4″*3″-1500LB F316L 3-Piece Trunnion Ball Valve

TECHNICAL DATA SHEET

Product: 3-Piece Trunnion Mounted Ball Valve – Metal Seated
Size: 4″ x 3″ (Reducer Bore / Reduced Port)
Pressure Class: Class 1500
Body Material: F316L (ASTM A182 F316L)
Seat Type: Metal‑to‑Metal Seated
Design: 3-Piece Body, Trunnion Ball

1. Basic Specifications

2. Main Features

• Trunnion Mounted Ball: Ball is supported by upper and lower trunnion bearings, reducing operating torque and ensuring smooth operation under high differential pressure. Ideal for large sizes and high‑pressure applications.
• Reduced Bore (4″ x 3″): 4″ flanged connections with a 3″ internal bore reduces weight and cost while maintaining adequate flow capacity.
• 3-Piece Body Construction: Center body with bolted end caps allows easy in‑line maintenance – seats, ball, and seals can be accessed without removing the entire valve from the pipeline.
• Metal‑to‑Metal Seating: Ball and seats are hardfaced with wear‑resistant alloys (e.g., tungsten carbide, chromium carbide, or Stellite). Provides exceptional durability in high‑temperature, abrasive, and erosive services.
• Spring‑Loaded Seats: Metal seats are typically pre‑loaded with Inconel springs to maintain continuous contact with the ball, ensuring tight shut‑off even under low pressure or thermal cycling.
• Double Block & Bleed Capability: With two independent metal seats, the cavity between seats can be vented or monitored.
• Anti‑Static Device: Ensures electrical continuity between ball, stem, and body.
• Blowout‑Proof Stem: Stem is designed to prevent ejection under pressure.

3. Material List (Metal Seated Configuration)

Note: Hardfacing materials can be customized based on media and temperature (e.g., Stellite 6, Stellite 21, tungsten carbide).

4. Hardfacing Options for Metal Seats

5. Dimensions & Structural Data (Flanged Ends)

Note: Final dimensions to be confirmed by manufacturing drawings.

6. Design & Testing Standards

7. Metal Seated vs. Soft Seated Comparison

8. Operating Torque & Actuator Sizing

• Higher Torque Requirement: Metal seated valves require significantly higher torque than soft seated valves due to metal‑to‑metal contact and spring preload.
• Trunnion Advantage: Despite higher torque, the trunnion design reduces torque compared to a floating ball of the same size.
• Safety Factor: Actuator output torque should be at least 1.3 – 1.5 times the maximum measured valve torque.
• Breakaway Torque: Especially critical after prolonged closure; may be higher than running torque.

9. Typical Applications

• High‑Temperature Processes: Refinery thermal cracking units, FCCU slurry, steam systems up to 500°C.
• Abrasive Media: Catalyst lines, mining slurries, sand handling.
• Sour Service: With NACE MR0175 materials, suitable for high‑pressure sour gas.
• Offshore & Subsea: Corrosion‑resistant F316L with metal seats for reliability in demanding environments.
• Chemical Processing: Handling corrosive fluids at elevated temperatures.

10. Ordering Information

When ordering, please specify:

• Size: 4″ x 3″ (Reduced Bore)
• Pressure Class: Class 1500
• Body Material: F316L
• Seat Type: Metal Seated (specify hardfacing: WC / CrC / Stellite)
• End Connections: Flanged – ASME B16.5 Class 1500 (RF or RTJ)
• Optional Features: NACE MR0175, cryogenic trim (if required), spring‑loaded seats, actuator mounting

This data sheet reflects the metal seated configuration for the 4″ x 3″ – 1500LB F316L 3-Piece Trunnion Ball Valve. For full bore versions, soft seated options, or additional customizations, please contact us with your specific requirements.

GUATANTEE:

SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.