Why Choose Us?
Your Trusted Manufacturer and Supplier of 3 pc ball valves
Full Industry Chain Production Advantage
● We integrate design and development, precision casting, CNC machining, assembly, sales, and service to ensure product quality control and efficient delivery.
High-Quality Products and Wide Applicability
● Our main products include stainless steel industrial accessories, industrial valves, sanitary accessories, and valves, suitable for high-demand industries such as petroleum, chemicals, firefighting, pharmaceuticals, food, and semiconductors.
International Certifications and Compliance Assurance
● We hold multiple international certifications including ISO9001, ISO45001, CE, ROHS, TS, and KC, meeting the standards of various countries. We can also assist with obtaining relevant certifications to help clients smoothly enter target markets.
Global Market Recognition
● Our products are sold to Europe, America, Asia, South America, and other regions (such as the United States, South Korea, Brazil, Russia, etc.) and are well-regarded in the international market.
Advanced Manufacturing and Strict Quality Control
● We are equipped with modern production equipment and testing instruments, along with a professional team for design, manufacturing, and inspection. We have obtained 30 national patents, ensuring high precision and product reliability.
Sustainable Development and Green Production
● Our 2.4 MW photovoltaic power generation project produces 2.6 million kWh annually, reflecting our environmental commitment and reducing carbon footprint, aligning with international sustainability trends.
Customer-Centered Service Philosophy
● We offer customized solutions, quickly respond to client needs, and aim to exceed customer expectations to ensure the safe and efficient operation of pipeline systems.
Innovation and Patented Technologies
● We continuously invest in R&D, holding several patented technologies to maintain a leading position in the industry and meet the demand for high-performance products from our clients.
Scale Production and Stable Supply
● Our factory covers 33,000㎡ with over 300 employees, ensuring sufficient production capacity and timely delivery for large orders.
Excellent Corporate Culture and Team
● We prioritize talent development and team collaboration, creating a high-efficiency learning organization to ensure continuous improvement of both services and products.
Contact us for professional fluid control solutions!
3pc ball valve – High-Quality Fluid Control Solution
A ball valve three piece (3-Piece Ball Valve) is an industrial valve composed of the valve body and two end connection components, fastened together by bolts. Its modular design allows for easy disassembly and maintenance, 3 stainless steel ball valve making it widely used in fluid control systems that require high sealing, corrosion resistance, and frequent cleaning.
Key Features of the 3 ball valve stainless steel
Structural Advantages
● Three-Piece Design: The valve body can be easily disassembled, allowing for replacement of the valve seat, seals, or cleaning of the interior without removing the pipeline. This significantly reduces maintenance costs.
● High Durability: The valve body is made of high-quality stainless steel (304/316L), offering resistance to high pressure (PN16) and corrosion (suitable for acidic and alkaline media).
2.Outstanding Sealing Performance
● The sealing materials can be chosen as PTFE (soft seal) or metal hard seal, ensuring zero leakage and meeting high sanitary standards (such as FDA, EHEDG) required in the food and pharmaceutical industries.
3.Flexible Adaptability
● Multiple Connection Options: Threaded (BSP/NPT), flanged (ANSI/DIN), welded (SW/BW), and clamp (Tri-Clamp) connections, among others.
● Applicable to Multiple Industries: Oil & gas, chemical, food & pharmaceuticals, semiconductors, water treatment, and more.
3 piece stainless steel ball valve vs Other Ball Valves
|
Feature |
3 piece ss ball valve |
2 piece ss ball valve |
1 piece ss ball valve |
|
Maintenance Ease |
✅ Easy to disassemble and maintain |
❌ Partially disassemblable |
❌ Non-disassemblable |
|
Sealing Performance |
⭐⭐⭐⭐⭐ High sealing |
⭐⭐⭐⭐ Good |
⭐⭐⭐ Average |
|
Cost |
Medium (Low maintenance cost) |
Lower |
Lowest |
|
Suitable Scenarios |
High-frequency maintenance/High sanitary requirements |
Regular industrial |
Simple low-pressure pipelines |
Advantages of the 3 piece stainless ball valve
Modular Design, Easy Maintenance
The three-piece structure (valve body + two end connection components) allows for quick disassembly, cleaning, or replacement of valve seats and seals, reducing downtime and lowering maintenance costs.
01
High Sealing Performance, Zero Leakage
PTFE (Polytetrafluoroethylene) or metal hard seals are available, offering corrosion and high-temperature/high-pressure resistance, ensuring long-term stable operation in compliance with international standards such as ANSI, DIN, and JIS.
02
Wide Applicability
Materials: 304, 316L stainless steel, suitable for water, steam, oil, chemicals, and high-purity media (such as food and pharmaceutical applications).
Pressure range: PN16 (or customizable for higher pressure ratings).
