Method of distributing water

A method for distributing water from a trap primer to at least one trap, the method comprising the steps:

• providing a trap primer having an upper chamber separated by a flexible diaphragm from a lower chamber, a resilient gas enclosure located in the lower chamber, the trap primer further having a valve stem with an orifice connected by a bore to a port, the diaphragm configured to releasably engage the valve stem closing off the orifice and preventing a flow of water through the trap primer;
• providing water to the trap primer at a line pressure;
• charging the upper chamber and the lower chamber with water at the line pressure;
• engaging the diaphragm with the valve stem and closing off the orifice preventing the flow of water through the trap primer;
• reducing the line pressure;
• reducing pressure in the upper chamber as result of the reducing of the line pressure;
• disengaging the diaphragm from the valve stem and opening the orifice into communication with the lower chamber as a result of reducing pressure in the upper chamber;
• causing the flow of water from the lower chamber through the bore of the valve stem;
• and
• distributing water from the port of the valve stem to the at least one trap.