Cylinder flow, valve flow, throttling both ways. Nickel-plated brass / plastic, nickel-plated brass, with thumb screw or slotted as push-in, push-on, threaded type. Alu: Pressure Range: 0-10 bar. Temperature: -20 °C to +70 °C. Stainless: Pressure Range: 0-10 bar. Temperature: 0 °C to +150 °C