True or False: A check valve should be installed between a trap and the supply header if a group of traps drain into a common return header.

A check valve is typically used to prevent backflow in a piping system, ensuring that the fluid flows in only one direction. In the context of steam traps draining into a common return header, the primary purpose of the traps is to remove condensate and maintain optimal thermal efficiency.

When several traps drain into the same header, the design of the system should allow for free drainage of condensate without the need for check valves. If a check valve were installed between the traps and the supply header, it could potentially create unnecessary restrictions or complications in the condensate return process. This could lead to issues such as inadequate drainage, which would decrease system efficiency and potentially cause water hammer or other operational problems.

By keeping the system free of check valves between the traps and the common return header, the natural flow patterns and drainage characteristics of the condensate system can be maintained, ensuring that all condensate is effectively removed without hindrance. Thus, it is false to state that a check valve should be installed in this setup.