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      Your current location: ProductsGlobe ValveNRS Ammonia Globe Valve

      J41B NRS Ammonia Globe Valve

      Product overview

      Product model: J41B
      Nominal diameter: DN15 ~ DN300
      Nominal pressure: PN16 ~ PN25
      Applicable medium: liquid, gas, ammonia, nitrogen, hydrogen
      Applicable temperature: -10℃-150℃
      Body material: cast iron, cast steel
      Drive mode: manual, gear drive, electric, pneumatic, etc
      Design and manufacture: GB12235
      Structure length: GB12221
      Flange size: GB9113 JB79
      Pressure - temperature: GB9131
      Test - inspection: GB/T13927 JB/T9092

      J41B NRS Ammonia Globe Valve product details

      J41B NRS Ammonia Globe Valve structural characteristics and uses
       1, through the flange for the square structure, the stem rod connection. 
       2, the valve body sealing surface using ball convex shape, and the valve to line seal. 
       3, the sealing surface with Babbitt, sealing performance, long service life.


      The J41B NRS Ammonia Globe Valve produced and sold by Baigang Valve Group often uses oxygen, nitrogen, hydrogen, argon and other gases.These gases are generally stored in a special high pressure gas.When in use, the gas pressure is reduced to the range required by the experiment through the ammonia cut-off valve, and then the gas is input into the use system through other control valves.Commonly used pressure reducing valve for ammonia cut-off valve, referred to as ammonia valve.


      J41B NRS Ammonia Globe Valve performance specifications

      Nominal pressure PN (MPA)

      Test pressure PS (MPa)

      Suitable media

      Applicable temperature (℃)

      2.5

      3.8

      Ammonia, 
      ammonia and other 
      NH3

      Babbitt alloy 
       -40 ℃ 
      + 150 ℃

      PTFE 
      -40 ℃ 
      +200 ℃

      4.0

      6.4


      J41B NRS Ammonia Globe Valve main size and weight:

      DN (mm)

      Size (mm)

      L

      D

      D1

      D2

      D4

      b

      f

      f1

      Z-φd

      turn off

      open

      D3

      10

      130

      90

      60

      40

      35

      16

      2

      4

      4-φ14

      165

      185

      110

      15

      130

      95

      65

      45

      40

      16

      2

      4

      4-φ14

      165

      185

      110

      20

      150

      105

      75

      55

      51

      18

      2

      4

      4-φ14

      170

      200

      120

      25

      160

      115

      85

      65

      58

      18

      2

      4

      4-φ14

      197

      210

      120

      32

      180

      135

      100

      78

      66

      20

      2

      4

      4-φ18

      199

      213

      140

      40

      200

      145

      110

      85

      76

      20

      3

      4

      4-φ18

      248

      264

      160

      50

      230

      160

      125

      100

      88

      22

      3

      4

      4-φ18

      265

      295

      180

      65

      290

      180

      145

      120

      110

      24

      3

      4

      8-φ18

      310

      349

      220

      80

      310

      195

      160

      135

      121

      26

      3

      4

      8-φ18

      340

      357

      240

      100

      350

      230

      190

      160

      150

      30

      3

      4.5

      8-φ23

      380

      413

      280

      125

      400

      270

      220

      188

      176

      32

      3

      4.5

      8-φ25

      430

      451

      320

      150

      480

      300

      250

      218

      204

      32

      3

      4.5

      8-φ25

      505

      492

      360

      200

      600

      360

      310

      278

      260

      34

      3

      4.5

      12-φ25

      550

      806

      400

      250

      650

      425

      370

      335

      31

      36

      3

      4.5

      12-φ30

      730

      880

      450

      300

      750

      485

      430

      390

      364

      40

      3

      4.5

      16-φ30

      -

      995

      550


      J41B NRS Ammonia Globe Valve appearance and working principle

       Ammonia valve high pressure chamber and the cylinder connection, low pressure chamber for gas exports, and access to the use of the system. Indication of high pressure gauge is the pressure of gas stored in the cylinder. Low pressure gauge outlet pressure can be controlled by adjusting screw. 
       Open the cylinder main switch when using, then turn the low pressure gauge pressure adjusting screw clockwise to compress the main spring and drive the diaphragm, spring pad and ejector to open the valve. Such imports of high-pressure gas from the high-pressure chamber after throttling decompression into the low-pressure chamber, and through the exit leading to the working system. Turn the adjusting screw to change the opening height of the valve to regulate the passage of high-pressure gas and achieve the desired pressure value. 
       Ammonia cut-off valves are equipped with safety valves. It is to protect the ammonia valve and make it safe to use the device, but also the ammonia valve failure signal device. If due to the valve pad, valve damage or for other reasons, resulting in the pressure on the outlet and rise above a certain allowable value, the safety valve will automatically open the exhaust.

      Fifth, the use of
       (1) according to the different requirements of use, ammonia valve has many specifications. Most of the highest import pressure, the minimum import pressure of not less than 2.5 times the outlet pressure. Export pressure specifications more generally, the maximum outlet pressure.   
       (2) Ammonia valve should be installed to determine whether the connection specifications consistent with the use of the system connector. Ammonia globe valve with hemispherical connection, by tightening the nut so that the two completely match. Therefore, the use of the two hemispherical surfaces should be kept clean to ensure a good airtight effect. Use high-pressure gas to blow off the dust before installation. If necessary, PTFE and other materials can also be used for gaskets. 
       (3) ammonia valve should be prohibited from contact with grease, so as to avoid fire accidents. 
       (4) stop working, the relief valve should be more than air net, and then loosen the adjustment screw to prevent long-term compression of the elastic deformation. 
       (5) Ammonia stop valve should be avoided impact vibration, not with corrosive substances in contact.



      Reminder:

      All text, data and pictures in this article are for reference only.To see more details of the J41B NRS Ammonia Globe Valve performance parameters, structural dimension parameters, pricing, etc., or to request high quality printing samples, please Contact us.

      +86-021-57278881
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