To prevent damage from freezing during the winter, you must use the supplied drain-down key to empty the water from the internal thermostatic valve.
It fits into 45mm hole centers typically found in shower pods made by Plast-Tech, Bridgewood, and Lamplas. Static Caravan Spares caraflo v200 shower instructions
: Always flush the supply pipework before fitting the mixer to prevent debris from damaging the thermostatic cartridge. Components To prevent damage from freezing during the winter,