Overview: 

Needle instrument valve (also known as instrument needle valve) is a small flow control valve specially designed for precision instrument pipeline systems. Through the precise cooperation of "needle valve flap + conical valve seat", it realizes micro-regulation, precise truncation or sampling of the medium. The core adapts to the front side control of pressure gauges, flow meters, level meters and other instruments. System, as well as small-flow pipeline systems in laboratories, chemical industry, petroleum and other scenarios, can operate stably under medium and high pressure (PN≤63MPa) and wide temperature (-200℃~600℃) conditions. 

 Nominal pressure: PN2.5 PN4 PN6.4 PN16 PN32Mpa 

 Nominal diameter: DN5～DN25mm 

 Applicable media: oil, water, gas and other non-corrosive or corrosive media 

 Applicable temperature: -20℃～+440℃ -70℃～-240℃ ≤540℃ ≤570℃, etc. 

 Manufacturing materials: 20#, 1Cr18Ni9Ti, 304, 316, 316L, 12Cr1Mov, etc. 

 Connection method: thread, welding, card sleeve

Each process, each facility, and each environmental constraint has its own special requirements. Therefore, Dongyan offers a comprehensive range of products covering different performance levels, pressures, different functions and different materials.