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  • J41W Flanged Needle Valve

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J41W Flanged Needle Valve

J41W Flanged Needle Valve

  • Model:J41W-16P/J41W-25P/J41W-40P/J41W-64P/J41W-100P/J41W-160P
  • Specification:DN10-DN25
  • Temperature:-29℃-538℃.
  • Medium:water, steam, oil products
  • Pressure:PN20.0-PN64.0
  • Connection method:flange
  • Driving method: Manual
  • Material:stainless steel 304316, cast steel
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J41W Flanged Needle ValveOverview

The J41W flange-type needle valve is a small-bore instrument valve featuring flange connections, operated by rotating the handwheel to drive the stem and needle-type disc for precise opening and closing. Its sealing surface is directly machined from the valve body material (“W” type), forming a metal-to-metal hard seal. This valve is primarily used for root isolation of pressure gauges and transmitters, pipeline sampling, flow regulation, and draining/venting. It serves as a critical instrument accessory in industries such as petroleum, chemical, power generation, and pharmaceuticals, ensuring safe isolation and precise control of measurement systems. The flange connection provides stable installation and reliable sealing, suitable for medium to high-pressure and larger diameter instrument piping systems.

Product Drawingof J41W Flanged Needle Valve

J41W Flanged Needle ValveCharacteristic

Flange connection for stability and reliability: Standard flange connection offers high strength and reliable sealing, suitable for medium to high-pressure and vibrating applications.

Needle-type disc for precise regulation: The needle disc cooperates with the seat to enable precise adjustment and control of small flow rates with excellent regulation performance.

Metal-to-metal hard seal for reliability: Sealing surfaces are directly machined from stainless steel, forming a wear-resistant metal-to-metal hard seal with long service life.

All-stainless steel corrosion resistance: Body and main components are made of 304/316 stainless steel, providing excellent corrosion resistance for various corrosive media.

High-pressure design: Robust body structure withstands high working pressures, suitable for high-pressure applications.

Reliable stem sealing: Multi-layer packing or PTFE sealing with gland prevents external leakage.

Compact structure for easy installation: Compared to threaded connections, flange connections are easier to disassemble and maintain, suitable for applications requiring frequent inspection.

J41W Flanged Needle Valvestructure principle

Structure Diagramof J41W Flanged Needle Valve

Component name and material

序号No零件名称Part name材质Material
1法兰Flange20# A105 SS304 SS304L SS316 SS316L
2阀体Body20# A105 SS304 SS304L SS316 SS316L
3阀盖垫片Bonnet gasket紫铜PTFE Red copper PTFE
4阀盖Bonnet20# A105 SS304 SS304L SS316 SS316L
5填料垫Gland followerPTFE柔性石墨金属盘根 PTFE Flexible graphite Metal packing
6填料PackingPTFE柔性石墨 PTFE Flexible graphite
7填料压盖gland20# A105 SS304 SS304L SS316 SS316L
8锁紧螺母Lock nut20# A105 SS304 SS304L SS316 SS316L
9阀杆Stem20# A105 SS304 SS304L SS316 SS316L
10手轮Handwheel20# A105 SS304 SS304L SS316 SS316L
11带帽螺母Cap nut20# A105 SS304 SS304L SS316 SS316L


J41W Flanged Needle Valvetechnology parameter

Performance Specification Sheet

公称压力 (MPa) Nominal Pressure (MPa)试验压力 (MPa) Test Pressure (MPa)工作压力 (MPa) Working Pressure (MPa)工作温度 (℃) Working Temperature (℃)适用介质 Applicable Medium
壳体 (液) Casing (liquid)密封 (气) Seal (gas)
1.62.40.61.6P≤540℃液化石油气、水、酸、蒸汽、油品等 Liquefied petroleum gas,water,acid,steam,oil products,etc.
4.06.00.64.0
16.024.417.616.0
32.048.035.232.0C≤425℃


J41W Flanged Needle Valvestandard size

J41W Flanged Needle Valve Outline Drawing

Outline dimension table

型号model公称通径 DNNominal diameterACFN-øLHD0
J43W/HDN10906041144-ø141309060
J43W/HDN15956546144-ø141329060
J43W/HDN201057556164-ø1415010580
J43W/HDN251158565164-ø14150120100