The 1/4 4 inch three-piece ball valve is one of the most widely used valves in recent years. The 1/4 4 inch three-piece internally threaded ball valve is a new type of ball valve with some unique advantages of its own structure. For example, the switch has no friction, and the seal is not easy to wear. , The opening and closing torque is small.
Products Description
We offer high-quality 1/4–4 inch 3-PC Ball Valves designed for industrial fluid control systems, manufactured with precision stainless steel materials. Our 3-PC ball valves provide reliable performance, durable construction, and easy maintenance for a wide range of demanding applications.
As an experienced China 3-PC Ball Valve supplier, we focus on quality, bulk supply, and customization support to meet your engineering and distribution needs.
Our 1/4–4 inch 3-PC ball valves cover a wide size range from 1/4″ to 4″, making them suitable for small-scale piping systems to mid-sized industrial lines.
The 3-piece body design allows quick access to internal components for maintenance or seat replacement without removing the valve from the pipeline — saving time and reducing downtime.
Key features of our 3-PC ball valves include:
✔ 3-piece bolted body for easy maintenance
✔ Full and reduced port options for accurate flow control
✔ Multiple end connections (threaded, socket weld, flanged)
✔ Precision machining for tight sealing and long service life
Whether you are a distributor, OEM partner, or industrial buyer, our range of 1/4–4 inch 3-PC Ball Valves delivers consistent quality and performance.
1. Broad Size Coverage (1/4″ to 4″)
From compact instrumentation lines to larger pipeline sections, our 1/4–4 inch 3-PC ball valves offer flexible sizing options suitable for many configurations.
This wide 1/4–4 inch range ensures you can standardize valves across different systems with consistent performance and maintenance procedures.
2. 3-Piece Design for Easy Maintenance
The three-piece construction makes this valve easier to:
● Service in place
● Replace worn seals
● Inspect internal components
● Reduce downtime
Compared to 1-piece or 2-piece valves, 3-piece valves significantly reduce labor costs over the valve lifecycle.
3. Stainless Steel for Corrosion Resistance
Our stainless steel 3-PC ball valves are built using CF8 / CF8M cast materials, providing:
● Excellent corrosion resistance
● Strong durability
● Compatibility with water, oil, gas, and chemical media
CF8M (equivalent to 316 SS) is especially popular for corrosive environments like chemical processing and marine systems.
4. Precision Machined Seats & Tight Sealing
High-precision machining and quality sealing materials (PTFE / RPTFE) ensure:
● Low leakage rates
● Smooth operation
● Long service intervals
● Stable performance under high pressure
This makes them ideal for both batch systems and continuous processes.
Our 1/4–4 inch 3-PC ball valves are widely used in:
● Industrial water and wastewater systems
● Oil & gas distribution lines
● Chemical processing plants
● HVAC systems and heating loops
● Food & beverage processing
● Pharmaceutical pipelines
● Compressed air networks
● Factory automation systems
With their robust design and material versatility, these valves are suitable for industrial and commercial fluid handling.
Material List
ITEM | PART | MATERIAL | QTY | |||
1 | BODY | A216-WCB | A351-CF8 | A351-CF8M | 1 | |
2 | BALL | 304 | 304 | 316 | 1 | |
3 | SEAT | PTFE/RPTFE | 2 | |||
4 | THRUST WASHER | PTFE | 1 | |||
5 | GASKET | PTFE | 2 | |||
6 | PACKING | PTFE | 1 | |||
7 | GLAND NUT | 304 | 1 | |||
8 | STEM | 304 | 304 | 316 | 1 | |
9 | SPRING WASHER | 304 | 1 | |||
10 | NUT | 304 | 1 | |||
11 | HANDLE | 304 | 1 | |||
12 | LOCK | 304 | 1 | |||
13 | HANDLE COVER | PLASTIC | 1 | |||
14 | CAP | A216-WCB | A351-CF8 | A351-CF8M | 2 | |
15 | SPRING WASHER | 34 | 304 | 304 | 4(6) | |
16 | NUT | 304 | 4(6) | |||
17 | BOLT | 304 | 304 | 304 | 4(6) | |
DIMENSION TABLE
SIZE | Φd | L | H | P | D | W | N.M | KGS | |
DN6 | 1/4’’ | 12.5 | 51 | 43.5 | 9.6 | 14.1 | 103 | 5 | 0.28 |
DN10 | 3/8’’ | 12.5 | 51 | 44.5 | 9.6 | 17.6 | 103 | 5 | 0.28 |
DN15 | 1/2’’ | 15 | 63 | 50 | 9.6 | 21.7 | 103 | 6 | 0.45 |
DN20 | 3/4’’ | 20 | 71 | 59 | 12.7 | 27.1 | 127 | 10 | 0.60 |
DN25 | 1’’ | 25 | 80 | 61 | 12.7 | 33.8 | 127 | 12 | 0.81 |
DN32 | 1-1/4’’ | 32 | 94 | 79 | 12.7 | 42.5 | 154 | 17 | 1.44 |
DN40 | 1-1/2’’ | 38 | 103 | 83 | 12.7 | 48.6 | 154 | 30 | 1.72 |
DN50 | 2’’ | 50 | 126 | 94 | 15.8 | 61.6 | 195 | 48 | 2.73 |
DN65 | 2-1/2’’ | 62 | 158 | 135 | 15.8 | 77 | 244 | 58 | 5.45 |
DN80 | 3’’ | 76 | 179 | 144 | 24 | 90 | 244 | 96 | 7.65 |
DN100 | 4’’ | 94 | 213 | 149 | 24 | 115.2 | 285 | 124 | 15.78 |
Investment castings for body and cap
Internal entry blow-out proof stem
Pressure Rating:1000PSI(PN63)
Thread End: ANSI B2.1,BS21,ISO7/1
Working Temperature:-25℃~+180℃
Material:CF8M,CF8,CF3M,WCB
