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Oxygen special globe valve
Model: YJ41W
Nominal diameter: DN15 ~ 400mm
Nominal pressure: PN1.6 ~ 4.0MPa
Temperature: room temperature
Medium: Oxygen
Design and manufacture: GB12235-89
Length of the structure: GB12221-89
Flange size: B / G79-94
Examination And test: GB13927

Oxygen special globe valve is a forced-sealed valve, so the valve is closed, you must apply pressure to the valve to force the sealing surface does not leak. When the medium from the bottom of the valve into the valve six, the operating force needed to overcome the resistance is the stem and packing friction and the pressure generated by the media thrust, off the valve force than the valve opening force, so the valve The diameter of the rod should be large, otherwise it will happen to the top of the valve stem failure. In recent years, from the self-sealing valve appears, the flange of the media cut off the valve to change from the top of the valve into the valve chamber, then under medium pressure, the valve closing force is small, and open the valve force, valve The diameter of the rod can be reduced accordingly. At the same time, in the medium, this form of valve is also more stringent.
 

1, the oxygen valve is open, the valve opening height, 25% to 30% of the nominal diameter, the flow has reached its maximum, indicating that the valve has reached the fully open position. Therefore, the full-stop position of the valve, valve stroke should be determined.

2, small work schedule, opening and closing time is short. 
 3, good sealing, friction between the sealing surface is small, longer life expectancy.
 

Oxygen globe valve main performance and use of:

model Nominal pressure Shell test pressure Ps (Mpa) Gas seal test Applicable temperature (℃) Suitable media
water gas
YJ41W-25P 
       YJ41W-40P 		2.5 3.8 2.5 2.5 Room temperature oxygen


 Oxygen globe valve main dimensions:

YJ41W-40P, YJ41W-40R Weight 
       (kg)
DN (mm) Size (mm)
L D D1 D2 D6 b f fz z-фd Dz i H D0
15 130 95 65 45 40 16 2 4 4-ф14 82 10 202 100 5
20 150 105 75 55 51 16 2 4 4-ф14 95 13 225 100 6.5
25 160 115 85 65 58 16 2 4 4-ф14 98 15 236 125 7
32 190 135 100 78 66 18 2 4 4-ф18 120 28 312 180 13.5
40 200 145 110 85 76 18 3 4 4-ф18 135 20 328 160 16
50 230 160 125 100 88 20 3 4 4-ф18 160 25 450 320 32
65 290 180 145 120 110 22 3 4 8-ф18 180 30 530 360 45
80 310 195 160 135 121 22 3 4 8-ф18 195 32 560 400 60
100 350 230 190 160 150 24 3 4.5 8-ф23 230 40 618 450 80
125 400 270 220 188 176 28 3 4.5 8-ф25 275 42 675 450 105
150 480 300 250 218 204 30 3 4.5 8-ф25 330 50 743 560 134
200 600 375 320 282 260 38 3 4.5 12-ф30 405 55 850 640 266


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