Electric Double Seat Control Valve-Classic ZAZN Type
Product features:
·ZAZN series double seat control valve with DKZ electric actuator, easy for installation and maintenance, economic and applicable.
·If the user's request about the accuracy is not too high, could choose ZAZN series double seat control valve.
·Double -seat control valve can withstand higher pressure,so it's a good choice when the valve pressure difference is large.
The main parameters:
Body material: cast iron, cast steel, cast stainless steel, etc.
Pressure rating: 1.6Mpa 4.0Mpa 6.4Mpa
Connection: flange connection according to JB79-59
Temperature range: room temperature type -20-230 ℃ thermal fin type-60-450 ℃
Action form: electrical power on or off
Flow characteristics: Equal percentage, linear
Leakage: 0.5% × rated Kv
The main parameters of the actuator
·Input, output signal: 4 ~ 20mA DC or 0 ~ 10mA DC;
Input channel resistance: 250 ohms;
· The basic error: ± 2.5%;
· Dead: ≤3% (could adjust according to system requirements);
Power supply voltage: single phase 220V 50Hz;
· Working temperature: -10 ℃ ~ + 55 ℃
· Humidity: ≤95%, ambient air does not contain corrosive properties;
BELLAZN, ZAZN double-seat valve Specification table
| Nominal diameter DN | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| Rated flow coefficient Kv | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | 1000 | 1600 |
| Nominal pressure PN MPa | 1.6 4 6.4 | |||||||||||
| match DKJ actuator | DKZ-4200 | DKZ-4300 | DKZ-5400 | DKZ-5500 | DKZ-5600 | |||||||
| match BELL actuator | BELL-A+Z64 | BELL-A+Z160 | ||||||||||
| Rated travel mm | 16 | 25 | 40 | 60 | 100 | |||||||
| Flow characteristic | equal percentage linear | |||||||||||
| Action mode | volt on volt off | |||||||||||
| Temperature range | Normal temperature: -20 — +200 degree thermal fin type:-60~450degree | |||||||||||
Note: The large-diameter double seat control valve can be customized according to user requirements.
About descriptions of actuator,please see "Valve Actuator" section.
Size chart (with BELL straight stroke electric actuator)
| Diameter DN | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | |
| L | 1.6MPa | 185 | 200 | 220 | 250 | 275 | 305 | 350 | 410 | 450 | 550 | 670 | 770 | note |
| 4.0MPa | 190 | 210 | 230 | 255 | 285 | 310 | 355 | 425 | 460 | 560 | 740 | 803 | ||
| 6.4MPa | 205 | 220 | 240 | 265 | 295 | 325 | 375 | 435 | 475 | 570 | 750 | 819 | ||
| H | Normal temperature | 690 | 693 | 713 | 718 | 819 | 829 | 841 | 918 | 928 | 970 | 1455 | 1531 | |
| thermal Fin type | 796 | 829 | 841 | 846 | 982 | 992 | 1004 | 1115 | 1125 | 1167 | 1757 | 1777 | ||
| B | 10596 | 596 | 596 | 596 | 596 | 596 | 596 | 596 | 596 | 596 | 596 | 596 | ||
| C | 232 | 232 | 232 | 232 | 232 | 232 | 232 | 232 | 232 | 232 | 232 | 232 | ||
| weight Kg | 58 | 60 | 71 | 75 | 127 | 140 | 177 | 236 | 242 | 433 | 770 | 930 | ||
Note: The large-diameter double seat control valve can be customized according to user requirements.
Basic dimensions of pipe connecting Flange: cast iron body PN1.6 according to JB7859
cast Steel body PN4.0,PN6.4 according to JB79-59
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