Top-Entry Ball Valve with PEEK Seat, Full Bore, and Turbine Operation

This product is a highly specialized Top-Entry Fixed Ball Valve designed for critical applications requiring easy in-line maintenance, high flow capacity, and robust temperature/chemical resistance provided by PEEK seats. The Turbine Operation (Gear Operator) indicates the valve is sized for high pressure or large diameters, necessitating mechanical assistance for actuation.

📋 Key Features & Specifications

Parameter	Detail / Standard	Benefit
Valve Type	Fixed Ball Valve (Trunnion Mounted)	High performance and reliability in large/high-pressure systems.
Operation	Turbine Operation (Gear Operator)	Reduces the required operating torque for large or high-pressure valves.
Seat Material	PEEK (Polyether Ether Ketone)	Exceptional resistance to high temperature and harsh chemicals; ideal for demanding services.
Port Design	Full Bore (全通径)	Unrestricted flow, minimizing pressure drop and allowing for pigging.
Body Material (Example)	$\text{F}51$ (Duplex Stainless Steel)	High strength and superior corrosion resistance, especially in chloride environments.
Size Range	$\text{2}''$ to $\text{48}''$	Wide industrial range.
Pressure Class	$\text{ASME CL} 150, 300, 600$ ( $\text{PN}$ Design available)	High-pressure rating capability.
Structure	2-piece or 3-piece	Refers to the body assembly.

⭐ Design and Compliance Standards

Standard Category	Applicable Codes
Valve Design	$\text{API} 6\text{D}, \text{BS} 5351, \text{ASME B} 16.34$
Face-to-Face Length	$\text{ASME B} 16.10, \text{API} 6\text{D}$
Flange End	$\text{ASME B} 16.5 / \text{ASME B} 16.47$
Butt-Weld End	$\text{ASME B} 16.25$
Safety Testing	Fire Safe ( $\text{API} 607, \text{API} 6\text{A}$ ), Inspection ( $\text{API} 598, \text{API} 6\text{D}$ )

💡 Core Product Advantages

Top-Entry Design (上装式):
- Allows all internal components (ball, stem, and seats) to be accessed and removed from the top of the valve without removing the body from the pipeline. This drastically reduces maintenance time and complexity.
PEEK Seat Superiority:
- PEEK is a high-performance polymer that provides superior temperature resistance (higher than standard $\text{PTFE}$ ) and excellent mechanical strength, making it ideal for high-pressure/high-temperature applications or aggressive chemicals.
Advanced Safety and Functionality:
- $\text{DBB}$ (Double Block and Bleed) Capability: Ensures verifiable zero leakage across the seat.
- Cavity Self-Pressure Relief: Protects the valve from over-pressurization.
- Fire Safe ( $\text{API} 607$ ) and Anti-Static Design: Essential safety features for hydrocarbon and hazardous fluid service.
- Anti-Blowout Stem and Locking Device: Enhances operational safety.
$\text{F}51$ Duplex Stainless Steel: The use of $\text{F}51$ material offers significantly higher strength and better resistance to stress corrosion cracking than standard stainless steel ( $\text{316}$ ), ensuring longer life in harsh environments.

🏭 Applications

This valve is critical for high-integrity isolation in severe services:

Oil & Gas Pipelines and Processing Plants
Chemical and Petrochemical Facilities
Power Generation (Steam/Water Systems)
Any application requiring high-pressure, high-temperature, and easily serviceable isolation.