● Dial: 4.5" (115mm) white aluminum with black and red markings</br> ● Safety glass window, adjustable pointer, dry and fillable</br> ● Bourdon tube: 316L stainless steel, less than 1000PSI, C-type, more than 1500PSI, Helical type</br> ● Pressure element: 316L stainless steel; <100bar : C-type; ≥100bar : Helical type</br> ● Window: clear non-splintering plastic (PMMA), retained by internal threaded bezel</br> ● ASME B40,100 and EN837-1 compliant

● Dial size 2.5" (63mm) or 4" (100mm) dial has a blue and red colored case for easy identification</br> ● Dial scale (psi / °F)</br> ● Chlorofulorocarbon (CFC) temperature scales, refrigerant R-12, R-22, R-502, R-134A, R-410A</br> ● Brass or stainless steel internals</br> ● ASME B40.100 and EN837-1 compliant

● Suitable for air and water media</br> ● Corrosion resistant case</br> ● Dual scales (psi/kpa, pai/bar, psi/kg/c㎡) and single scale (psi)</br> ● Approved by Factory Mutual (FM) and listed by Underwriter</br> ● Laboratory (UL)</br> ● Internal pointer over-travel stop</br> ● ASME B40.100 compliant

● 2.5" dial size</br> ● Copper alloy bourdon tube and swivel connection</br> ● Black plastic case</br> ● 3/4" swivel connection, top mount</br> ● Plastic lens</br> ● Accuracy: 3/2/3% per ASME B40.1 Grade B</br> ● White scale with black graduations and numerals</br> ● Range: 0-300 psi