Ammonia Globe Valve

Product overview

Product model: J41B

Nominal diameter: DN10~150mm

Nominal pressure: PN1.6-16.0MPa

Applicable temperature: ≤550℃

Main material: 25, WCB, chromium-nickel alloy, chromium-nickel-molybdenum steel, chromium-molybdenum steel

Applicable medium: water, oil, steam, nitric acid, acetic acid, etc.

Design and manufacture: GB/T12235

Structure length: GB/T12221

Connecting flange: JB/T79.2

Pressure temperature: JB/T74

Test: JB/T9092


Product Detail

Product description

The ammonia stop valve is a special valve for non-corrosive gas ammonia and liquid ammonia. The liquid ammonia stop valve is specially designed for ammonia and fuel gas pipelines or devices. Attention has been paid to fire protection requirements on the structure. The packing is made of polytetrafluoroethylene, and the sealing surface of the ammonia gas stop valve is Babbitt alloy seal, the seal is reliable, and the concealed bar design is absolutely no leakage. The sealing material adopts PTFE or nylon to the body material of the valve body, which is a soft seal. It is suitable for ammonia gas and liquefied petroleum gas pipeline system, as an opening and closing device, and also suitable for other pipelines whose temperature is ≤80℃.


Structural features

1. The product structure is reasonable, the sealing is reliable, the performance is excellent, and the appearance is beautiful.

2. The sealing surface is welded with Co-based cemented carbide, which has good wear resistance, corrosion resistance, scratch resistance and long service life.

3. After quenching and tempering and surface nitriding treatment, the valve stem has good corrosion resistance and scratch resistance.

4. The valve is equipped with an inverted sealing structure, and the sealing is reliable.

5. The material and flange size of the parts can be reasonably selected according to actual working conditions or user requirements to meet various engineering needs.


天然气截止阀(图1)


Main external connection size

DN(mm) L D D1 K D2 b f1 f2 Z-d H W0
J41B-25C、J41B-25Q、J41B-25K
10 130 90 60 40 35 16 2 4 4-14 196 120
15 130 95 65 45 40 16 2 4 4-14 196 120
20 150 105 75 58 51 18 2 4 4-14 196 120
25 160 115 85 68 58 18 2 d 4-14 201 120
32 180 140 100 78 66 18 2 4 4-18 208 120
40 200 150 110 88 76 18 3 d 4-18 248 160
50 230 165 125 102 88 20 3 4 4-18 248 160
65 290 185 145 122 110 22 3 4 8-18 321 240
80 310 200 160 138 121 24 3 4 8-18 325 240
100 350 235 190 162 150 24 3 4.5 8-22 371 280
125 400 270 220 188 176 26 3 4.5 8-26 400 320
150 480 300 250 218 204 28 3 4.5 8-26 432 320
DN(mm) L D D1 K D2 b f1 f2 Z-d H W0
J41B-40C、J41B-40Q、J41B-40K
15 130 95 65 45 40 16 2 4 4-14 165 110
20 150 105 75 58 51 18 2 4 4-14 170 120
25 160 115 85 68 58 18 2 4 4-14 195 120
32 180 140 100 78 66 18 2 4 4-18 200 140
40 200 150 110 88 76 18 3 4 4-18 247 160
50 230 165 125 102 88 20 3 4 4-18 265 180
65 290 185 145 122 110 22 3 4 8-18 310 220
80 310 200 160 138 121 24 3 4 8-18 340 240
100 350 235 190 162 150 24 3 4.5 8-22 380 280

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