Needle Valves is a type of valve with a small port and a threaded, needle-shaped plunger. It allows precise regulation of flow, They are also usually used in flow-metering applications, especially when a constant, calibrated, flow rate must be maintained for a certain duration, such as the idle fuel flow in a carburetor, steam in the pipe from the power plant, as well as to provide shut off for the pressure gauge or on applicators in many industries. 1. Needle Valve Features& Applications: Accurate& Precise control flow rate and pressure. Provide reliable cutoff. Precise adjustment of flow, bearing resistance, and pressure regulation. It also can be used in pump start, turbine by-pass, flow discharge, air regulation, and Reservoir inlet. Small Size. 3. Needle Valve General Data: Pressure Range: 5000Psi-15000Psi(344Bar-10343Bar) Working temperatures: -54°C-649°C (-65°F-1200°F) Size:1/8''-1''(NPT), DN6-DN20, Connection: Dual Ferrules, Flange, Thread, Welding. Application: Liquid or Gas, Steam, Water Body Material:316