Manual Gate Valve (Z40H) Product Instructions
1、 Purpose and main performance specifications
1. This type of valve is mainly suitable for opening and closing on medium pipelines such as water, steam, and oil with a working temperature of ≤ 425 ℃.
2. Main performance specifications
| Model |
Nominal Pressure (MPa) |
Test Pressure |
Applicable Temperature ℃ |
Applicable Medium |
|
|
Shell (Water) MPa |
Seat (Water) MPa |
||||
|
Z40H-64C |
6.4 |
9.6 |
7.04 |
-29～425℃ |
Water, Steam, Oil Products |
3.本族阀采用的电动装置及主要参数：
|
Model |
Size |
H |
L |
D |
D1 |
z-φd |
|||
|
Z40H-16C |
DN40 |
200 |
200 |
150 |
110 |
4-φ18 |
|||
|
DN50 |
358 |
250 |
165 |
125 |
4-φ18 |
||||
|
DN65 |
375 |
270 |
185 |
145 |
4-φ18 |
||||
|
DN80 |
433 |
280 |
200 |
160 |
8-φ18 |
||||
|
Z40H-16C |
DN100 |
502 |
300 |
220 |
180 |
8-φ18 |
|||
|
DN125 |
612 |
325 |
250 |
210 |
8-φ18 |
||||
|
DN150 |
676 |
350 |
285 |
240 |
8-φ22 |
||||
|
DN200 |
820 |
400 |
340 |
295 |
12-φ22 |
||||
|
DN250 |
969 |
450 |
405 |
320 |
12-φ25 |
||||
|
DN300 |
1142 |
500 |
460 |
410 |
12-φ25 |
||||
|
DN350 |
1280 |
520 |
520 |
470 |
16-φ25 |
||||
|
DN400 |
1452 |
600 |
580 |
525 |
16-φ30 |
||||
|
DN450 |
1541 |
650 |
640 |
585 |
20-φ30 |
||||
|
DN500 |
1676 |
700 |
705 |
650 |
20-φ34 |
||||
|
DN600 |
1874 |
800 |
840 |
770 |
20-φ41 |
||||
|
DN700 |
2083 |
900 |
910 |
840 |
20-φ41 |
||||
|
DN800 |
2400 |
1000 |
1020 |
950 |
24-φ41 |
||||
|
DN900 |
2950 |
1100 |
1120 |
1050 |
28-φ41 |
||||
|
Z42H-16C |
DN1000 |
3245 |
1200 |
1255 |
1170 |
28-φ48 |
|||
|
|
|
|
|
|
|
||||
|
Model |
Size |
H |
L |
D |
D1 |
z-φd |
|
Z40H-25 |
DN40 |
300 |
200 |
150 |
110 |
4-φ18 |
|
DN50 |
358 |
250 |
165 |
125 |
4-φ18 |
|
|
DN65 |
375 |
270 |
165 |
145 |
8-φ18 |
|
|
DN80 |
433 |
280 |
200 |
160 |
8-φ18 |
|
|
DN100 |
502 |
300 |
235 |
190 |
8-φ22 |
|
|
DN125 |
612 |
325 |
270 |
220 |
8-φ26 |
|
|
DN150 |
676 |
350 |
300 |
250 |
8-φ26 |
|
|
DN200 |
820 |
400 |
360 |
310 |
12-φ26 |
|
|
DN250 |
969 |
450 |
425 |
370 |
12-φ30 |
|
|
DN300 |
1142 |
500 |
485 |
430 |
16-φ30 |
|
|
DN350 |
1280 |
550 |
550 |
490 |
16-φ34 |
|
|
DN400 |
1452 |
600 |
610 |
550 |
16-φ34 |
|
|
DN450 |
1541 |
650 |
660 |
600 |
20-φ34 |
|
|
DN500 |
1676 |
700 |
730 |
660 |
20-φ41 |
|
|
DN600 |
1874 |
800 |
840 |
770 |
20-φ41 |
|
|
Z42H-25 |
DN700 |
2083 |
900 |
955 |
875 |
24-φ48 |
|
DN800 |
2400 |
1000 |
1070 |
990 |
24-φ48 |
|
Z42H-25 |
DN900 |
2950 |
1100 |
1180 |
1090 |
24-φ54 |
|
DN1000 |
3245 |
1200 |
1305 |
1210 |
28-φ58 |
2、 Structure and principle of action
1. Our valves are flange connected and comply with the GB/T 12234 standard. This valve is mainly composed of valve body, gate plate, valve stem, valve cover, electric device and other components.
