OATEY 33914 Half Clamp Suspension Pipe Clamps 1/2"

The Oatey 33914 is a 1/2 inch half clamp suspension pipe clamp, sized to carry 1/2 inch pipe or tube on a suspended run.

The 33914 is rated for a temperature range of 0F to 160F, so it suits domestic hot and cold water lines within that range. It is polypropylene, so it won't corrode where metal clamps would, and it is approved for use on hydronic systems.

Noise and vibration transfer is one of the reasons to use it. The polypropylene body isolates the pipe from the hanger or structure and reduces water line noise and vibration, which a bare metal clamp bolted to framing does not do.

The ribbed design is there specifically to allow for pipe expansion and contraction, and it also lets the line cool faster. That matters on long hot water or hydronic runs where a rigid clamp would bind the pipe and cause creaking or stress at the joints.

A half clamp like the Oatey 33914 wraps one side of the pipe and fastens to the hanger or structure, so the pipe drops in from the open side. That makes it quicker to set on an overhead suspended run where you are feeding a long length of 1/2 inch pipe. A full or two-piece clamp surrounds the pipe completely and is what you want where the line must be captured against uplift or movement in both directions.

Yes, it is approved for hydronic systems. Keep the loop temperature inside the clamp's 0F to 160F range; above that you need a metal clamp instead.