priming booster pump general use! Note: Our pressure tank is fully inflated! Product advantages: The air pressure tank adopts diaphragm capsule structure, and there is a ternary C air bag which can be inflated and can hold 2L normal atmospheric pressure air. The air bag is used to store the water pressure of the water pipe during the peak period, buffer the impact of high water pressure on the pump, effectively reduce the frequent start-up times of the pump, and extend the service life of the pump. It is a rare new type of constant pressure accessories for the pump. With this product, adding an automatic pressure switch can perfectly realize the pump water full pump long distance automatic stop and start. Reasons for replacing pressure tanks and testing methods: 1. The pump starts frequently, but there is no problem elsewhere. 2. Press the top valve and find water coming out, which proves that the air bag has broken and needs to be replaced! _x000D_