Approved Vendor 60022 Thermal Expansion Tank, 2 gal Tank Capacity, Stainless Steel, 210°F Max. Op Temp RS3542 Variable Speed Trigger Adjustable Shoe Yes Variable Speed Trigger Adjustable Shoe Yes Power Source Cordless Stroke Type Straight Tool Weight 3 lb Blade Clamp Type Twist Lock Application General Purpose Series XTREME(TM) Variable Speed Yes Pivoting Head No Charger Included No Brushless Motor Yes Case Included No Tool Style Compact Vibration Reduction No Cordless Tool Kit Contents (1) Bare Tool Number of Batteries Included 0 Min Bend Radius 6 in Hose Color Black Hose Tube Material Nitrile Hose Cover Material PVC Nitrile Blend Hose Reinforcement Type Braid Hose Reinforcement Material Carbon Steel Reinforcement 2 Wire Braid Max Operating Pressure 150 psi Max Expansion tanks for water heaters alleviate excess pressure caused by the normal thermal expansion that occurs when water is heated