Product detail: ZZY Self Operated Pressure Reducing Valve
Brief Introduction.
For ZZY series self-operating pressure reducing valves, its special advantage is that there is no need for any external power source, it can use the medium's flow force to realize the function of pressure regulating automatically when the medium flow through the actuator,and different plug and actuator can be selected in meet of different working conditions.as its good regulating performance,it has a widely application in petrochemical industry,power staion and light industry.
.Field of Application.
Product Name:ZZY Self Operated Pressure Reducing Valve.
Pressure Rating: 1.6/4.0/6.4 Mpa.
Nominal Diameter: DN20-200 mm.
Body Material: Steel WCB,Stainless Steel.
Valve Seat: Single Seat,Double Seat,Sleeve.
Standard flanges: DIN, ANSI, JIS.
Main Technical Parameters and Indexes of Performance.
| Nominal Diameter(mm) |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
| |
10 |
12 |
15 |
20 |
| Kv |
1.8 |
2.4 |
4.4 |
4 |
11 |
20 |
30 |
48 |
75 |
120 |
190 |
300 |
480 |
760 |
| Allowable Maximum Pressure Differential |
2.5 |
2.0 |
1.6 |
1.0 |
| Nominal Pressure |
1.6/4.0/6.4 Mpa |
| Flow Characteristics |
Quick Open |
| Allowable Minimum Pressure Differential |
0.05 Mpa |
| Pressure Regulating Range(Kpa) |
15~50 40~80 60~100 80~140 120~180
160~220 200~260 240~300 280~350 330~400
380~450 430~500 480~560 540~620 600~700
680~800 780~900 800~1000 900~2000 |
| Working Temp. |
Liqud≤140,Gas≤80,With radiator/condenser ≤350. |
| Applicable Medium |
Gas,Steam,Low Viscosity Liquid. |
Note:Pressure range can be designed upon our customers'requirement.
Main Technical Parameters and Indexes of Performance.
| Regulating Accuracy |
±8 % |
| Allowable Leakage |
Metal Seat(L/H) |
Single Seat(IV Class)≤1/10000 x rated value |
| Double Seat/Sleeve Type(II Calss )≤5x1/1000 x rated value |
Soft Seat
(ml/min) |
DN(mm) |
| 20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
| 0.15 |
0.3 |
0.45 |
0.6 |
0.9 |
1.7 |
4.0 |
6.75 |
Main External Dimensions.
| Nominal Diameter(mm) |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
| L |
1.6/4.0 Mpa |
150 |
160 |
180 |
200 |
230 |
290 |
310 |
350 |
400 |
480 |
600 |
| 6.4 Mpa |
230 |
230 |
260 |
260 |
300 |
340 |
380 |
430 |
500 |
550 |
650 |
| B |
233 |
332 |
373 |
522 |
673 |
980 |
1200 |
| H |
Pressure Regulating Range (Mpa) |
15~140 |
475 |
520 |
540 |
710 |
780 |
840 |
380 |
915 |
| 120~300 |
455 |
500 |
520 |
690 |
760 |
800 |
370 |
880 |
| 280~500 |
450 |
490 |
510 |
680 |
750 |
790 |
360 |
870 |
| 480~1000 |
445 |
480 |
670 |
740 |
780 |
350 |
860 |
| 600~1500 |
445 |
570 |
600 |
820 |
890 |
950 |
1000 |
| 1000~2500 |
445 |
570 |
600 |
820 |
890 |
950 |
1000 |
| A |
15~140 |
282 |
308 |
| 120~300 |
232 |
| 280~1000 |
196 |
196 |
282 |
| 600~2500 |
85 |
96 |
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