Product model: ZZYP
Nominal diameter: DN20mm ~ 300mm
Nominal pressure: ＞ 0.6MPa
Applicable media: water, oil, gas, etc
Applicable temperature: ≤ 350 ℃
Operating temperature: - 25 ℃ ~ 55 ℃
Connection type: flange type
Main materials: ZG230～450、ZG1Cr18Ni9Ti、ZG0Cr18Ni12Mo2Ti
PRODUCT OVERVIEW
The self operated pressure single seat regulating valve does not need additional energy, uses the energy of the regulated medium as the power source, introduces the actuator to control the position of the valve core, changes the pressure difference and flow at both ends, and stabilizes the pressure in front of (or behind) the valve. It has the advantages of sensitive action, good sealing and small fluctuation of pressure set point. It is widely used in the automatic control of pressure reduction and stabilization or pressure relief and stabilization of gas, liquid and steam media.
PRODUCT FEATURES
1. The self operated pressure regulating valve does not need additional energy and can work in a place without electricity and gas, which is convenient and saves energy.
2. The range of pressure sections is fine and cross each other, and the adjustment accuracy is high.
3. The pressure setting value can be set continuously during operation.
4. For the pressure regulation behind the valve, the ratio of the pressure before the valve to the pressure behind the valve is 10:1 ~ 10:8.
5. Rubber diaphragm detection, high detection accuracy and sensitive action of actuator.
6. The pressure balance mechanism is adopted to make the control valve sensitive and accurate.
MATERIAL OF MAIN PARTS
| Material code | C（WCB） | P（304） | R（316） | |
|---|---|---|---|---|
Main parts | valve body | WCB（ZG230-450） | ZG1Cr18Ni9Ti（304） | ZG1Cr18Ni12Mo2Ti（316） |
| Valve core and valve seat | 1Cr18Ni9Ti（304） | 1Cr18Ni9Ti（304） | 1Cr18Ni12Mo2Ti（316） | |
| Valve stem | 1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | |
| diaphragm | Butadiene rubber, ethylene propylene rubber, neoprene, oil resistant rubber | |||
| Membrane cover | A3 and A4 steel coated with tetrafluoroethylene | |||
| Filler | Polytetrafluoroethylene, flexible graphite | |||
| Spring | 60Si2Mn | |||
| Guide sleeve | HPb59-1 | |||
MAIN TECHNICAL PARAMETERS
Nominal diameter DN(mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | ||||||||||
Rated flow coefficient Kv | 7 | 11 | 20 | 30 | 48 | 75 | 120 | 190 | 300 | 480 | 760 | 1100 | 1750 | ||||||||||
Rated stroke(mm) | 8 | 10 | 14 | 20 | 25 | 40 | 50 | 60 | 70 | ||||||||||||||
Nominal pressure PN(MPa) | 1.6 、 4.0 、 6.4 | ||||||||||||||||||||||
Pressure regulation 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 ～ 900 880 ～ 1000 950 ～ 1500 1000 ～ 2500 | ||||||||||||||||||||||
Flow characteristics | Come on | ||||||||||||||||||||||
Adjustment accuracy ( ％ ) | ± 5 | ||||||||||||||||||||||
Service temperature ( ℃ ) | ≤ 350 | ||||||||||||||||||||||
Allowable leakage | Hard seal (L/h) | Single seat：≤ 10 -4 Valve rated capacity (class IV) | |||||||||||||||||||||
Soft seal (mL/h) | 0.15 | 0.30 | 0.45 | 0.60 | 0.90 | 1.7 | 4.0 | 6.75 | 11.10 | 16.0 | |||||||||||||
Decompression ratio | max | 10 | |||||||||||||||||||||
min | 1.25 | ||||||||||||||||||||||
MAIN OVERALL DIMENSIONS AND WEIGHT
Nominal diameter DN | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | ||
Flange nozzle sizeB | 383 | 512 | 603 | 862 | 1023 | 1380 | 1800 | 2000 | 2200 | ||||||
Flange end distanceL | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 | 850 | ||
Pressure regulation rangekpa | 15-140 | H | 475 | 520 | 540 | 710 | 780 | 840 | 880 | 915 | 940 | 1000 | |||
A | 280 | 308 | |||||||||||||
280-500 | H | 455 | 500 | 520 | 690 | 760 | 800 | 870 | 880 | 900 | 950 | ||||
A | 230 | ||||||||||||||
120-300 | H | 450 | 490 | 510 | 680 | 750 | 790 | 860 | 870 | 890 | 940 | ||||
A | 176 | 194 | 280 | ||||||||||||
480-1000 | H | 445 | 480 | 670 | 740 | 780 | 850 | 860 | 880 | 930 | |||||
A | 176 | 194 | 280 | ||||||||||||
600-1500 | H | 445 | 570 | 600 | 820 | 890 | 950 | 1000 | 1100 | 1200 | |||||
A | 85 | 96 | |||||||||||||
1000-2500 | H | 445 | 570 | 600 | 820 | 890 | 950 | 1000 | 1100 | 1200 | |||||
A | 85 | 96 | |||||||||||||
Weightkg | 26 | 37 | 42 | 72 | 90 | 114 | 130 | 144 | 180 | 200 | 250 | ||||
Pressure pipe joint accumulation | M16×1.5 | ||||||||||||||
