一.Product Introduction
Using elastic forming polytetrafluoroethylene as filler, the sealing performance of the filler is enhanced with the increase of medium pressure, and has the reverse sealing function, which is suitable for high and middle pressure gas transmission pipeline.
The opening and closing part of the liquefied gas stop valve is a plug shaped valve disc, the sealing surface is flat or conical, and the valve disc moves in a straight line along the center line of the fluid. The liquefied gas globe valve is a forced seal valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak.
二.Product Features
1.In view of the poor corrosion resistance of ordinary valves and the shortcomings of easy perforation of the shell, according to the specific characteristics of the medium, corrosion resistant steel (carbon steel with corrosion resistant alloy elements) is selected on the body material of the ammonia special valve, which is resistant to ammonia gas and gas corrosion, and the low temperature can reach -40℃ to maximize the use requirements of the working conditions.
The sealing pair structure type of ammonia globe valve adopts ball and flat type,
2.sealing automatic compensation, to achieve double insurance effect, stable sealing performance, no adhesive wear, effectively solve the problem of poor sealing performance and easy leakage of ordinary valves used in chemical pipelines.
3.The product flange with the tenon sealing structure, even in the case of pipeline
4.pressure fluctuations, to ensure the sealing of the flange is absolutely reliable.
Multistage polytetrafluoroethylene sealing material is used in the upper sealing device to form a combined seal to ensure that the valve has no medium leakage in the stuffing box during the service life, eliminating the possibility of weak sealing of the ordinary valve stuffing box, easy leakage of the medium, and even causing accidents.
三.Technical data
| Main performance parameters of J41N type PN40 steel globe valve | ||||
| Model number | PN | Working pressure/ MPa | Applicable temperature/ ℃ | Applicable media |
| J41N-40 | 40 | 4.0 | ≤150 | Non-corrosive media such as petroleum gas and air |
å››.The main shape and connection size
| J41N type PN40 steel globe valve shape and structure size (mm) | |||||||||
| DN | L | D | D1 | D2 | b | z×ød | H | D0 | Weight /KG |
| 10 | 130 | 90 | 60 | 40 | 16 | 4×ø14 | 198 | 120 | 4.5 |
| 15 | 130 | 95 | 65 | 45 | 16 | 4×ø14 | 233 | 120 | 5 |
| 20 | 150 | 105 | 75 | 55 | 16 | 4×ø14 | 275 | 140 | 7 |
| 25 | 160 | 115 | 85 | 65 | 16 | 4×ø14 | 285 | 160 | 9 |
| 32 | 180 | 135 | 100 | 78 | 18 | 4×ø18 | 302 | 160 | 12 |
| 40 | 200 | 145 | 110 | 85 | 18 | 4×ø18 | 355 | 200 | 17 |
| 50 | 230 | 160 | 125 | 100 | 20 | 4×ø18 | 373 | 240 | 24 |
| 65 | 290 | 180 | 145 | 120 | 22 | 8×ø18 | 408 | 280 | 33 |
| 80 | 310 | 195 | 160 | 135 | 22 | 8×ø18 | 436 | 320 | 44 |
| 100 | 350 | 230 | 190 | 160 | 24 | 8×ø23 | 480 | 360 | 60 |
| 125 | 400 | 270 | 220 | 188 | 28 | 8×ø25 | 558 | 400 | 89 |
| 150 | 480 | 300 | 250 | 218 | 30 | 8×ø25 | 611 | 400 | 130 |