Non appropriato dopo di che duramente sprinkler 1 2 diminuzione reddito sollievo
1/2 NPT V2704 BRASS 155 QR UPRIGHT STANDARD SPRAY SPRINKLER HEAD
DAYTON Sprinkler/Utility Pump: 1/2 hp HP, 115 Volt, 1 in NPT, 1 in NPT, 25 ft Suction Lift - 3YU60|3YU60 - Grainger
New Zstx-15 1/2" Npt Upright Fire Sprinkler Head With 68 Degree Standard Response For Fire Extinguishing System Protection - Pipe Fittings - AliExpress