Metal Seat Ball Valve

Trunnion Ball Valve – Forged Steel Trunnion Ball Valve

Product  Overview

The Forged Trunnion Mounted Ball Valve is specifically designed for high-pressure, high-stress, and critical service applications. Compared with cast valves, the forged body structure provides superior mechanical strength, structural integrity, and resistance to internal defects, ensuring reliable performance under maximum rated operating pressure.

Forged materials eliminate inherent casting defects such as porosity and shrinkage, while the sufficient wall thickness, split-body construction, and high-strength tie bolts enable the valve to withstand severe pipeline stress and facilitate convenient maintenance.

All internal components are carefully designed, selected, and manufactured to ensure consistent reliability under a wide range of operating conditions.

Product Range

Body Materials:

ASTM A105, LF2/LF3,F304/304L, F316/316L,F51,INCONEL625

and other materials upon request

Nominal Diameter:

2" ~ 48"

Pressure Rating:

Class 150 ~ Class 2500

End Connections:

RF, RTJ, BW

Applicable Standards:

API 6D,API607,API6FA, ASME,ASTM, ANSI, ISO,BS5351, DIN, GB, GOST33259, etc.

Main Features

1. Forged body construction

Ensures excellent rigidity, high strength, and long-term stability under extreme pressure and temperature conditions.

2. High structural safety margin

Thick-walled body and high-strength bolting provide superior resistance to pipeline stress and pressure fluctuations.

3. Optimized internal components

Precision-engineered trim and sealing elements ensure reliable operation under various service conditions.

Design Features

1. Fireproof Structure

Designed to meet fire-safe requirements. In case of fire, metal-to-metal sealing ensures continued sealing performance and prevents media leakage.

2. Anti-static Device

Ensures electrical continuity between ball, stem, and body to safely discharge static electricity.

3. DBB (Double Block and Bleed)

Provides double isolation with a bleed function, allowing safe pressure relief and verification of sealing integrity.

4. Zero Leakage Design

High-precision sealing surfaces ensure tight shut-off and reliable sealing performance.

5. Low Operating Torque

Trunnion-mounted ball design reduces friction, enabling smooth operation and suitability for automation.

6. Emergency Sealing Device

Grease injection system allows temporary sealing restoration in emergency conditions.

7. Safety Relief Device

Prevents abnormal pressure build-up in the valve body cavity, enhancing operational safety.

8. Blow-out Proof Stem

Stem is designed to prevent ejection under internal pressure, ensuring safe operation and maintenance.

9. Various Actuation Options

Compatible with manual, pneumatic, electric, and hydraulic actuators.

10. Extension Stem Available

Extended stem design is available for buried service, cryogenic insulation, or special installation requirements.