Technical data
产品型号 Product model | Q41F-16 | |
公称压力PN(MPa) Nominal pressure |
1.6 | |
试验压力 Test pressure | 强度(水)(MPa) Strength(water) |
2.4 |
密封(水)(MPa) Seal(water) |
1.76 | |
工作温度(℃) Temperature working |
≤150 | |
适用介质 Suitable working | 水、蒸气、油品 Water,steam,oil | |
Meterial of main parts
零件名称 Part name |
材料Matenal |
密封圈Seal ring | 氟橡胶 Fluorine rubber |
阀体、球体 Body,ball | 灰铸铁、球墨铸铁 Cast iron,nodular cast iron |
阀杆Stem | 碳钢、不锈钢 Carbon steel,stainless steel |
手柄Handle |
灰铸铁Cast iron |
Main dimensions
DN (mm) |
L |
D |
D1 |
D2 |
b-f |
Z-φd |
H |
20 | 150 | 105 | 75 | 55 | 16-2 | 4-φ14 | 84 |
25 | 160 | 115 | 85 | 65 | 16-2 | 4-φ14 | 160 |
32 | 165 | 135 | 100 | 78 | 18-2 | 4-φ18 | 160 |
40 | 180 | 145 | 110 | 85 | 18-3 | 4-φ18 | 200 |
50 | 203 | 160 | 125 | 100 | 20-3 | 4-φ18 | 200 |
65 | 222 | 180 | 145 | 120 | 20-3 | 4-φ18 | 270 |
80 | 241 | 195 | 160 | 135 | 22-3 | 8-φ18 | 360 |
100 | 305 | 215 | 180 | 155 | 24-3 | 8-φ18 | 360 |
125 | 356 | 245 | 210 | 185 | 26-3 | 8-φ18 | 430 |
150 | 394 |
280 |
240 | 210 | 28-3 |
8-φ23 |
430 |
200 |
457 |
335 |
295 |
265 |
30-3 |
12-φ23 |
450 |
Ball valve: Complete Guide for Industrial Applications
The ball valve is a widely used industrial valve known for its versatile performance, tight sealing, and simple operation. Featuring a spherical ball with a hollow center that rotates within the valve body, it allows for quick shut-off, precise flow control, and reliable isolation. Ball valves are integral in oil and gas, chemical processing, water treatment, HVAC, and industrial manufacturing, providing long service life, low maintenance, and operational efficiency.
This guide provides in-depth information on maintenance, applications, installation procedures, and problem-solving solutions, serving as a complete resource for engineers, operators, and procurement teams.
Quick Operation: 90-degree turn allows fast open/close.
Tight Sealing: Ensures minimal leakage under high pressure.
Durable Construction: Materials such as stainless steel, carbon steel, and brass enhance longevity.
Versatile Actuation: Manual, electric, or pneumatic options available.
Minimal Pressure Drop: Streamlined flow path maintains efficiency.
Regular maintenance ensures optimal performance and extended service life.
| Component | Frequency | Maintenance Action |
|---|---|---|
| Ball & Seat | Quarterly | Inspect for wear, clean debris, replace if necessary |
| Valve Body | Semi-Annually | Check for corrosion, cracks, or damage |
| Stem & Packing | Quarterly | Lubricate and tighten if needed |
| Actuator (if installed) | Annually | Test operation and calibrate |
| Overall Function | Annually | Operate valve fully to confirm smooth action |
Avoid excessive torque when operating the handle to prevent damage.
Keep records of inspections and maintenance activities.
Replace worn seats and seals promptly to prevent leakage.
Use manufacturer-approved lubricants and spare parts.

Provides reliable isolation for pipelines and storage tanks.
Suitable for high-pressure applications and corrosive media.
Handles aggressive chemicals when constructed from stainless steel or alloy materials.
Ensures safe flow control and leak prevention.
Used in municipal water supply and wastewater systems.
Protects pumps and filtration equipment from backflow.
Controls chilled water and hot water circuits.
Maintains energy efficiency and safe system operation.
Regulates fluids in production processes, cooling systems, and lubrication lines.
Proper installation is crucial for long-term reliability of ball valves.
Verify valve size, pressure rating, and material compatibility with the system.
Inspect valve for shipping damage.
Clean pipeline and remove debris before installation.
| Step | Action |
|---|---|
| Step 1 | Align valve with flow direction indicated on the body |
| Step 2 | Install using flanged, threaded, or welded connections as specified |
| Step 3 | Tighten bolts evenly in a cross pattern to prevent misalignment |
| Step 4 | Check stem orientation and ensure no mechanical stress is applied |
| Step 5 | Operate valve fully to confirm smooth rotation and proper closure |
| Step 6 | Gradually pressurize the system and inspect for leaks |
Installation Tips:
Use gaskets compatible with media and temperature ratings.
Ensure accessibility for future maintenance and inspection.
Avoid excessive force to prevent damage to the ball and seat.
| Problem | Possible Cause | Recommended Solution |
|---|---|---|
| Leakage at seat | Worn or damaged seat | Replace seat or ball |
| Stiff operation | Debris or corrosion | Clean internals, lubricate stem |
| Handle misalignment | Incorrect installation | Adjust handle and stem alignment |
| Excessive pressure drop | Partially open valve or clogged line | Fully open valve or clean pipeline |
| Corrosion | Aggressive media or material mismatch | Upgrade to corrosion-resistant materials |
| Specification | Typical Range / Details |
|---|---|
| Valve Type | Ball valve (floating or trunnion-mounted) |
| Size (DN) | 15 – 1200 mm |
| Pressure Rating | PN10 – PN63, Class 150 – 600 |
| Body Material | Stainless steel, carbon steel, brass |
| Ball Material | Stainless steel, chrome-plated steel |
| Seat Material | PTFE, PEEK, reinforced PTFE |
| End Connections | Flanged, threaded, welded |
| Operation | Manual, electric, pneumatic |
| Temperature Range | -40°C to 400°C (depending on material) |
| Applicable Media | Water, oil, gas, steam, chemicals |
Durability: Long-lasting performance under high pressure and temperature.
Reliability: Tight sealing prevents leakage and ensures system safety.
Low Maintenance: Minimal internal components reduce wear and maintenance needs.
Fast Operation: Quarter-turn design allows rapid opening and closing.
Versatility: Suitable for a wide range of industries and media types.
The ball valve is an essential component for industrial fluid control, offering quick operation, reliable sealing, and minimal pressure drop. By following proper installation, maintenance, and operational guidelines, users can ensure long-term efficiency, safety, and cost-effective operation.
With various material options, actuation methods, and sizes, ball valves are flexible solutions for industries ranging from oil and gas to water treatment and HVAC systems, providing dependable flow control and isolation in modern industrial applications.
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