Three Piece Full Port Ball Valve
Three Piece Full Port Ball Valve
Three-piece full-port ball valves provide quarter-turn on/off isolation for industrial piping systems. The full-bore passage supports flow through the ball opening, while the removable center section provides access to internal components for inspection and maintenance.
Key Product Features
Full-Port Flow Passage: The full-bore design provides a flow path through the ball opening. Actual pressure drop depends on valve geometry and operating conditions.
Three-Piece Body: The bolted construction allows access to the ball, seats, and seals. In-line servicing depends on the connection type and installation layout.
Quarter-Turn Operation: A 90-degree rotation provides on/off flow isolation. Continuous throttling requires approval for the specific valve design and service conditions.
Materials and Configuration Options
Body and Trim Materials: Stainless steel, carbon steel, and selected alloy options may be available, subject to model specifications and material compatibility.
Seat and Seal Options: PTFE, RPTFE, PEEK, and other specified materials can be evaluated according to fluid compatibility, pressure, and temperature.
Manual or Automated Operation: Lever-operated valves and compatible pneumatic or electric actuators may be available. Confirm mounting compatibility and required operating torque.
Technical Specifications
|
Specification |
Options / Requirements |
|
Valve Type |
Three-Piece Full-Port Ball Valve |
|
Nominal Size |
DN8–DN100 / NPS 1/4–4, subject to model availability |
|
Port Design |
Full Bore |
|
Body Materials |
Stainless steel, carbon steel, or specified alloys |
|
Ball and Stem |
Material grade to be confirmed by model |
|
Seat Materials |
PTFE, RPTFE, PEEK, or other specified options |
|
End Connections |
Threaded (NPT/BSPT), socket weld, butt weld, or flanged, where available |
|
Pressure Rating |
Confirm by size, connection type, and applicable rating system |
|
Operating Temperature |
Confirm against the selected body, seat, and seal configuration |
|
Actuation |
Manual; pneumatic or electric options, subject to compatibility |
|
Design and Test Standards |
Confirm applicable standards for the selected model |
|
Documentation |
Material certificates and test reports as specified in the purchase order |
Typical Applications
Chemical Processing: Select compatible wetted materials according to fluid composition, concentration, and operating conditions.
Industrial Utilities: Evaluate for water, compressed air, and thermal fluids within the specified pressure and temperature limits.
Oil and Gas / Petrochemical: Confirm material requirements, pressure ratings, fire-safe qualification, and project specifications.
OEM Skids and Equipment: The serviceable body design can provide access to internal components during planned maintenance, subject to installation requirements.
Quality Control and Documentation
Material Traceability: Material Test Certificates (MTCs), including EN 10204 Type 3.1 where specified and available, can support material verification.
Pressure and Leakage Testing: Confirm the applicable test standard, test medium, acceptance criteria, and inspection scope for the selected valve.
Inspection Documents: Specify the required test reports, drawings, material records, and third-party inspection requirements in the RFQ.
Customization and RFQ Requirements
Valve Requirements: Size, quantity, pressure rating, and end connection standard.
Operating Conditions: Fluid or media, working pressure, design pressure, and operating temperature.
Material and Sealing: Body, ball, stem, seat, and seal material requirements.
Operation and Compliance: Manual or actuated operation, applicable standards, fire-safe requirements, and required documentation.
Frequently Asked Questions
Q: What are the main advantages of a three-piece full-port ball valve?
A: It combines a full-bore flow passage with a body construction that provides access to internal components for inspection and servicing.
Q: How do I choose the right seat material?
A: Seat selection depends on the process fluid, pressure, temperature, and sealing requirements. Confirm compatibility and allowable operating limits for the selected model.
Q: Can the valve be serviced while installed?
A: Some configurations allow the center body to be removed while the end connections remain installed. Confirm the connection design, available space, and manufacturer's maintenance procedure before servicing.
Q: Can the valve be fitted with an actuator?
A: Pneumatic or electric actuation may be available for compatible models. Confirm the mounting interface, required torque, and operating conditions.
Q: What documentation should be included with an order?
A: Specify the required material certificates, pressure and leakage test reports, drawings, and inspection records in the purchase order. Availability depends on the selected model and agreed inspection scope.
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