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12″ Class150 WCB Flanged Electric Actuated Full Bore Two-Piece Trunnion Mounted Ball Valve

Port size: DN300
Application: Oil & gas, petrochemical, power, municipal
Power: Electric + manual override
Customized support: Material/actuator/seal customization, CFD simulation
Media temp.: -29°C~180°C
Brand: TIANYU
Standard: API 608, ASME B16.34
Body: WCB carbon steel
Ball: A105+ENP
Seat: RPTFE
End connection: Flange (ANSI B16.5 RF)
Design: Two-piece, trunnion-mounted, full bore
Testing: API 598 hydrostatic, helium leak
Certifications: ISO 9001, API 6D, ATEX (optional)

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Description

Specification

TIANYU 12″ Class 150 Full Bore Two-Piece Trunnion Mounted Ball Valve: Precision Control for Industrial Fluid Systems

I. Product Overview

The TIANYU 12-inch (DN300) Full Bore Two-Piece Trunnion Mounted Ball Valve features a two-piece forged body design with trunnion-mounted ball technology, integrating electric actuation with manual override. Constructed with WCB carbon steel body, A105+ENP coated ball, and RPTFE seats, it is engineered for medium-pressure applications in oil & gas, petrochemical, power generation, and municipal industries. With a full bore (FB) flow path, spring-loaded seats, and bidirectional sealing capabilities, the valve delivers reliable performance across temperatures from -29°C to 180°C, balancing automation efficiency with maintenance flexibility.

II. Core Advantages

(A) Two-Piece Design: Compact & Serviceable

Symmetrical Forged Construction:
The two-piece body, joined by high-strength bolts, ensures coaxiality within 0.05mm. This design reduces weight by 15% compared to three-piece valves, saving installation space while enabling 40% faster maintenance via unilateral flange disassembly.
Dual-Seal Redundancy:
Metal-to-metal body joints with flexible gaskets provide secondary sealing, meeting ASME B16.34 requirements for high-pressure applications.

(B) Trunnion-Mounted Ball with Spring-Loaded Seats

Bidirectional Block & Bleed (DBB):
Spring-loaded RPTFE seats achieve zero leakage (ANSI/FCI 70-2 Class V) in both flow directions. A vent/drain port prevents cavity overpressure, enhancing safety in critical applications.
Wear Compensation:
Spring-loaded seats maintain sealing integrity even with up to 0.2mm of wear, extending service life by 30% and reducing maintenance costs.

(C) Full Bore Flow Path: Efficiency Unleashed

Equal Diameter Flow:
The unobstructed bore (≥300mm) matches pipeline diameter, minimizing pressure drop (Cv ≥1,200) and turbulence. Ideal for high-flow applications like gas transmission and refinery feed lines.
Smooth Internal Surface:
Precision-machined internals (Ra ≤1.6μm) prevent media accumulation, reducing clogging risks and ensuring long-term reliability.

(D) Intelligent Electric Actuation System

High-Performance Actuator:
IP66-rated intelligent actuator with 4-20mA/Modbus communication, ±1° positioning accuracy, and ≤15-second full-stroke time. Built-in overload protection and temperature compensation ensure stable operation in harsh environments.
Manual Override:
Worm gear handwheel with 1:30 ratio and ≤80N·m torque (API 609 compliant) enables emergency operation during power outages.
Real-Time Monitoring:
Integrated position sensors and fault diagnostics provide remote status updates, enabling predictive maintenance and reducing downtime.

(E) Material Excellence

Component	Material	Key Properties
Body	WCB Carbon Steel	Tensile strength ≥485MPa, Charpy V-notch impact energy ≥27J at -29°C
Ball	A105+ENP Coating	Surface hardness HV500-600, 3x improved wear resistance, salt spray tested
Seats	RPTFE	Compression set ≤10% (150°C ×72h), resistant to hydrocarbons and aqueous media
Stem	17-4PH Stainless Steel	Nitrided surface (0.3mm depth), torsional strength ≥900MPa, blowout-proof design

III. Technical Specifications

Parameter	Standard Rating	Customization Options
Size	12″ (DN300)	8″-24″ (DN200-DN600, custom sizes available)
Pressure Class	Class 150 (PN2.0MPa)	Class 300/600 (PN5.0/10.0MPa, upgraded design)
End Connection	Flange (ANSI B16.5 RF)	Butt-weld (ANSI B16.25), socket-weld
Design Standards	API 608, ASME B16.34	CE, ATEX (explosion-proof options)
Testing	API 598 (1.5x hydrostatic)	Fire-safe testing (API 607)
Actuation	Electric + Manual Override	Pneumatic/hydraulic actuators available

