Shower station testing assembly for pressure testing plumbing

A testing assembly for pressure testing a plumbing system in a building where the building has a shower station with a bottom drain, an overflow drain, and a shower spout, the testing assembly comprising:

• a drain adapter having a hose end fitting and a bottom drain sealing element in fluid communication with the hose end fitting, the sealing element adapted to be in fluid communication with the bottom drain;
• a seal for the overflow drain for preventing outward fluid flow;
• a hose fitting on the shower spout;
• a hose removably connecting the shower spout and the drain adapter;
• wherein the drain adapter further comprises a fastener, the fastener being an externally threaded centrally located post adapted to removably engage the bottom drain to form a watertight seal between the sealing element and the bottom drain;
• and
• wherein the fastener is adapted to removably engage the bottom drain via a threaded surface centrally located in the bottom of the drain.