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SHFKL liquid ammonia with manual solenoid valve
1、 Scope of use: The liquid ammonia emergency shut-off solenoid valve is used in conjunction with the liquid ammonia alarm, and can be used as a leak
Product details
1、 Scope of use
The emergency shut-off solenoid valve for liquid ammonia is used in conjunction with the liquid ammonia alarm, and can be used as a leak alarm system or as a standalone power-off protection system. This valve mainly solves the problem of difficult dynamic sealing of conventional emergency shut-off valves, with reliable performance and tight sealing. It is mainly used in high and medium pressure main pipeline self-control systems for flammable and explosive gases such as liquid ammonia storage tanks and liquid ammonia pipelines, and is an essential product for security.
2、 Structural principle
Normally open - In the working state, the solenoid valve is in the open state, and the coil is not charged. When there is a leakage of liquid ammonia or ammonia gas, the solenoid valve is instantly powered on to cut off the gas source, but it must be manually opened after the danger is eliminated. When starting, first turn on the manual device (rotate clockwise 180 degrees), and with a click, the main piston opens. Then continue to rotate 180 degrees. (Must be reset after opening)
Normally closed type - In the working state, the solenoid valve is in the open state, and the coil is also in the charged state. When liquid ammonia or ammonia gas leaks, the solenoid valve instantly loses power and cuts off the gas source. When opening, first turn on the power, and then rotate the manual device once. Note that the manual lever should always be downward.
3、 Detailed parameters
|
principle structure |
Direct acting, step-by-step direct acting |
Fluid |
liquid ammonia,Flammable and explosive media such as ammonia |
|
Coil operating temperature |
<+85℃ |
medium temperature |
<-40℃、<+60℃ |
|
control mode |
Normally open (powered off, manually open); Normally closed (power off to close, manually powered on to open) |
nominal pressure |
0.02-0.6MPa；0.02-1.6 MPa；0.02-2.5 MPa ; 0.02-4.0 MPA |
|
Standard voltage |
AC220V、DC24V |
Coil connection method |
Explosion proof cover, three core sheathed cable, lead type, plug type |
|
Sealing performance |
Temperature resistance, pressure resistance, wear resistance, and corrosion resistance |
Connection method |
Flanges, threads, welding |
|
Sealing method |
Flat and cone plane sealing |
leakage rate |
Zero Leakage |
|
Nominal Diameter （mm） |
Connection method (Imperial) |
Connection size (National Standard) |
Stainless steel length （mm） |
Length of cast iron body （mm） |
Stainless steel height （mm） |
Height of cast iron body （mm） |
stainless steel Explosion proof height |
Cast iron body Explosion proof height |
material （1Cr19Ni9） |
|
DN10 |
thread |
G3/8” |
71 |
|
121 |
|
129 |
|
304stainless steel |
|
DN15 |
thread |
G1/2” |
71 |
|
121 |
|
129 |
|
304stainless steel |
|
DN20 |
thread |
G3/4” |
84 |
105 |
131 |
160 |
139 |
175 |
304/HT250 |
|
DN25 |
thread |
G1” |
97 |
105 |
141 |
160 |
149 |
175 |
304/HT250 |
|
DN32 |
thread |
G11/4” |
119 |
125 |
151 |
170 |
159 |
185 |
304/HT250 |
|
DN40 |
thread |
G11/2” |
129 |
140 |
161 |
190 |
169 |
205 |
304/HT250 |
|
DN50 |
thread |
G2” |
149 |
165 |
181 |
200 |
189 |
215 |
304/HT250 |
|
DN20 |
flange |
2-M8; hole spacing70 |
58 |
120 |
135 |
180 |
145 |
195 |
304/HT250 |
|
DN25 |
flange |
4-φ12; hole spacing85 |
110 |
130 |
181 |
190 |
189 |
205 |
304/HT250 |
|
DN32 |
flange |
4-φ14; hole spacing100 |
128 |
150 |
209 |
210 |
209 |
225 |
304/HT250 |
|
DN40 |
flange |
4-φ16; hole spacing110 |
142 |
160 |
211 |
230 |
219 |
245 |
304/HT250 |
|
DN50 |
flange |
4-φ17; hole spacing125 |
158 |
170 |
231 |
250 |
239 |
265 |
304/HT250 |
|
DN65 |
flange |
4-φ17; hole spacing145 |
200 |
205 |
291 |
280 |
299 |
295 |
304/HT250 |
|
DN80 |
flange |
4-φ17; hole spacing160 |
220 |
275 |
321 |
320 |
329 |
335 |
304/HT250 |
|
DN100 |
flange |
4-φ12; hole spacing180 |
260 |
310 |
351 |
330 |
359 |
345 |
304/HT250 |
|
DN125 |
flange |
8-φ18; hole spacing245 |
400 |
400 |
440 |
440 |
455 |
455 |
304/HT250 |
|
DN150 |
flange |
8-φ23; hole spacing280 |
400 |
420 |
560 |
560 |
575 |
575 |
304/HT250 |
|
DN200 |
flange |
12-φ23; hole spacing335 |
550 |
550 |
660 |
660 |
675 |
675 |
304/HT250 |
|
DN250 |
flange |
12-φ25; hole spacing405 |
650 |
650 |
630 |
630 |
645 |
645 |
304/HT250 |
|
DN300 |
flange |
12-φ25; hole spacing410 |
750 |
750 |
690 |
690 |
705 |
705 |
304/HT250 |
|
DN350 |
flange |
16-φ26; hole spacing470 |
950 |
950 |
830 |
830 |
845 |
845 |
304/HT250 |
|
DN400 |
flange |
16-φ30; hole spacing525 |
950 |
950 |
830 |
830 |
845 |
845 |
304/HT250 |
|
DN500 |
flange |
20-φ34; hole spacing650 |
1150 |
1150 |
1000 |
1000 |
1015 |
1015 |
304/HT250 |
5、 Installation instructions
1. When installing, the solenoid valve coil should be facing upwards and kept in a vertical position. The arrow on the solenoid valve should be consistent with the flow direction of the pipeline.
2. The solenoid valve should ensure that it operates at the rated voltage of the power supply15%-10%Normal operation within the fluctuation range.
3. The working medium of the solenoid valve should be clean and free of impurities, and the internal components and filters of the solenoid valve should be cleaned regularly.
4When the solenoid valve malfunctions, it is best to install a bypass device to ensure the normal operation of the system
5The pipeline must be cleaned thoroughly. This valve belongs to a pilot operated structure, and when the pressure difference is below2When the pressure difference does not meet the minimum requirement for piston opening in kilograms, the flow rate will decrease, and at this time, the pipeline needs to be pressurized for treatment.
7. There shall be no reverse pressure difference in the pipeline. And it needs to be powered on several times to reach the appropriate temperature before it can be officially put into use.
8When the rigidity of the pipeline is insufficient, it is recommended to fix the pipeline in front of the valve to prevent vibration caused by the operation of the solenoid valve.
9Before installation, please carefully read the user manual to determine if the product meets the usage conditions.
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