Instrumentation threaded connectors

Valve manifolds integrate several valves together in a common, single body. They are mounted in control and measuring equipment systems directly before pressure gauges or pressure transmitters to protect these instruments against damage.

Needle valves (depending on the type of valve and stem applied) are used to control flow rates, to open or close the flow completely and for metering media. As opposed to ball valves, the needle valve is opened and closed by turning a knob many times. The process is gradual, no sudden rise or drop of pressure occurs, which is critical especially for high pressure gas applications and high flow velocity. The needle valves, with a special regulating stem in particular, can be used to control the flow rate in a system.