Gas Powered Stop Valves RAK-W Series
Technical Parameter
Nominal pressure: 2.8MPa
Applicable temperature:-50℃ ~ +120 ℃
Test pressure: 4.2MPa
Applicable medium: ammonia,fluorine.propane,etc.
|
Name |
Model |
Size (mm) |
|||||||
|
DN |
φD |
φd |
A |
H |
L |
L1 |
|||
|
RAK-W Series Pneumatic Stop Valve |
RAK-W 25 |
1” |
25 |
34 |
25 |
65 |
190 |
190 |
125 |
|
RAK-W 32 |
1¼” |
32 |
42 |
32 |
70 |
215 |
245 |
170 |
|
|
RAK-W 40 |
1½” |
40 |
48 |
40 |
70 |
215 |
245 |
170 |
|
|
RAK-W 50 |
2” |
50 |
60 |
50 |
70 |
220 |
255 |
180 |
|
|
RAK-W 65 |
2½” |
65 |
76 |
65 |
85 |
245 |
295 |
220 |
|
|
RAK-W 80 |
3” |
80 |
89 |
80 |
95 |
265 |
330 |
250 |
|
|
RAK-W 100 |
4” |
100 |
108 |
100 |
125 |
300 |
415 |
330 |
|
Characteristics
● RAK-W valves are designed to use with ammonia and other common fluorinated refrigerants, for use in suction lines or any application that need a valve normally open with automatic closing for brief periods.
● RAK-W valves can operate with △p=0 and in any position, but when the valve are closed or opening,there is a bleed of gas around the piston and a small bore to allow open the valve when the high pressure gas stream is closed .Nevertheless if this small bleed cannot occurs and you need a valve without bleed around the piston you must use our RACK normally closed valve, or the option RAK-2WS type, but with this last type you need to include two solenoid pilots, one to shut of the hot gas inlet flow, and the second one to empty the camera over the piston.and to avoid open again the valve.
● The inlet of hot gas to solenoid pilot is through a nut & nipple connection of 3/8’ brazed or welded to nipple.
For more details and different sizes, please contact us.
