Western® Semi Automatic Medical Liquid Manifold Cylinder is specially designed for healthcare facilities requiring an emergency back-up gas supply. Manifold can accommodate 3 cylinders. It has 20 - 160 PSIG adjustable regulator and 1/2" male NPT outlet valve. Manifold with a maximum inlet pressure of 3000 PSIG has 1/2" plugged tee for low reserve pressure switch.