Temperature range: -20°C to 120°C (higher temperatures available).
03
Multiple Connection Options
Threaded (BSP/NPT), flanged (ANSI/DIN), welded (SW/BW), and clamp (Tri-Clamp) connections, catering to various pipeline system requirements.
04
International Certifications, Global Recognition
Certified with ISO9001, CE, ROHS, TS, and more, complying with FDA, EHEDG sanitary standards, making it suitable for export to markets in Europe, the U.S., Asia, and beyond.
05
3PC Ball Valve Common Types
The ball valve 3 piece stainless steel (3PC Ball Valve) is widely used in industrial fluid control due to its modular design, ease of maintenance, and high sealing performance. Based on connection type, actuation method, and structural design, it can be categorized into the following common types to meet the needs of various industries:
(1) Manual ball valve 3pc
● Standard handle or gear operation, suitable for conventional industrial pipeline control.
(2) 3PC Pneumatic/Air Actuated Ball Valve
● Model Example: Code: 30-0C200 3PC Stainless Steel Air Actuated Ball Valve
● Features: Driven by compressed air for fast switching, suitable for automated control systems (e.g., chemical, food processing).
(3) 3PC Electric Actuated Ball Valve
● Features: Motor-driven, supports remote control, suitable for intelligent fluid management systems.
(1) 3 Piece Threaded Ball Valve
● Application: Low-pressure, small-diameter pipelines (NPT/BSP threads), commonly used in water treatment, firefighting systems.
(2) 3 piece socket weld ball valve
● Model Example: Code: 30-0C230 3PC Socket Weld Ball Valve
● Features: Welded connection, no leakage risk, suitable for high-pressure, high-temperature conditions (e.g., oil, natural gas).
(3) 3PC Butt Weld Ball Valv
● Long Type: Extended valve body, suitable for special pipeline layouts.
● Short Type: Compact design, saves installation space.
● Applications: High-purity media (e.g., semiconductors, pharmaceuticals), high-temperature steam systems.
(4) 3PC Flanged Ball Valve
● Standards: ANSI, DIN, JIS flanges, complying with various national specifications.
(5) 3PC Tri-Clamp Ball Valve
● Features: Hygienic design, quick-disconnect for easy cleaning, suitable for food, dairy, and biopharmaceutical applications.
● Low-Temperature 3-pcs ball valve
Deep cold treatment, suitable for LNG, liquid nitrogen, and other low-temperature media.
● High-Pressure 3 piece ball valve stainless steel
Reinforced valve body, pressure resistance up to PN100 or higher.
● Sanitary 3 pcs body ball valve
Mirror polished (Ra ≤ 0.8μm), complies with FDA and EHEDG standards.
How to selection the Right 3PC Ball Valve?
● Type of Medium: Corrosive? High-purity? Contains particulates?
● Pressure and Temperature: Standard (PN16-PN40) or high pressure and temperature?
● Connection Type: Welded, threaded, flanged, tri-clamp?
● Automation Requirements: Manual, pneumatic, or electric?
3 piece body ball valve Materials List
|
No. |
Parts |
Material |
|
1 |
Body |
CF8/CF8M |
|
2 |
Ball |
F304/F316 |
|
3 |
Cap |
CF8/CF8M |
|
4 |
Stem |
SS304/SS316 |
|
5 |
Seat |
PTFE |
|
6 |
Gasket |
PTFE |
|
7 |
Stem Packing |
PTFE |
|
8 |
Gland Nut |
SS304 |
|
9 |
Handle Nut |
A2-70 |
|
10 |
Handle |
SS201 |
|
11 |
Handle Sleeve |
PVC |
|
12 |
Steel Washer |
SS304 |
|
13 |
Nut |
A2-70 |
|
14 |
Bolt |
SS304 |
3pcs ball valve Application Fields
- Oil & Chemical: Oil and gas transmission, chemical medium control.
- Food & Beverage: CIP/SIP cleaning systems, meets sanitary requirements.
- Pharmaceutical & Biotech: Sterile piping systems, preventing contamination.
- Semiconductors & Electronics: High-purity water, specialty gas control.
- Water Treatment & Firefighting: Corrosion-resistant, long-life design.