2. It mainly relies on the rotation of the motor or handwheel of the electric device to raise or lower the valve stem, thereby driving the gate to make a linear displacement perpendicular to the fluid, in order to achieve the purpose of opening and closing.
3. The electric device is equipped with a limit switch at the end point, which can automatically cut off the circuit when it reaches the end point. At the same time, for safety reasons, it is also equipped with power overload protection device and signal light indication.
4. Main component materials:
| Part Name |
Material |
|
Body, Bonnet, Gate |
WCB |
|
Middle Gasket |
1Cr13+Flexible Graphite |
|
Stem Nut |
ZQAl 9-4 |
|
Stem |
2Cr13 |
3、 Precautions for storage, installation, and use
1. This product should be stored in a dry warehouse and outdoor storage is strictly prohibited.
2. Long term storage requires regular inspection. The surface should be cleaned of dirt and replaced with rust inhibitor every 6 months during processing.
3. This valve should be installed on a horizontal pipeline, with the driving device facing upwards and the valve stem perpendicular to the medium pipeline.
4. During installation, carefully check whether the usage is consistent with the performance specifications of this valve.
5. This valve is not allowed to be used for regulating flow.
6. This valve is installed outdoors or in places where the humidity does not exceed 90% (25 ℃) and the temperature exceeds 40 ℃ but is less than 60 ℃. The electrical installation should be outdoor, and cold insulation measures should be applied in winter.
7. Pay attention to the following items during installation:
Before installation, the pipes, valve chambers, sealing surfaces, and all exposed surfaces of the transmission pair should be cleaned of dirt and mud, but care should be taken not to damage the sealing surfaces.
⑵ Check whether the bolts are evenly tightened at all locations.
⑶ Suitable manual devices should be selected during installation.
The connection between the manual device and the valve should be firm and reliable.
After installing the manual device, the product should be able to open and close freely.
Manual devices and valves that can be lubricated should be regularly lubricated with lubricant, usually once a month.
Manual devices with poor environmental conditions should be equipped with protective devices.
The lifting sling should not be tied to the electrical equipment or valve stem, but should be placed at the waist of the valve.
After the valve is installed, it should be debugged according to the electrical installation manual before formal operation.
After the valve is installed, it must be fully opened during the pressure test of the pipeline.
9. If the power supply of the valve is cut off during operation, the power should be cut off first, and the wrench should be manually moved to operate it.
Before the operation of this valve, lubricating oil not lower than the bottom surface of the stem root diameter should be injected into the electrical equipment.
11. The exposed part of the valve stem and the electric transmission part should be regularly coated with lubricating oil.
12. This valve should be regularly inspected during use:
⑴ Wear condition of sealing surface.
⑵ Wear of valve stem and valve stem nut ladder thread.
Is there any accumulation of dirt between the valve body sealing surface and the gate sealing surface.
Are the fillers and gaskets ineffective.
13. After valve maintenance, a sealing test must be conducted.
5、 Possible malfunctions and their elimination methods
| Possible Fault |
Cause of Fault |
Remedy |
|
Packing Leakage |
1. Packing gland not tightened. 2. Insufficient packing. 3. Packing aged and failed. |
1. Tighten packing gland evenly. 2. Add packing. 3. Replace packing. |
|
Flange Joint Seal Leakage |
1. Flange bolts not tightened. 2. Flange sealing surface damaged. 3. Gasket broken or failed. |
1. Tighten bolts symmetrically and evenly. 2. Repair flange sealing surface. 3. Replace gasket. |
|
Seat Leakage |
1. Foreign matter trapped between sealing surfaces. 2. Sealing surface scratched or damaged. |
1. Clean sealing surfaces. 2. Re-machine sealing surface or replace parts. |
|
Electric actuator operates sluggishly or valve fails to open/close |
1. Packing is over-tightened. 2. Packing gland is tilted during fastening. 3. Dirt on stem threads or thread damage. 4. Bent valve stem. 5. Damaged transition unit. |
1. Loosen packing gland appropriately. 2. Correct the perpendicularity of packing gland. 3. Remove dirt or replace parts. 4. Replace valve stem. 5. Replace transition unit. |
|
Motor does not stop at stroke end, or valve cannot fully open/close |
1. Limit switch malfunction or inaccurate overload protection device. 2. Limit switch triggers too early or too late. |
1. Replace limit switch or adjust overload device. 2. Adjust limit switch. |
Main Outline：
