National Advisory Hotline
+86-18752587151The product description
The sealing surface of ammonia stop valve is babbitt alloy, tetrafluoron, nylon and so on. Long service life. Is installed in the refrigeration system equipment or pipeline, to connect and cut off the refrigerant flow channel, in the process of use in the temperature range change environment can naturally achieve chemical treatment performance. Suitable for opening and closing of ammonia, ammonia liquid medium and liquefied gas pipeline with temperature of -40~+150 degrees Celsius. Mainly suitable for refrigeration, refrigeration, chemical, petroleum, food, smelting, liquefied gas and other units.
Working principle:
The opening and closing parts of J44B Angle ammonia globe valve are plug shaped disc, the sealing surface is flat or conical, and the disc moves in a straight line along the center line of the fluid. Stem movement form, there are lifting rod type (stem lifting, handwheel not lifting), there are lifting rotary rod type (hand wheel or stem rotating lifting together, nut in the valve body).
Globe valve is only suitable for full open and full closed, not allowed for adjustment and throttling.
Product features:
The middle flange is square structure, and the valve stem is connected by inter-rod.
The sealing surface of the valve body is ball convex, and the valve foot is sealed by line.
Babbitt alloy sealing surface, good sealing performance, long service life.
Main parts and materials
Part name | Valve body, valve cover | The seat | Packing | Packing gland, stem | Gasket |
AJ44B/F-25C | Cast steel | Babbitt/ptfe | Polytetrafluoroethylene | Carbon steel | Teflon |
AJ44B/F-25P | Stainless steel | Babbitt/ptfe | Polytetrafluoroethylene | Stainless steel | Teflon |
AJ44B/F-25 | Gray cast iron | Babbitt/ptfe | Polytetrafluoroethylene | Carbon steel | Teflon |
The product specification
Nominal pressure | Test pressure | Applicable medium | Suitable temperature | |
PN(MPa) | PS(MPa) | (℃) | ||
2.5 | 3.8 | Ammonia, ammonia liquid NH3 | Babbitt alloy -40℃+150℃ | Four fluorine - 40 ℃ to + 200 ℃ |
4.0 | 6.4 |
Main dimensions AJ44B-25 AJ44B/F-25P AJ44B/F-25C
Nominal diameter Size
DN(mm) | L | D | D1 | D2 | D4 | b | f | f1 | Z-φd | Close | Open | D3 |
10 | 65 | 90 | 60 | 40 | 35 | 16 | 2 | 4 | 4-φ14 | 165 | 185 | 110 |
15 | 65 | 95 | 65 | 45 | 40 | 16 | 2 | 4 | 4-φ14 | 165 | 185 | 110 |
20 | 75 | 105 | 75 | 55 | 51 | 18 | 2 | 4 | 4-φ14 | 170 | 200 | 120 |
25 | 80 | 115 | 85 | 65 | 58 | 18 | 2 | 4 | 4-φ14 | 197 | 210 | 120 |
32 | 90 | 135 | 100 | 78 | 66 | 20 | 3 | 4 | 4-φ18 | 199 | 213 | 140 |
40 | 100 | 145 | 110 | 85 | 76 | 20 | 3 | 4 | 4-φ18 | 248 | 264 | 160 |
50 | 115 | 160 | 125 | 100 | 88 | 22 | 3 | 4 | 4-φ18 | 265 | 295 | 180 |
65 | 145 | 180 | 145 | 120 | 110 | 24 | 3 | 4 | 8-φ18 | 310 | 349 | 220 |
80 | 155 | 195 | 160 | 135 | 121 | 26 | 3 | 4 | 8-φ18 | 340 | 357 | 240 |
100 | 175 | 230 | 190 | 160 | 150 | 30 | 3 | 4.5 | 8-φ23 | 380 | 413 | 280 |
125 | 200 | 270 | 220 | 188 | 176 | 32 | 3 | 4.5 | 8-φ25 | 430 | 451 | 320 |
150 | 240 | 300 | 250 | 218 | 204 | 32 | 3 | 4.5 | 8-φ25 | 505 | 492 | 360 |
200 | 300 | 360 | 310 | 278 | 260 | 34 | 3 | 4.5 | 12-φ25 | 550 | 806 | 400 |
250 | 325 | 425 | 370 | 335 | 31 | 36 | 3 | 4.5 | 12-φ30 | 730 | 880 | 450 |
300 | 375 | 485 | 430 | 390 | 364 | 40 | 3 | 4.5 | 16-φ30 | 0 | 995 | 550 |
What are the common faults of valve special motors
2021-07-22Principles of valve selection in the petroleum and ch…
2021-07-22Application and principle of speed control valve
2021-07-22Types and working principles of gate valves
2021-07-22Do you know everything about the installation of chec…
2021-07-22Why is the use of gate valves forbidden in oxygen pip…
2021-07-22Introduce the working principle of high pressure angl…
2021-07-22Flat gate valve use structure description characteris…
2021-07-22