VIP member
Stainless steel gas emergency shut-off valve ZCRB
1、 Gas emergency shut-off valve - Overview
Product details
1Gas emergency shut-off valve--Overview
ZCRBseriesGas emergency shut-off valveIt is a new type of safety supporting device for gas pipeline engineering, mainly used in the following situations:
1. Connect with combustible gas leakage monitoring instruments. When the instrument detects a combustible gas leak, it automatically and quickly closes the main gas supply valve, cuts off the gas supply, and promptly prevents the occurrence of malignant accidents.
2. Connect to the maximum temperature (or pressure) safety controller of the thermal equipment. When the temperature or pressure at the detection point inside the device exceeds the set limit value, the gas supply valve will automatically and quickly close, stopping the supply of fuel.
3. Connect with the central fire alarm system of high-rise buildings. When a fire breaks out in the building, the gas supply inside the building is automatically cut off to prevent gas explosions.
4. Install BZCK gas emergency shut-off valves in the gas supply network of cities or factories, which can be centrally controlled in the central control room and remotely controlled to urgently shut down the pipeline gas supply at the accident site.
This series of products has excellent technical performance, low load loss, and high reliability. Suitable for combustible gases such as coal gas, natural gas, and liquefied petroleum gas, widely used in gas supply network systems, gas thermal energy factory workshops, gas boiler rooms, and residential safety facilities.
IIValve function and working principle
This series of valves is a normally open pulse triggered solenoid valve with accident self-locking and manual reset functions.
1. The valve is in a normally open state during daily operation, and the solenoid valve coil is in a power-off state, without consuming electrical energy.
2. When an accident occurs, the valve coil is instantly energized, triggering the valve to quickly close and enter a self-locking state. At this point, even if the power is removed, the valve remains in a self-locking closed state and will not automatically reopen.
3. This valve adopts a pilot operated valve disc, which is easy to open, even if the pressure reachesIt is also very easy to open at 6bar, with a diameter larger than DN125, and a lever handle is used to achieve the goal of effortless and fast opening and closing of this valve.
4. After the staff have dealt with the accident, the valve will be manually reopened to restore gas supply.
According to customer requirements, normally closed emergency shut-off valves can also be provided for power-off closure.
IIIGas emergency shut-off valve--Technical parameters:
1. Suitable for coal gas, natural gas, and liquefied petroleum gas.
2. Valve specifications: threaded connection G1/2 ", G3/4", G1 "; flange connection DN25-350
3. Working pressure: 0.5bar~6bar
4. Electrical protection level: CEI IP65/IP67
5. Explosion proof grade: Eexm Ⅱ T4/Eexm Ⅱ T5
6. Working voltage and power: AC 220V, 50Hz/14V; DC 12V/8.5W, DC24V/8.5W
7. Operating factor: uninterrupted output or pulse type
8. Electrical connection: plug-in (regardless of positive and negative poles)
9. Coil power: ≤ DN100, AC 220V at 20 ℃, 50Hz/24V DC 24V/ 24W coil model: MF-1 (2 ≥ DN100, AC 220V at 20 ℃, 50Hz/90VA DC 24V/ 85W coil model: ZCLF-1(2)
10. Working environment temperature:- 15～60℃
11. Sealing material: NBR rubber
12. Valve body material: brass, stainless steel, carbon steel
13. Valve closing time: less than 1 second
4、 Manual reset operation process
When the valve is cut off and the pipeline leakage fault is eliminated, the staff needs to manually reset it by pulling up the manual reset rod with force and hearing a "click" sound, indicating that the valve is completely opened. At this point, even if you release your hand, it will not be cut off. (Unless the valve coil is energized again).
Note: Manual reset must be operated when the solenoid valve coil is powered off.
5Gas emergency shut-off valve--Performance specifications
|
pressure rating
|
Normal temperature test pressure
|
|||
|
housing
|
seal
|
Low pressure seal
|
||
|
Nominal pressure (MPa)
|
1.6
|
2.4
|
1.76
|
0.6
|
|
2.5
|
3.75
|
2.75
|
0.6
|
|
|
4.0
|
6.0
|
4.4
|
0.6
|
|
|
Temperature
|
-15~60℃
|
|||
|
|
||||
VIGas emergency shut-off valve--Main component materials
|
Part name
|
Material Science
|
|
|
-1 thread“
|
DN25-DN350 (flange)
|
|
|
valve body
|
brass
|
Carbon steel (stainless steel)
|
|
Self-locking body
|
Brass (aluminum alloy)
|
|
|
valve stem
|
stainless steel
|
stainless steel
|
|
Sealed River
|
NBR rubber
|
|
7Gas emergency shut-off valve--Specification and Installation Dimension Table
|
Specification (DN)
|
L
|
≈H
|
D
|
D1
|
D2
|
Z-¤d
|
notes
|
|
1/2"(DN15)
|
68
|
120
|
|
|
|
|
Threads
|
|
3/4"(DN20)
|
72
|
128
|
|
|
|
|
|
|
1"(DN25)
|
100
|
160
|
|
|
|
|
|
|
25
|
160
|
180
|
115
|
85
|
65
|
4-¤14
|
Flange connection
|
|
32
|
180
|
200
|
135
|
100
|
78
|
4-¤18
|
|
|
40
|
200
|
200
|
145
|
110
|
85
|
4-¤18
|
|
|
50
|
230
|
220
|
160
|
125
|
100
|
4-¤18
|
|
|
65
|
290
|
255
|
180
|
145
|
120
|
4-¤18
|
|
|
80
|
310
|
320
|
195
|
160
|
135
|
8-¤18
|
|
|
100
|
350
|
380
|
215
|
180
|
155
|
8-¤18
|
|
|
125
|
400
|
405
|
245
|
210
|
185
|
8-¤23
|
|
|
150
|
480
|
458
|
280
|
240
|
210
|
8-¤23
|
|
|
200
|
600
|
530
|
335
|
295
|
265
|
8-¤23
|
|
|
250
|
650
|
600
|
390
|
350
|
320
|
12-¤23
|
|
|
300
|
750
|
650
|
440
|
400
|
368
|
12-¤23
|
|
|
350
|
850
|
750
|
500
|
460
|
428
|
12-¤23
|
Online inquiry
-
Contacts
-
Company
-
Telephone
-
Email
-
WeChat
-
Verification Code
-
Message Content
-