Tank is intended for installation in any pumped water system controlled by a pressure switch and can serve as a storage vessel as well as a pulsation dampener. By smoothing water flow and reducing on/off switch cycling of the pump the result is quieter operation, and longer pump life. The even flow of water gives better control of hot water temperature with systems using instant water heaters. Snap fittings include both 1/2" barbed and 1/2" threaded fittings. Internal bladder. Pre-pressurized to 10 psi. Capacity 33 oz. Ports 1/2" Hose Barb & 1/2" Thread Size 13-1/4" x 4-3/4" Dia.