CRANE® stop check valves are as essential to safe operation of a boiler plant as safety valves or other safety devices attached to the boiler.
When more than one boiler is connected to the main steam header, a stop check valve should be installed in the pipeline between each boiler and the header.
The valve should always be placed so that the pressure in the boiler is under the disc. Straightway valves may be used in horizontal or vertical lines for upward flow. Angle valves may be used for upward horizontal or horizontal downward flow.