Gauge Guard Connection Size 1/2 in Connection Type FNPT Diaphragm Material Viton Maximum Pressure 250 psi O-Ring Material Buna-N Body Material PVC Connector Material Stainless Steel Ambient Operating Temperature Range 0 Degrees to 140 Degrees F Series GGS Compatible Brand and Series Universal Gauge Port Size 1/4 in NPT Accuracy +/-3 Percent Application Highly Corrosive Fluid Lines Ultra-Pure Mounting Inline Overall Height 5.437 in Overall Length 2.625 in Overall Width 2.625 in