self-operated micro- pressure control valve It is widely used for controlling after-valve pressure (mmH2O) of non corrosive gas or air with pressure no higher than1.4MPa, working temperature no higher than 120℃(or 150℃) and pressure control range of 0.14 - 7.2KPa. It is widely applied in gas sealing pressure control devices of various oil products, chemicals
and liquid storage tanks.
Pressure balancing part
BODY | Bonnet |
DN15~100mm | Material WCB Cf8 CF8M |
PN1.6 4.0 Mpa | Pressure balancing part: diaphragm + spring |
Material WCB Cf8 CF8M | Material: spring 304 |
Diaphragm | ZA7 Actuator (pilot) |
| Diaphragm box Punch forming with A3 steel sheet |
Fluorine rubber : -20 - 150℃ | Diaphragm NBR, fluorine rubber, EPR |
EPR : -50 - 150℃ | Spring304 |
Plug304 | |
Sea304t | |
Stem304 | |
*The actuator with five kinds of pressure control ranges and one model | |
*Easy assembly and disassembly, convenient control |
micro-pressure control valve
DN | DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 |
Rated flow coefficient | Kv | 4 | 6 .3 | 8 | 16 | 20 | 32 | 50 | 80 | 25 |
Flow characteristic | Quick open | |||||||||
PN | PN | 1 .6 Mpa | ||||||||
Pressure balancing part | SPRING | 1Cr 18 Ni9 | ||||||||
Bellows diaphragm | NBR Fluorine rubber EPR | |||||||||
Working temperature | (-40 ~120℃ ) ( -20 ~150℃ ) (-50~ 150℃ ) | |||||||||
Allowable leakage (input 0.1MPapressure before the valve) | 1bubble/min 2 bubbles/min 3 bubbles/min 4 bubbles/min 6 bubbles/ min 11 bubbles/min | |||||||||
Main technical parameters of ZA7 actuator (pilot)
Effective area(cm2) | 430 | ||
After-valve pressure | 0 .14~0 .36 | 0 .3 2~ 1.00 | 0 .90~2 .50 |
control range (Kpa) | 2 .10~4 .50 | 3 .9 0~7 .20 | |
Maximum output force Mpa | ≤1.4 | ||
Minimum output force Mpa | ≥0 .2 | ||
Diaphragm material | NBR | Fluorine rubber | EPR |
Working temperature ℃ | (-4 0~ 120℃) | ( -20~150℃ ) | ( -50~ 150℃ ) |
Adjusting precision | ±15% | ||
Control pipeline, connection | Copper pipe or steel pipe Φ10X 1(mm); ferrule connection: R1/4" | ||
Product features:
* Simple structure, convenient installation and commissioning, low maintenance cost
* Wide adjusting range: Adjustment of five levels can be carried out within the range
of 14~720mmH2O.
* Fast response and high adjusting precision
* Playing the safety protection function when being used in the storage tank nitrogen
sealing system.