3pc body ball valve Production Process - 10-Step Precision Manufacturing
Leadtek Fluid from Zhejiang employs advanced international precision casting (lost wax method) and CNC machining technology to ensure that each 3 ss ball valve meets the highest quality standards. Below are our core production steps:
Step 1. Mold Design
● 3D modeling using CAD/CAM software
● Custom valve body structure according to customer requirements
● Optimizing fluid dynamics design to reduce pressure loss
Step 2. Wax Mold Making
● Injection molding using aerospace-grade low-temperature wax
● Each wax mold is individually numbered for traceability
● Wax molds are assembled into clusters to improve casting efficiency
Step 3. Sand Mold Making
● Seven-layer composite shell process:
◎ Zircon sand initial layer (high-temperature resistance)
◎ Molybdenum sand reinforcement layer
◎ Silica sol binder
◎ 48 hours natural drying to ensure shell strength
Step 4. Lost Wax Casting
● AOD furnace refining of stainless steel (304/316L)
● Vacuum-protected casting to prevent oxidation
● Precise temperature control at 1560-1580°C
Step 5. Post-processing
● Vibration shell removal + sandblasting treatment
● Heat treatment to eliminate internal stress:
◎ Solution treatment (1050°C water quenching)
◎ Low-temperature stress relief tempering
Step 6. Rough Casting Inspection
● 3D scanning to compare with design drawings
● Penetrant testing (PT) for surface cracks
● Spectral analysis of material composition
Step 7. CNC Machining
● 5-axis CNC machining center:
◎ Ball roundness ≤ 0.01mm
◎ Sealing surface Ra 0.4μm mirror finish
◎ Valve body passage concentricity ≤ 0.02mm
Step 8. Semi-finished Product Inspection
● Air tightness test (6 bar, 5 minutes hold)
● Key dimensions measured by coordinate measurement machine
● High-pressure water test (1.5 times working pressure)
Step 9. Assembly
● Staged assembly process:
◎ Pre-assembly of valve stem/ball
◎ Liquid nitrogen cooling for sealing ring assembly
◎ Torque calibration (±5% of standard value)
Step 10. Final Inspection
● 100% full inspection items:
◎ API598 sealing test
◎ Operational torque detection
◎ Appearance and labeling checks
● Sampling burst test (3 times pressure)
Ball Valve 3 PC Quality Assurance System
● Full traceability through MES system
● Material report attached to each valve
● SPC control for critical processes
LEADTEK 3PC Ball Valve Maintenance Guide and Operation Precautions
Zhejiang Leadtek Fluid Technology Co., Ltd. provides you with a professional 3-piece ball valve parts maintenance plan to ensure long-term stable operation and extend the service life of the valve.
I. Installation Precautions
✅ Correct Installation Steps
1.Pre-installation Check
◎ Verify the valve model, pressure rating, and medium compatibility.
◎ Remove welding slag and impurities from the pipeline to avoid damaging the sealing surface.
2.Alignment
◎ Avoid forced alignment to prevent valve body deformation.
◎ For flange connections, ensure even tightening of bolts (cross-tightening recommended).
3.Direction Confirmation
◎ Ensure the medium flow direction matches the valve’s arrow marking (except for bi-directional sealing valves).
❌ Prohibited Operations
● Do not use the valve to support the pipeline’s weight.
● Do not disassemble the valve under pressure.
II. Daily Operation Guidelines
1.Manual Valve Operation
● Open and close the valve slowly to avoid water hammer effects caused by sudden full opening/closing.
● After rotating the handle to the full open/close position, turn it back 1/8 turn to reduce sealing wear.
2.Pneumatic/Electric Valve Operation
● Regularly check the lubrication of the actuator.
● Set a reasonable opening/closing speed (recommended 3-5 seconds per stroke).
III. Regular Maintenance Plan
|
Maintenance Item |
Frequency |
Key Operation Points |
|
External Cleaning |
Monthly |
Remove surface dirt and inspect the anti-corrosion coating. |
|
Bolt Tightening |
Every 6 months |
Check for loosened flange/threaded connections. |
|
Sealing Test |
Annually |
Perform a 1.1 times working pressure holding test. |
|
Stem Lubrication |
Every 12 months |
Use food-grade lubricant (FDA certified). |
|
Comprehensive Inspection |
Every 3-5 years |
Replace valve seats/seals and inspect ball wear. |
IV. Common Fault Handling
⚠ Issue 1: Valve Internal Leakage
● Possible Causes: Damage to sealing surfaces/impurities blockage
● Solutions:
Open and close the valve fully 3-5 times to flush out impurities.
Disassemble and clean or replace the valve seat (use original factory parts).
⚠ Issue 2: Increased Operating Torque
● Possible Causes: Lack of lubrication on valve stem/packing gland too tight
● Solutions:
Add specialized grease.
Adjust packing gland bolts to the standard torque.
⚠ Issue 3: External Leakage
● Possible Causes: Worn packing/seal failure on valve body
● Solutions:
Slight leakage can be temporarily fixed by tightening the packing gland nuts.
For severe leakage, replace the graphite packing or O-ring.
V. Safety Warnings
‼ High-Risk Medium Operations
● For corrosive/toxic medium valves, prior to maintenance:
Completely release pressure.
Purge and replace pipeline contents.
Wear protective gear.
‼ Do Not Operate Under Warning Signs
● Do not disassemble bolts under pressurized conditions.
