MD-U Gate Valve Operational Data
The gate valve should always be in either full-open or full-closed postition. Leavign the gate valve partially open or throttling through the gate valve could result in damage to the gates and seats.
1. The valve is opened by turning the handwheel counterclockwise until it stops, then backing off 1/4 turn to relieve any stress in the operating mechanism.2. The valve is closed by turning the hand wheel clockwise until it stops, then backing off 1/4 to 1/2 turn to allow the gate to seal. The required torque may increase for the last few turns if there is a pressure differential across the gate.
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2000-3000 PSI Working Pressure |
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Size |
2-1/16" |
2-9/16" |
3-1/8" |
4-1/16" |
5-1/8" |
6-3/8" |
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Anticipated Torque |
15 |
20 |
25 |
30 |
45 |
80 |
|
Maximum Torque |
30 |
40 |
60 |
80 |
130 |
235 |
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Turns to Open/Close |
12-1/3 |
15-1/8 |
18-1/8 |
23-1/4 |
27-1/2 |
33-3/4 |
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5000 PSI Working Pressure |
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|
Size |
2-1/16" |
2-9/16" |
3-1/8" |
4-1/16" |
5-1/8" |
6-3/8" |
|
Anticipated Torque |
20 |
25 |
35 |
50 |
75 |
140 |
|
Maximum Torque |
45 |
65 |
95 |
135 |
220 |
395 |
|
Turns to Open/Close |
12-1/3 |
15-1/8 |
18-1/8 |
23-1/4 |
27-1/2 |
33-3/4 |
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10,000 PSI Working Pressure |
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Size |
1-13/16" |
2-1/16" |
2-9/16" |
3-1/16" |
4-1/16" |
5-1/8" |
|
Anticipated Torque |
30 |
30 |
35 |
50 |
65 |
110 |
|
Maximum Torque |
80 |
80 |
85 |
130 |
170 |
320 |
|
Turns to Open/Close |
12-1/3 |
12-1/3 |
12-1/3 |
15-1/8 |
18-1/8 |
23-1/4 |
|
15,000 PSI Working Pressure |
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|
Size |
1-13/16" |
2-1/16" |
2-9/16" |
3-1/16" |
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Anticipated Torque |
50 |
15 |
20 |
25 |
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Maximum Torque |
125 |
30 |
40 |
60 |
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Turns to Open/Close |
12-1/3 |
12-1/3 |
15-1/8 |
18-1/8 |
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