Viega 20828 3" x 3" ProPress XL-C Copper Male Thread Adapter, Press x MPT MPU2-960 Differential is adjusted by means
Baker’s notes & crumb story
Description
Viega 20828 3" x 3" ProPress XL C Copper Male Thread Adapter, Press x MPT MPU2 960 Differential is adjusted by means Differential is adjusted by means of a dial located inside the case interrupted and intermittent ignition burner used in boilers