Markon Spa Bath Air Injector - Chrome

Markon spa bath chrome air injector.
Used by Melbourne manufacturer 'Dandy Paradise' spa baths.

24mm diameter cap, 6mm height  
Cap clips onto a 21mm diameter flange on the body. 
Suits 15mm diameter hole
Supplied with 10mm barb 90 degree elbow and tee body fittings.

Chrome is a coating applied through electrolysis to a base material such as brass or plastic.
These parts are chromed plastic