Mechanical · M-P7E9C

Bladder Expansion Tank

Materials

Concrete Steel

Elements

Beams Floors / Slabs Bracing Drainage Anchors / Embeds Connections / Plates

Connections

Base Plate / Anchorage Bracing Connection Embed Plate

About this detail

A bladder expansion tank is anchored to a level concrete pad on a slab on grade using the manufacturer's integral seismic anchor flange with three equally spaced 3/8-inch diameter Hilti KBTZ anchors having a 3-inch embedment. The tank connects to the primary loop header via piping equipped with a shut-off valve, pressure gauge, union, pressure/temperature relief valve, and 120-degree anti-thermal siphon piping featuring an 18-inch minimum heat trap. A 3/4-inch capped connection provides make-up water through a shut-off valve with a removable handle, while a drain valve with a threaded hose connection and cap leads to a drain pipe discharging to the nearest approved receptor.

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