Three Piece Full Port Threaded Ball Valves – 316 Stainless Steel

Three piece full port threaded ball valves are designed for inline maintenance, cleaning, and reliable shut-off performance in industrial piping systems. The three-piece body construction allows the center section to be removed while the threaded end connections remain installed, making these valves ideal for applications requiring routine servicing.

Manufactured from 316 stainless steel, these threaded 3 piece ball valves provide corrosion resistance, durability, and dependable performance in water, oil, gas, and industrial fluid handling and process systems. Their full port design maintains maximum flow capacity with minimal pressure drop, while female NPT threaded ends allow installation into standard threaded piping systems.

Advantages:

• ● Designed for easy cleaning and inline servicing without removing the valve from the pipeline

Key Features:

• ● Suitable Media: Water, Oil, and Gas (WOG)
• ● Threads: Female NPT
• ● Port: Full port design for maximum flow capacity
• ● Pressure Rating: 1000 WOG (6.4MPa)
• ● Temperature Range: -4°F to 302°F (-20°C to 150°C)
• ● Stem Design: Blow-out proof
• ● Handle: Lever style with removable locking device
• ● Seats and Seals: PTFE (Teflon)
• ● Body Material: 316 Stainless Steel (CF8M)
• ● Non-wetted Components: 304 Stainless Steel

Threaded 3 Piece Ball Valve Dimensions

Dimensions vary by valve size from 1/4" through 4". Refer to the dimensional drawings below for sizing and installation reference.

Threaded 3 Piece Ball Valve Material List

Material composition details are provided above and may vary slightly by valve size.

Threaded 3 Piece Ball Valve Pressure Chart

Pressure ratings are based on operating temperature conditions; refer to the chart below for application guidance.

What is a Threaded 3 Piece Ball Valve?

A threaded 3 piece ball valve is a serviceable shut-off valve used in industrial piping systems with female NPT end connections and a removable center body that houses the ball and seats. The three-piece construction allows maintenance, inspection, or seat replacement to be performed without disconnecting the threaded end connections from the pipeline.

This design is widely used in industrial and process systems where easy servicing, reduced downtime, and dependable shut-off performance are required.

3 Piece vs 2 Piece Ball Valves

The primary difference between a 3 piece ball valve and a 2 piece ball valve is serviceability. A three-piece valve allows the center body section to be removed while the threaded end connections remain attached to the pipeline, enabling inline maintenance and reducing downtime.

Two-piece ball valves are more compact and cost-effective, but typically require removal from the pipeline for internal servicing. Three-piece ball valves are preferred in applications requiring frequent cleaning, inspection, or seal replacement.

Why Choose Threaded 3 Piece Ball Valves

Threaded 3 piece ball valves are designed for applications where reliability, serviceability, and long-term performance are critical. Their three-piece body construction allows internal components to be accessed without removing the valve from the pipeline, reducing maintenance time and operational downtime.

• Inline maintenance without removing pipe connections
• Reduced downtime during servicing and cleaning
• Full port design maintains maximum flow capacity
• Durable 316 stainless steel construction for corrosion resistance

When to Choose Threaded 3 Piece Ball Valves

Threaded 3 piece ball valves are best suited for systems where regular servicing, inspection, or cleaning is required and where installation into threaded piping systems is preferred.

• Applications requiring frequent maintenance or cleaning
• Systems where inline servicing reduces downtime
• Installations using standard female NPT threaded connections
• Industrial and process systems handling demanding fluids

Frequently Asked Questions

What is a 3 piece ball valve used for?

3 piece ball valves are used in applications where maintenance, cleaning, or inspection is required without removing the valve from the pipeline.

What type of end connection do these valves use?

These valves use female NPT threaded ends for installation into standard threaded piping systems.

What is the advantage of a 3 piece ball valve?

The main advantage is serviceability. The center section can be removed while the valve remains installed, reducing downtime and simplifying maintenance.

Are 3 piece ball valves full port?

Yes, these valves feature a full port design, allowing unrestricted flow and minimal pressure drop.

How do 3 piece ball valves compare to 2 piece valves?

3 piece valves allow inline servicing, while 2 piece valves are more compact and typically require removal from the pipeline for internal maintenance.

What pressure rating do these valves have?

These valves are rated to 1000 WOG, making them suitable for water, oil, and gas applications within that pressure range.

Other Stainless Steel Ball Valve Types

In addition to threaded 3 piece ball valves, other stainless steel ball valve designs are available to suit different installation and maintenance requirements.

• 1 Piece Stainless Steel Ball Valves – compact valves for general shut-off applications.
• 2 Piece Full Port Threaded Ball Valves – durable valves for standard industrial use where servicing is less frequent.
• 3 Piece Stainless Steel Ball Valves – broader category including threaded, socket weld, and sanitary configurations.

Specifications: