Description 0-30 inch Hg range 3.5 inch diameter face Threaded for 1/4 inch NPT Painted steel back 17918 52ac 53ac Hamby Dairy Supply offers 3 options for gauges; 7126 - 2.5 inch for portables (glycerin filled) 7135 - 3.5 inch for vacuum line mount 7145 - 4.5 inch for vacuum line mount Mounting adapters - see link below; ReducerBushing.5x.25 - Reducer Bushing 1/2MPT to 1/4 FPT 7009-3270-050 - Metal Mount with Female NPT for vacuum gauge, drain or pulsator. Fits 2.0 inch PVC 01/26
