Self-operated valve front pressure control valve
Technical Parameter
Nominal diameter: DN20~200mm
Pressure range: PN1.0~6.4MPa
Use medium: steam, non-corrosive liquid, gas
Manufacturing standard: GB/T4213-1992
Flange standard: GB/T9113-2000
Structure length: GB/T12221-1989
Valve material: WCB, CF8
Leakage level: ANSI B16.104-1976 (level IV)
Product overview
The pressure regulating valve in front of the self-operated valve is composed of the valve body and the balance spring. No external energy is required. The pressure of the medium to be adjusted is used as the power source to introduce the actuator to push the spring to control the position of the valve core, and to change the pressure difference and flow at both ends, so that the The pressure in front of the valve is stable, the action is sensitive, the sealing performance is good, and the pressure set point fluctuation is small. It is widely used in automatic control of decompression and pressure stabilization of gas, liquid and steam media.
Performance characteristics
1. The pressure setting value of the pressure regulating valve in front of the self-operated valve may also be adjusted during operation;
2. It adopts quick-opening flow characteristics, with sensitive action, high adjustment degree and good sealing performance;
3. Automatic control of gas, liquid, steam and other medium pressure in various industrial equipment;
4. Customized high pressure type or high temperature type can be selected according to the pressure and temperature used on site.
Product number
| Category | Model |
| Single seat press open | ZZYP-16～64K |
| Two-seat push-to-open type | ZZYN-16～64K |
| Sleeve press open type | ZZYM-16～64K |
Press-to-open type: It is used to adjust the pressure before the valve. When the pressure after the valve rises, the valve opens to achieve the purpose of pressure relief and stabilization.
The main technical parameters
| Nominal diameter DN (mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | |||
| Seat diameter DN (mm) | 10 | 12 | 15 | 20 | ||||||||||
| Rated flow coefficient Kv | 1.8 | 2.4 | 4.4 | 4 | 11 | 20 | 30 | 48 | 75 | 120 | 190 | 300 | 480 | 760 |
| Allowable differential pressure (MPa) | 2.5 | 2.0 | 1.6 | 1.0 | ||||||||||
| Nominal pressure (MPa) | 1.6 4.0 6.4 | |||||||||||||
| Inherent flow characteristics | Open quickly | |||||||||||||
| The minimum pressure difference P (MPa) to ensure the normal operation of the pressure regulating valve | 0.05 | |||||||||||||
| Pressure segment range (KPa) | 15～50 40～80 60～100 80～140 120～80 160～220 200～260 240～300 280～350 330～400 380～450 430～500 480～560 540～620 600～700 680～800 780～900 800～1000 900～2000 | |||||||||||||
| Working temperature ℃ | Liquid≤140; gas≤80; with condenser and heat sink≤350 | |||||||||||||
| suitable medium | Gas, steam, low viscosity liquid | |||||||||||||
| Flange size and type | PN10, 16, 40GB9113-88, PN64JB/T7-94; PN10, 16 male, PN40, 64 male or other standard flanges (such as ANSI, JIS, DIN, etc.) | |||||||||||||
| Structure length | According to GB12221-89 standard | |||||||||||||
| Actuator signal interface | Internal thread M16×1.5 | |||||||||||||
Note: The pressure segment range can be designed according to user requirements.
Main performance indicators
| Control precision % | ±8 | |||||||||||
| Allowable leakage | Metal seat（L/H） | Single seat (Class IV): ≤10-4 valve rated capacity | ||||||||||
| Soft seal（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 connection dimensions and weight
| Nominal diameter (DN) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | ||
| L | PN16、40 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | |
| PN64 | 230 | 230 | 260 | 260 | 300 | 340 | 380 | 430 | 500 | 550 | 650 | ||
| B | 233 | 332 | 373 | 522 | 673 | 980 | 1200 | ||||||
| H | Pressure adjustment rang e（MPa） | 15～140 | 475 | 520 | 540 | 710 | 780 | 840 | 880 | 915 | |||
| 120～300 | 455 | 500 | 520 | 690 | 760 | 800 | 870 | 880 | |||||
| 280～500 | 450 | 490 | 510 | 680 | 750 | 790 | 860 | 870 | |||||
| 480～1000 | 445 | 480 | 670 | 740 | 780 | 850 | 860 | ||||||
| 600～1500 | 445 | 570 | 600 | 820 | 890 | 950 | 950 | 1000 | |||||
| 1000～2500 | 445 | 570 | 600 | 820 | 890 | 950 | 950 | 1000 | |||||
| A | Pressure adjustment rang e（MPa） | 15～140 | φ282 | φ308 | |||||||||
| 120～300 | φ232 | ||||||||||||
| 280～1000 | φ196 | φ196 | φ282 | ||||||||||
| 600～2500 | φ85 | φ96 | |||||||||||
| WT（Kg） | 26 | 37 | 42 | 72 | 90 | 114 | 130 | 144 | 180 | ||||
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