Watts ETA 40 Part of the ETA Series Access Tile this unit incorporates a ¾″ this unit incorporates a ¾″ IPS flushing connection and a standard no hub outlet while the integral trap and side outlet ensure consistent drainage and odor control Specifications Air Precharge 12 PSI Air Valve Yes Bladder Material Butyl Brand Watts Color Red Diameter 16 IN EAN 098268913248 Electricity Required No Fuel Gauge No Inlet Connection Size 1 IN Inlet Connection Size Metric 25 MM Inlet Thread Type NPT Lead Free NO Liner Material Does Not Apply To Product Maximum Operating Temperature Fahrenheit 240 Maximum Working Pressure PSI 150 Mount Type Free Standing Orientation Vertical Part Number 0212002 Series ETA Stand Included Yes Tank Acceptance 10 Gallons Tank Height 33 IN Tank Material Carbon Steel Tank Volume 25 Gallon Specification Sheet ETA It is an ASME Section VIII fixed bladder type precharged expansion tank