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Ball valve

    Ball valve

    The ball valve is a versatile industrial valve designed for quick and reliable shut-off, flow control, and isolation in pipelines. Featuring a hollow, rotating ball that opens or closes the flow path, it provides tight sealing, minimal pressure drop, and durable performance. Ball valves are widely used in oil and gas, chemical processing, water treatment, HVAC systems, and industrial manufacturing. With options for manual, electric, or pneumatic actuation, and construction from stainless steel, carbon steel, or brass, ball valves offer high reliability, low maintenance, and long service life, making them a preferred choice for demanding applications.
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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

Introduction

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.


Key Features of Ball Valve

  • 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.


Maintenance and Care

Regular maintenance ensures optimal performance and extended service life.

Routine Maintenance Tasks

ComponentFrequencyMaintenance Action
Ball & SeatQuarterlyInspect for wear, clean debris, replace if necessary
Valve BodySemi-AnnuallyCheck for corrosion, cracks, or damage
Stem & PackingQuarterlyLubricate and tighten if needed
Actuator (if installed)AnnuallyTest operation and calibrate
Overall FunctionAnnuallyOperate valve fully to confirm smooth action

Best Practices

  • 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.


Ball valve

Applicable Industries and Usage

Oil and Gas

  • Provides reliable isolation for pipelines and storage tanks.

  • Suitable for high-pressure applications and corrosive media.

Chemical Processing

  • Handles aggressive chemicals when constructed from stainless steel or alloy materials.

  • Ensures safe flow control and leak prevention.

Water Treatment and Distribution

  • Used in municipal water supply and wastewater systems.

  • Protects pumps and filtration equipment from backflow.

HVAC Systems

  • Controls chilled water and hot water circuits.

  • Maintains energy efficiency and safe system operation.

Industrial Manufacturing

  • Regulates fluids in production processes, cooling systems, and lubrication lines.


Quick Installation Guide

Proper installation is crucial for long-term reliability of ball valves.

Preparation

  • Verify valve size, pressure rating, and material compatibility with the system.

  • Inspect valve for shipping damage.

  • Clean pipeline and remove debris before installation.

Step-by-Step Installation

StepAction
Step 1Align valve with flow direction indicated on the body
Step 2Install using flanged, threaded, or welded connections as specified
Step 3Tighten bolts evenly in a cross pattern to prevent misalignment
Step 4Check stem orientation and ensure no mechanical stress is applied
Step 5Operate valve fully to confirm smooth rotation and proper closure
Step 6Gradually 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.


Troubleshooting and Solutions

ProblemPossible CauseRecommended Solution
Leakage at seatWorn or damaged seatReplace seat or ball
Stiff operationDebris or corrosionClean internals, lubricate stem
Handle misalignmentIncorrect installationAdjust handle and stem alignment
Excessive pressure dropPartially open valve or clogged lineFully open valve or clean pipeline
CorrosionAggressive media or material mismatchUpgrade to corrosion-resistant materials

Technical Specifications

SpecificationTypical Range / Details
Valve TypeBall valve (floating or trunnion-mounted)
Size (DN)15 – 1200 mm
Pressure RatingPN10 – PN63, Class 150 – 600
Body MaterialStainless steel, carbon steel, brass
Ball MaterialStainless steel, chrome-plated steel
Seat MaterialPTFE, PEEK, reinforced PTFE
End ConnectionsFlanged, threaded, welded
OperationManual, electric, pneumatic
Temperature Range-40°C to 400°C (depending on material)
Applicable MediaWater, oil, gas, steam, chemicals

Advantages of Ball Valves

  • 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.


Conclusion

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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