Service:Compatible gases and liquids.Wetted Materials:Gage Body: Aluminum or 316 SS; Piston: Aluminum or 316 SS; Spring: 302 SS; Seals: Buna-N (standard); PTFE, Ceramic Magnet; Dial Case: Nylon 6 30% glass filled gage case.Window:Acrylic.Accuracy:±2% FS.Pressure Limits:3000 psi (206 bar) for aluminum body; 6000 psi (413 bar) for SS body.Size:2.5″ (63 mm) or 4.5″ (115 mm).Mounting Orientation:Mount in any position.Process Connections:1/4″ female NPT end connections standard; 1/4″ female NPT back or bottom connections available. All styles available with 1/4″ BSP.Weight:Aluminum: 2.5″ 0.88 lb (399 g); 4.5″ 1.35 lbs (612 g); Stainless Steel: 2.5″ 1.75 lbs (794 g); 4.5″ 2.3 lbs (1.04 kg). 1-9/32