FAQ
Pipe Supports
FAQs
Q What does CTS mean and how does it affect the size of the pipe support selected?
A CTS is an acronym for Copper Tube Size. Oatey supports are sized based on CTS. For example; 1/2"
CTS piping used in plumbing applications actually has a 5/8" outside diameter (OD), but is referred to as
1/2" pipe. 3/4" CTS piping used in same application has a 7/8" OD, but is referred to as 3/4" pipe. Pipe
classied as IPS or Iron Pipe Size will have larger ODs than CTS and HVAC pipe ODs are smaller than CTS.
Q Is a plastic hanger strap approved for supporting pipes?
A No. A plastic hanger strap should only be used for temporary or non-load bearing applications. It can
also be used as a mid-level strapping where required by code.
Q What pipe support product should be used for water lines passing through metal stud framing?
A Metal Stud Insulating Pipe Clamps. These are available for 1/2", 3/4" and 1" pipe sizes.
Q Are any of the plastic pipe support clamps approved for use with hydronic systems?
A Yes. All Oatey plastic pipe supports are approved for this application, but you should conrm the
maximum temperature that the pipes will reach when in use. With the exception of the DuoFit Pipe
Clamps rated from 0°F to 230°F and the Stand-Off Half Clamps rated from -60°F to 160°F, all other
Oatey plastic straps are rated from 0°F to 180°F.
Q How far apart should I put the pipe supports?
A There are several variables involved with the answer to this question; size of pipe, pipe material and changes
in direction. It is always best to check with your local building ofcials for new installation applications, but you
can also reach out to our customer service department for assistance when completing a repair project.
Q Is there a pipe strap that can be mounted at different angles and used for 1/2" and 3/4"
water lines?
A DuoFit Pipes Clamps