Top Entry Orbit Style Trunnion Ball Valve | NPS 14”x12” Class 150# RF Bare Stem
Top entry orbit style trunnion ball valves are widely recognized for their robust construction, reliable zero-leakage performance, and convenient on-site maintenance, serving as a critical flow control solution for oil & gas, petrochemical, and industrial pipeline systems. Designed with a professional orbit sealing mechanism and trunnion-mounted structure, this valve delivers stable operation under medium and high-pressure working conditions while greatly reducing daily maintenance costs.
This article introduces the full specifications and core features of our custom NPS 14”×12” Class 150# top entry orbit trunnion ball valve, covering body structure, material configuration, connection type and standard technical parameters for engineering selection and project procurement reference.
Core Product Specifications
We adopt high-standard industrial materials and standardized structural design to ensure excellent corrosion resistance, wear resistance and structural stability of the valve in harsh working environments. All materials comply with international industrial standards to guarantee long-term service life and safe operation.
Size & Pressure Class
Body Material
Ball Material: A182 F304 + Ni60 (Duplex wear-resistant and anti-corrosion composite structure, enhancing sealing surface durability)
Stem Material: A182 F6A or higher grade (High-strength stainless steel, anti-rust, anti-fatigue, suitable for frequent opening and closing operations)
Seat Material: A182 F304 + Ni55 (High-precision sealing material, realizing tight shutoff and zero leakage performance)
Bolt Material: B7/2H (High-strength alloy steel bolts, ensuring stable fastening and pressure resistance)
Connection Type: Flanged RF (Raised Face) – Standard flange connection for easy installation and pipeline matching
Stem Design: Bare Stem (Compatible with manual handle, electric actuator, pneumatic actuator and various driving devices)
Key Advantages of Top Entry Orbit Trunnion Ball Valve
1. Convenient Online Maintenance
Different from side-entry ball valves, the top entry structure allows direct access to internal components including ball, seat and stem by removing the top bonnet. The valve can be inspected, repaired and replaced without dismounting from the pipeline, effectively shortening maintenance downtime and reducing project operation costs.
The unique orbit mechanical sealing structure avoids friction and scratch between the ball and seat during operation. It realizes precise orbital closure, ensures bubble-tight zero leakage, and adapts to media with tiny impurities. The Ni-based alloy overlay on sealing surfaces greatly improves wear resistance and corrosion resistance.
2. Superior Orbit Sealing Performance
3. Stable Trunnion Mounted Structure
The trunnion fixed ball design shares pipeline pressure load, prevents the ball from extruding the seat under high pressure, reduces operating torque, and protects the sealing structure. This design is more suitable for large-diameter and long-term continuous working conditions compared with floating ball valves.
4. High Standard Material Matching
All pressure-bearing parts and key moving parts adopt ASTM standard materials. WCB valve body ensures overall structural rigidity; F304 stainless steel with Ni alloy overlay enhances sealing stability; high-grade F6A stem and B7/2H bolts guarantee the valve’s overall safety and reliability in long-term operation.
Application Scenarios
This Class 150# 14×12 inch top entry orbit trunnion ball valve is widely applicable for industrial pipeline systems in oil and gas transmission, chemical processing, power plants, water treatment and petrochemical industries, especially suitable for working conditions requiring high sealing performance, frequent operation and convenient maintenance.
Customization Support
We support customized size, pressure class, material configuration, actuator matching and special structural design of top entry orbit trunnion ball valves according to customer project requirements, providing one-stop valve solutions for industrial fluid control systems.
Keywords: Trunnion Ball Valve, Top Entry Ball Valve, Orbit Style Ball Valve, 14×12 Inch Class 150 Ball Valve, WCB Trunnion Ball Valve, RF Flanged Bare Stem Ball Valve
