Case

2.5” (63mm): Plastic, colour coded, blue for low pressure and red for high pressure,

4” (100mm), 6” (150mm): Steel, painted black

 Lens

2.5” (63mm): Plexiglass, threaded

4” (100mm), 6” (150mm): Glass

 Ring

2.5” (63mm): SS, crimped,

4” (100mm): Brass, polished,

6” (150mm): Steel, painted black

 Connection1/8” NPT or 1/4” NPT standard Restrictor ScrewStandard Recalibrator ScrewStandard Bourdon Tube

2.5” (63mm): Phosphor bronze, vibration free (flutterless movement)

4” (100mm), 6” (150mm): Phosphor bronze

 PointerAluminum, anodized black Welding#50 tin solder Over-Pressure Limit25% of full scale value Scalepsi/°F (R-12/R-22/R-502) Working PressureMaximum 75% of full scale valueAmbient/Process Temperature-40°F to 158°F (-40°C to 70°C) Accuracy

2.5” (63mm): ±2% of full scale

4” (100mm), 6” (150mm): ±1% ANSI/ASME Grade 1A

 Enclosure RatingIP52