Needle valve manifold (instrument manifold)

Needle Valve Manifold and Instrument Manifold Models: 1151 / EF-2 / 1151T / SS-M2F8 / J23SA / QFF3 / WF-3 / WF-1 / WF-2 / SS-M5F8 / SF-2B / QFF3 / QF-05 / 3051 A needle valve manifold (instrument manifold) is a combined valve assembly that integrates multiple shut-off valves or pressure tapping valves into a single unit, specifically designed for use with field instruments such as differential pressure transmitters and pressure transmitters. Its core functions include pressure transmission, connection, shut-off, balancing, and venting/draining between the instrument and the process pipeline. The manifold typically consists of two, three, or five individual valves (e.g., high-pressure valve, low-pressure valve, balancing valve, drain valve) integrated into a single valve body with precision-engineered internal flow paths. Common types include two-valve manifolds, three-valve manifolds, and five-valve manifolds:Two-valve manifold: Consists of two shut-off valves (high-pressure side and low-pressure side) and is used for simple pressure measurement.Three-valve manifold: Adds a balancing valve to the two-valve design. It is used for installation, zero adjustment, or removal of differential pressure transmitters, effectively preventing sensor damage due to single-side overpressure.Five-valve manifold: Adds two drain/test valves to the three-valve design, offering more comprehensive functionality for draining, flushing, and calibration.Compared with traditional discrete single valves, manifolds greatly simplify piping connections and reduce potential leak points. They are compact, occupy less space, and offer good rigidity and vibration resistance. The valve body is typically made of stainless steel (304/316L), and sealing options include PTFE or graphite. The needle valve manifolds produced by Kaivex Valve Group are widely used in industries such as petroleum, chemical, electric power, and metallurgy, and are installed directly between the transmitter and the flange or impulse line.