- Standard case on 2-1/2 inch size is black painted steel (optional Stainless steel), and Stainless steel on 4 inch case
- Phosphor bronze diaphragm capsules are coupled with precision all-brass movements to provide extremely accurate indication
- 25-206 & 25-216 are low pressure diaphragm OEM-Type gauges; they feature a black ABS case and a Copper Beryllium Alloy (CuBe) diaphragm capsule coupled with Cu-Alloy movement for extremely low pressure applications
- 25-200 and 25-210 come standard with 2X to 10X overpressure protection based on full scale
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