Call Us 24/7

+91-8591096714

Send Us Mail

[email protected]

Established

In the year 1988

Case Study: Ball Valves in High-Temperature Applications

Industry: Petrochemical
Application: Hot Oil Line (Thermal Fluid Circuit)
Temperature Range: 250°C – 350°C
Valve Type: Metal-Seated Fire-Safe Trunnion-Mounted Ball Valve
Standard Compliance: API 6D, API 607 (Fire-Safe), ISO 5211 (Actuator Interface)
Client Location: Gujarat, India
Supplied By: Perfect Engineers

Table of Contents

Background

A large petrochemical refinery in Gujarat required a reliable valve solution for its hot thermal oil system. The application involved:

  • Operating temperatures up to 350°C
  • Flammable hydrocarbon media
  • High pressure and continuous cycling
  • Fire safety compliance
  • Remote control via actuators

Their existing soft-seated ball valves failed within months due to seat deformation, leakage, and severe torque resistance.

Our Solution – High-Temperature Ball Valve Upgrade

Product Supplied

  1. Trunnion-Mounted Ball Valves
  2. Metal-to-Metal Seats (Stellite-coated)
  3. Blowout-Proof Stem with Anti-Static Device
  4. Graphite Fire-Safe Packing and Seals
  5. ISO 5211 Pad for Direct Actuator Mounting
  6. Pressure Rating: Class 300
  7. Temperature Rating: Up to +425°C

Design Modifications Made

  1. Replaced PTFE/RPTFE with metal seats + graphite backup
  2. Optimized stem seal design using live-loaded spring-loaded packing
  3. Included drain and vent ports for API 6D compliance
  4. Reduced torque with precision-machined trunnion bearings
  5. Installed pneumatic actuators with fail-safe positioners

Challenges Faced

Parameter Issue Identified
Temperature PTFE/RPTFE seats melted/deformed at high temp
Shut-Off Leakage occurred due to seat damage
Safety Existing valves weren’t fire-safe certified
Automation Actuators were struggling due to high torque
Maintenance Frequent valve failures caused downtime

Contact Us for Pricing & OEM Support

Call

+91-9004860491

Website

www.perfectqrc.com

Key Takeaways

  1. Soft-seated valves are not suitable above 230–250°C in continuous operation
  2. For critical shut-off in fire-prone zones, always opt for API 607 or 6FA certified fire-safe valves
  3. Metal seats + graphite sealing ensure durability in high-heat and abrasive media
  4. Proper actuator matching (torque, ISO pad) is critical to avoid burnout or misoperation

We Can Help With

  • Valve selection for thermal fluid & steam lines
  • API 607/6FA fire-safe certifications
  • Actuated high-temperature valve packages
  • Maintenance-free high-cycle design

FAQs – High-Temperature Ball Valve Use

Yes—especially stellite or hard-faced seats for abrasion and thermal stress resistance.

Pneumatic actuators with high-temperature kits, or gear-operated valves with thermal barriers.

Pneumatic actuators with high-temperature kits, or gear-operated valves with thermal barriers

Yes—especially near fuel lines, heater circuits, or areas covered by safety audits (OSHAS/API standards).

Ready to Connect Faster, Safer, Smarter?

Explore Configurations, Compare Materials, and Get Prices Fast
We serve purchase heads, OEMs, and end-users with tailored Case Study: Ball Valves in High-Temperature Applications recommendations and commercial pricing.