AM3 Regulating Main valve DN20-100
Technical parameters
- Nominal pressure: 2.8MPa
- Applicable temperature:-50℃ ~+120°c
- Test pressure:4.2MPa
- Applicable medium: ammonia, fluorine, propane,etc.
Characteristics
- Flow regulating valves,servo-operated by different pilot valves screwed-in the main valve or mounted in an external pilot line.
- The AM3 are designed to use with ammonia and other common fluorinated refrigerants, for liquid, suction,discharge or defrosting lines,and they have three ports, P,S1 and s2, to screw-in two or three pilot valves.
- The relations between the ports where it is possible to screw-in the pilot valves on the AM3, are following:
1、The main valve will be open, if just one of the pilot valves connectedis closed, and it will be open if both pilots valves are open at thesame time.
2、The pilot valve screwed-in P, is connected in parallel with the pilot valves in ports $1 &S2, so the AM3 valve will be open if the pilotin Pis open,irrespective if the $1 or s2 pilot valves, are open orclosed,and the main valve will be closed if the pilot in P is closedand at least one of the pilot valves in s1 or S2, are closed at thesame time.
- The degree of opening of AM3 valves is function of the differential pressure between the inlet and outlet, so if the pressure difference is △p = 0.3 bar, the main valve will be fully open,and if it is Ap = 0.2-0.3 bar, the degree of opening will be correspondingly proportional to Ap.
Name | Type | Size(mm) | Kv | Cv | |||||||
DN | ΦD | Φd | A | H | L | L1 | |||||
AM3 Main Valves Type |
AM1 20 | 3/4″ | 20 | 27 | 20 | 65 | 150 | 190 | 125 | 6 | 7 |
AM1 25 | 1″ | 25 | 34 | 25 | 65 | 150 | 190 | 125 | 9 | 10.5 | |
AM1 32 | 1 1/4″ | 32 | 42 | 32 | 70 | 175 | 245 | 170 | 16 | 19 | |
AM1 40 | 1 1/2″ | 40 | 48 | 40 | 70 | 175 | 245 | 170 | 30 | 35 | |
AM1 50 | 2 | 50 | 60 | 50 | 70 | 180 | 255 | 180 | 40 | 47 | |
AM1 65 | 2 1/2″ | 65 | 76 | 65 | 85 | 205 | 295 | 220 | 75 | 88 | |
AM1 80 | 3″ | 80 | 89 | 80 | 95 | 225 | 330 | 250 | 140 | 164 | |
AM1 100 | 4″ | 100 | 108 | 100 | 125 | 260 | 415 | 330 | 200 | 234 |