Product Overview

IV. Manufacturing & Quality Assurance

(A) Precision Manufacturing Process

Two-Piece Body Fabrication:
- Forged and CNC-machined components joined via dowel pins and high-strength bolts, ensuring ≤0.05mm coaxiality.
- WCB bodies undergo normalizing + tempering for uniform mechanical properties. NDT includes 100% RT (ASME SE-164 Level B) and MT (ASME SE-709) with defects ≤ASTM E446 Level 2.
Ball & Stem Machining:
- A105 forged balls machined to ≤0.02mm roundness with Ra ≤0.8μm sealing surfaces.
- ENP coating (≥0.05mm thickness) provides corrosion resistance exceeding 500-hour salt spray testing.
- Stems feature cold-rolled threads (6g accuracy) and nitrided surfaces (0.3-0.5mm depth).
Seat Assembly & Testing:
- Hydraulically preloaded RPTFE seats with ≤0.05mm sealing clearance. Each valve undergoes 1.5x hydrostatic testing (30-minute hold) and helium leak testing (≤1×10⁻⁴ mbar·L/s).
- Sampled valves complete 100,000 cycle life testing with ≤15% torque decay and Class V sealing retention.

(B) Quality Traceability & Certification

Material Certification: Furnaces records, CMA-certified chemical analysis, and third-party PMI testing available.
System Compliance: ISO 9001, API 608, ATEX II 2G Ex db IIC T4 (for explosion-proof actuators).
Warranty: 24-month comprehensive warranty with unconditional replacement for manufacturing defects.

Valve Details

VI. TIANYU Customization Capabilities

With 15+ years of industrial valve expertise, TIANYU offers tailored solutions for the 12″ Class 150 two-piece ball valve:

Material Upgrades: CF8M stainless steel, duplex steel for corrosive media.
Sealing Solutions: Stellite hard seats for high-temperature/abrasive applications.
Actuation Expansion: Pneumatic/hydraulic actuators, enhanced explosion-proof ratings.
CFD Optimization: Flow simulation for custom bore designs and reduced turbulence.
Rapid Delivery: 22-day standard lead time, 15-day expedited service for small batches.
Global Support: Six technical centers providing lifecycle management, 48-hour spare parts delivery, and AR-assisted maintenance.

Application

V. Product Application Scenarios

(A) Petrochemical Industry

In refinery atmospheric/vacuum unit oil pipelines (350℃, Class 150), TIANYU’s WCB body resists medium-temperature oil corrosion, while the full-bore flow path ensures smooth transfer of residues and gasoline. The intelligent actuator integrates with DCS systems for precise fractionator feed regulation, reducing annual energy losses by ~8% in one petrochemical project.

(B) Natural Gas Transmission

At gas distribution stations in long-distance pipelines, the Class 150 WCB ball valve handles natural gas (-20℃, 1.6MPa) with pressure regulation. The DBB function prevents upstream/downstream leakage, and the handwheel ensures supply continuity during power outages. In a West-East Gas Pipeline branch project, the valve achieved 2,000 start-stop cycles without leakage, extending maintenance intervals to 3 years.

(C) Power Generation

In thermal power plant demineralized water pipelines (120℃, 1.0MPa), the PTFE seal meets zero-leakage requirements for clean media. The actuator’s Modbus communication integrates with the plant’s DCS, enabling automatic makeup water control for demineralized water tanks. In a 300MW unit application, the valve’s ≤8-second response time matches load changes.

(D) Municipal Energy

For gas pressure regulation stations (natural gas, 1.2MPa) and district heating networks (hot water, 95℃, 1.6MPa), flange connections enable quick installation, and WCB resists environmental corrosion. The manual override suits municipal maintenance needs, with continuous winter operation in a provincial capital’s heating project.

Our Strengths

Best Quality Industrial Valve Solutions For You

QUALITY WARRANTY

A warranty of 18 months after delivery or 12 months after installation is provided by TianYu for all supplied valves.

FAST LEAD TIME

General lead time is around 8 weeks(conventional valves) with high efficient production process and regular expedition procedure.

COST-EFFECTIVE PRICE

With A quality but cost-effective supply chain, we offer client with reasonable price and low aftersales cost, to build a healthy and long term partnership.

VALUE ADDED SERVICE

From early bidding to final shipment we have a professional team standby to support client on commercial, technical, quality and transportation issues.

Industrial Applications

Petrochemical Industry

In the petrochemical industry, valves are used to control fluid flow, pressure, and prevent accidents. They are capable of enduring high temperatures and pressures in refinery environments, ensuring safe and smooth operation of processes.

Power Industry

In the power industry, valves are used to control the flow of steam, water, and oil. Globe valves and gate valves in steam pipelines ensure smooth steam transportation, while butterfly valves are commonly used to regulate flow.

Food & Beverage Industry

In the food and beverage industry, valves are used for fluid transportation and control. These valves need to meet sanitary standards to ensure the safety and quality of food products.

Environmental Protection Sector

In the environmental protection sector, valves are used in wastewater treatment systems to control the discharge of sewage, ensuring the effectiveness of wastewater treatment. They play an important role in environmental protection and sustainable development.

Factory Capacity

China Professional Valve Manufacturer & Supplier

Years

Production Equipments

Manufactuing Area

0 m²

Annual Production Value

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