Model BR501D Low Pressure Diaphragm Gauge
The Blue Ribbon Model BR501D Low Pressure Diaphragm Gauges is a family of dry, non-fillable, diaphragm based pressure gauges. The Model BR501D is designed to provide reliable economical measurements of pressures below 10 PSI and are suitable for all media. BR501D Low Pressure Diaphragm Gauges are available in either brass and stainless steel construction to suit virtually any application. Available with 1/4" bottom or back connections in dial sizes 2 1/2", 4" and 4 1/2"