Pressure Gauge Sand Cartridge Filters

Aussie Gold  Pressure Gauge                                                6 Style Types

Quality 50mm, non corrosive casing bottom mount pressure gauge, variously branded, may come with dual scales, 0-250 Kpa (35 some 50 psi) 

 pools nominally run 70-100 Kpa unless solar is added to head or large pump on spa applications

solid 1/4" BSP tapered thread, fits most applications (actually measures 13mm)