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Model J61/13 instrument root valve is an external thread three-way instrument needle valve. Its forged valve body is precision machined. The opening and closing of pipelines, pressure sampling, pressure relief and fine flow regulation are realized via sealing between the conical needle and valve seat. Featuring three flow passages in one valve, it fulfills multiple functions including sampling, blowdown and pressure monitoring.
It is widely matched with pressure gauges, pressure transmitters and differential pressure instruments. Commonly applied to high-pressure instrument piping in power, petroleum, chemical, metallurgical, boiler and other industries, it serves as an indispensable pipeline control component in automatic control systems.