For ammonia ambient pressure test

Features: 1) Size: available in size 2.5" 2) Pressure range: -30"Hg-0-150psi, -30"Hg-0-300psi, 0-60psi, 0-160psi, 0-400psi Inner packing: 1pc/box Outer packing: 25pcs or 50pcs/carton ;