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XZF Rotary Disc Gate Valve
The XZF rotary disc gate valve operates by rotating the valve disc via a rotating shaft, ensuring that the valve’s opening and closing motion is rotational. The piston rod of the pneumatic actuator does not come into direct contact with the medium, thereby extending the actuator’s service life. The sealing pair is made of wear-resistant materials such as hard alloys and ceramics, which exhibit excellent mechanical and wear-resistant properties. This addresses the issue of sealing surfaces being easily eroded by material abrasion and having a short service life, resulting in a longer operational lifespan. Consequently, the valve delivers ideal performance and economic benefits to users, facilitates equipment maintenance and operational adjustments, and significantly enhances the overall safety and cost-effectiveness of system operation.
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Product Overview
The XZF rotary disc gate valve uses a rotating shaft to drive the valve disc, ensuring that the valve’s opening and closing action is rotational. The piston rod of the pneumatic actuator does not come into direct contact with the medium, thereby extending the actuator’s service life. The sealing pair is made of wear-resistant materials such as hard alloys and ceramics, offering excellent mechanical performance.
Its superior performance and wear resistance address the issue of sealing surfaces being easily eroded by material abrasion and having a short service life, thereby extending its operational lifespan. This ensures users achieve ideal performance and economic benefits, facilitates equipment maintenance and operational adjustments, and significantly enhances the overall safety and cost-effectiveness of operation.
Scope of Use
It is suitable for opening and closing the inlet and outlet of gas and slag in dry ash systems at power plants, and is also applicable as feed valves and balance valves in dry ash systems at power plants and steel mills.
Instruction for XZF Gate Valve Model Coding
|
Valve bore designation |
||
|
DN50:01 |
DN65:02 |
DN80:03 |
|
DN100:04 |
DN125:05 |
DN150:06 |
|
DN200:08 |
DN250:10 |
DN300:12 |
Installation and Usage Tips
1. Before installation, carefully read this instruction manual and verify the valve model, nominal diameter, and technical specifications.
2. Welding flanges immediately after installing valves is strictly prohibited. The installation distance for valves pre-reserved in the pipeline should be appropriate, and gaskets must be added on both sides of the flange.
3. The centers of the two pipelines and the center of the valve’s bore should be coaxial, and the flange surfaces must be flat. Significant deviations in the flange surfaces are not permitted to ensure proper clamping and normal operation of the valve. When tightening the bolts, ensure that the tightening is uniform and symmetrical.
Product Features
1. The material inlet is fully open with no obstructions, and the valve features unidirectional sealing, preventing dust jams and accumulation.
2. Excellent wear resistance and long service life.
3. When installing and using valves, there are directional requirements; the flow direction of the medium should be consistent with the markings on the valve.
4. Compact structure and easy installation.
Main Technical Parameters
Nominal pressure: 1.0 MPa
Medium temperature: <400℃
Strength test: 1.5 MPa
Sealing test: 1.1 MPa
Common Faults and Troubleshooting Methods
|
Failure |
Reason |
Exclusion method |
|
The valve is not sealing. |
There's a foreign object lodged. |
Remove foreign objects |
|
Sealing pair damaged |
Replace |
|
|
There is a leak at the flange joint. |
Bolts are tightened unevenly. |
Tighten the bolts evenly. |
|
Flange working surface damage |
Trim the flange working surface |
|
|
Gasket damage |
Replace the gasket. |
|
|
The valve cannot be opened or closed. |
Loose or failed transmission components |
Adjust or replace damaged parts. |
|
Insufficient air pressure, severe air leakage |
Inspect and repair the gas supply pipeline. |
|
|
Pneumatic component aging and failure |
Replace the damaged pneumatic components. |
|
|
Dust accumulation in the valve cavity |
Blow air into the valve through the purge port to remove dust. |
Installation Dimensions and Outline Drawing
|
Model |
DN |
H |
K1 |
n*L1 |
C1 |
K2 |
n*L2 |
C2 |
|
XZF601-10 |
50 |
250 |
125 |
4-Φ18 |
18 |
125 |
4-Φ18 |
18 |
|
XZF602-10 |
65 |
260 |
145 |
4-Φ18 |
19 |
145 |
4-Φ18 |
19 |
|
XZF603-10 |
80 |
262 |
160 |
8-Φ18 |
19 |
160 |
8-Φ18 |
19 |
|
XZF408-10 |
200 |
302 |
295 |
8-Φ22 |
20 |
295 |
8-Φ22 |
20 |
|
XZF408-350-10 |
200 |
310 |
295 |
8-Φ22 |
20 |
470 |
8-Φ22 |
25 |
|
XZF410-10 |
250 |
320 |
350 |
12-Φ22 |
24 |
350 |
12-Φ22 |
24 |
|
XZF410-10SZM |
250 |
210 |
350 |
12-M20 |
350 |
12-M20 |
20 |
|
|
XZF412-10 |
300 |
320 |
400 |
12-Φ22 |
24 |
400 |
12-Φ22 |
24 |
|
XZF412-10CL |
300 |
282 |
410 |
6-M16 |
630 |
12-Φ26 |
28 |
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