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Three-Piece Ball Valve – Maintenance-Friendly Design for Critical Applications

When your process demands regular cleaning, seat replacement, or CIP/SIP compatibility, the Three-Piece Ball Valve is the best choice. At Perfect Engineers, we design and manufacture high-performance three-piece ball valves that offer easy inline servicing, superior sealing, and automation compatibility, making them ideal for food, pharma, chemical, paint, and utility systems.

Table of Contents

Three-Piece Ball Valve

What is a Three-Piece Ball Valve?

A Three-Piece Ball Valve consists of two end caps and a central body section that houses the ball, seats, and stem. These parts are bolted together, allowing the central part to be removed for maintenance or cleaning—without disturbing the piping system.

This design is a favorite in industries where downtime is expensive and valves must be serviced, cleaned, or inspected frequently.

Key Features of Our Three-Piece Ball Valves

  1. Inline maintenance without pipe disassembly
  2. Cavity-free / cavity-filled options available
  3. Compatible with automation (ISO 5211 mount)
  4. High cycle life with blowout-proof stem
  5. Full bore design ensures minimal pressure drop
  6. Available with BSP/NPT threads, flanged ends, or welded connections
  7. FDA-compliant seats for food and pharmaceutical use

Technical Specifications

Parameter Details
Sizes Available ½” to 6”
Body Material SS304, SS316, WCB, Brass
End Connections Threaded, Flanged, Socket Weld, Butt Weld, Tri-Clamp
Pressure Rating Up to 1000 PSI / PN16 / Class 150-300
Temperature Range -20°C to +220°C (Graphite) / +180°C (RPTFE)
Seat Materials PTFE, RPTFE, TFM, Graphite, Delrin
Operation Manual, Pneumatic, Electric
Design Standards ASME B16.34, ISO 5211, EN 12516
Testing Standards API 598, EN 12266

 

 

 

Contact Us for Pricing & OEM Support

Call

+91-9004860491

Website

www.perfectqrc.com

Common Applications

  1. Pharmaceutical processing (CIP/SIP)
  2. Food & beverage lines
  3. Paints, inks, dyes, and adhesives
  4. Chemical reactors and batch processes
  5. Solvent transfer & mixing tanks
  6. Skid-mounted dosing and metering systems
  7. Steam and utility pipelines

Material & Seat Options

Component Options Use Case
Body SS304 / SS316 / WCB / Monel Water, chemicals, steam, acids
Seats PTFE / RPTFE / Graphite / TFM General to high-temp or sterile use
End Style Threaded / Flanged / Welded / Clamp OEM, pharma, utility, CIP systems

Installation & Maintenance Tips

  • Tighten bolts in a criss-cross pattern for even pressure
  • Use proper gasket (Graphite/PTFE) for flanged versions
  • Always clean valve before reassembly
  • Lubricate stem if valve cycles frequently
  • Never weld valve without removing PTFE seals

FAQs

It fills the dead space between ball and body to prevent contamination—essential in food/pharma/paint systems.

Yes. All models come with ISO 5211 pads and actuator support.

Absolutely. We offer spare kits for easy on-site replacement.

We supply seats and seals with FDA/USP Class VI compliance for food and pharma use.

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We serve purchase heads, OEMs, and end-users with tailored Three-Piece Ball Valve – Maintenance-Friendly Design for Critical Applications recommendations and commercial pricing.