● In freezing environments, drain the cavity fluid.
✔ Precision Casting + CNC Machining – High-precision ball and seat fit to ensure sealing.
✔ 30+ Patented Technologies – Innovative design enhances durability and efficiency.
✔ Fast Delivery – In-house factory, supports customized production (size, material, certification).
✔ Global Service – Products are sold to over 30 countries including the U.S., EU, and Southeast Asia, with technical support and after-sales service.
Our Factory
Certifications
ISO9001Certificate
ISO14001 Certificate
ISO45001Certificate
CE Certification
ROSH Certification
Frequently Asked Questions
Q: What is the difference between a 2 piece and 3 piece ball valve?
A: In short, the main difference between 1, 2, and 3-piece ball valves is their body design. A one-piece ball valve has only one body portion. Two-piece ball valves have two body components threaded together or bolted together. Three-piece valves, on the other hand, have three independent components.
Q: What is the size range of a three-piece ball valve?
A: The size range of a two-piece ball valve is from 1/4 inch to 6 inches (the size range may vary depending on the connection type).
Q: What is a 3 piece ball valve made of?
A: It is made of stainless steel SS304/SS316.
Q: What is the working pressure of a three-piece ball valve?
A: The working pressure of a two-piece ball valve is PN16 and customizable.
Q: What are the features of a three-piece ball valve?
A: A three-piece ball valve (3PC Ball Valve) features a modular design and is easy to maintain. The valve body is made up of three parts, allowing for quick disassembly, cleaning, or seal replacement. It is made of high-quality stainless steel (304/316L) and precision CNC machining, ensuring high sealing performance (zero leakage) and resistance to high pressure and corrosion. It offers multiple connection types (threaded, flanged, welded, clamp) and actuation options (manual/pneumatic/electric), making it widely applicable in industries such as petroleum, chemical, food, and pharmaceuticals. Its stable structure and long service life make it an ideal choice for industrial fluid control.
Q: What is the function of a three-piece ball valve?
A: A three-piece ball valve is mainly used to precisely control the flow of fluids in a pipeline, with the modular design enabling quick disassembly and maintenance. It is suitable for harsh conditions in industries like petroleum, chemicals, and food. The valve allows for full opening/closing of the fluid by rotating the ball 90 degrees, providing zero-leakage sealing, high-pressure resistance, and corrosion resistance. It can be manually, pneumatically, or electrically operated, meeting the needs for automated control.
Q: What is a three-piece valve?
A: A three-piece valve is an industrial valve composed of a valve body and two end connection flanges/threaded parts. These parts are fastened together using bolts to form a modular structure. Its key feature is that it can be quickly disassembled and maintained (without cutting the pipeline). By rotating the internal ball 90 degrees, the valve controls the fluid flow. It also has advantages like zero leakage sealing, high-pressure, and corrosion resistance. It is widely used in pipeline systems in industries such as petrochemical, food, and pharmaceuticals, where frequent cleaning or seal replacement is required.
Q: How to disassemble a three-piece ball valve?
A: To disassemble a three-piece ball valve, simply loosen the connecting bolts of the valve body to separate the valve into three parts (two end connections and the central valve body). There is no need to remove the pipeline, which facilitates quick replacement of the valve seat, seals, or cleaning of the internal parts, greatly simplifying the maintenance process. After disassembly, check the sealing surfaces and replace any worn components. Re-tighten the bolts diagonally to restore the valve.
Q: Maintenance and Troubleshooting Tips for Ball Valves？
A: 1.Regular inspections for signs of wear or leaks.
2.Lubricate moving parts as per manufacturer recommendations.
3.Address leaks promptly to prevent system damage.
Q: What is full bore in a ball valve?
A: A full bore valve refers to a ball valve that can open completely when the actuator moves, creating a clear, unobstructed path for the fluid to pass through the pipe where the valve is used.
Q: Which is better full bore or reduced bore ball valves?
A: What Is The Difference Between Full Bore Ball Valves And Reduced Bore Ball Valves? Full bore ball valves mean the bore diameter of ball is the same as the internal diameter of pipeline, whatever the inlet or outlet. Reduced bore ball valves mean the bore is smaller than internal diameter of the pipework.
Q: What is a threaded ball valve?
A: A threaded ball valve is a a type of valve with threaded end connections designed to screw onto threaded pipes and components. They are easy to install and offer an easy and reliable way to control flow in industrial and plumbing applications.
Zhejiang Leadtek Fluid Technology Co., Ltd. is one of the most professional 3 pc ball valve manufacturers and suppliers in China. We warmly welcome you to buy customized 3 pc ball valve at competitive price from our factory. For free sample, contact us now.
Stainless Steel Air Actuated Ball Valve, Butt Weld Valve, 3 piece stainless ball valve