Product Name: (J23W-160P-DN15) Stainless Steel Welded Needle Valve Socket Welding High Pressure Stop Valve 304 External Thread Union Valve Model NO.: J23W-160P-DN15 Media Temperature: Medium Temperature Media: Oil Standard: Standard Pressure: High Pressure Material: Stainless Steel Connection Mode: Welding Power: Manual Applicable Medium: Water, Steam, Oil, etc Other Standards: GB Other Specifications: 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2" Trademark: WZST Specification: DN10, DN15, DN20, DN25, DN32, DN40, DN50 Origin: China HS Code: 8481803990 Product Description 1.Product introductionNeedle valve is a kind of valve that can be precisely adjusted, with a wide range of uses, such as the cutting distance for flame cutting, and the knob for adjusting the flame temperature is the needle valve. The instrument needle valve is an important part of the instrument measuring pipeline system, which mainly includes stop valve and ball valve. Its function is to open or cut off the pipeline2.Working principleNeedle valve type can withstand greater pressure and has good sealing performance than other types of valves, so it is generally used for sealing gas or liquid medium with smaller flow and higher pressure. Needle valve and pressure gauge are the most suitable. General needle valve types are made of threaded connection. Nominal pressure: pn2.5 pn4 pn6.4 PN16 pn32mpa nominal diameter: dn5 ~ DN25 applicable medium: oil, water, gas and other non corrosive or corrosive medium applicable temperature: - 20 ºC~ + 440 ºC - 70 ºC~ - 240 ºC ≤ 540 ºC ≤ 570 ºC, and other manufacturing materials: 20#, 1Cr18Ni9Ti, 304, 316, 316L, 12Cr1MoV, etc3.Installation precautions(1).The installation position, height and direction of inlet and outlet must meet the design requirements. It should be noted that the direction of medium flow should be consistent with the direction of arrow marked on the valve body, and the connection should be firm and tight.(2).Visual inspection must be carried out before the installation of the valve, and the nameplate of the valve shall comply with the provisions of the current national standard general valve marking (GB 12220). For the valve with working pressure greater than 1.0 MPa and cut-off function on the main pipe, strength and tightness performance test shall be carried out before installation, and the valve can only be used after it is qualified. During the strength test, the test pressure shall be 1.5 times of the nominal pressure, and the duration shall not be less than 5min. The valve shell and packing shall be qualified if there is no leakage. During the tightness test, the test pressure is 1.1 times of the nominal pressure; the test duration meets the requirements of GB 50243You need to consult more detailed product informationPlease consult me