Top-Entry Ball Valve

Built for demanding process and pipeline applications, the Top-Entry Ball Valve is designed to provide reliable isolation, tight shut-off, and long-term operating performance under high-pressure and severe service conditions. Its top-entry construction allows access to the internal components from the top of the valve, enabling convenient inspection and maintenance without removing the valve body from the pipeline. Combined with a robust ball and sealing system, the valve delivers dependable performance in critical applications where operational reliability is essential.

The Top-Entry Ball Valve is well suited for applications in oil & gas, natural gas transmission, petrochemical, refinery, chemical processing, and power generation industries. Its maintenance-friendly design, robust pressure-containing structure, and reliable sealing performance make it an ideal choice for pipeline and process systems requiring safe isolation, reduced downtime, and extended service life.

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Technical Specifications

Product description:	Top-Entry Ball Valve
Model:	Q361F Top-Entry Ball Valve
Nominal diameter:	NPS 2”～56”
Operating temperature:	-46℃～121℃
Operating pressure:	CLASS 150～CLASS 2500
Material:	WCB、A105、LCB、LF2、CF8、F304、CF8M、F316, etc.
Design standard:	API 6D、ISO 17292
Structural length:	ASME B16.10
Connecting end:	ASME B16.5、ASME B16.25
Test standard:	API 598、API 6D
Operation method:	Manual, worm, pneumatic and electric
Application fields:	Water, petroleum and natural gas

Features & Benefits

High-performance quarter-turn valve delivering bubble-tight shutoff for demanding process industries.

Top-Entry Construction

Internal components can be accessed from the top, simplifying inspection, maintenance, and repair without removing the valve from the pipeline.

Reliable Tight Shut-Off

Precision-engineered ball and seat sealing systems provide dependable isolation and minimize leakage during operation.

Robust Pressure-Containing Body

Heavy-duty body construction provides excellent mechanical strength and resistance to demanding pressure and temperature conditions.

Trunnion-Mounted Design

The ball is securely supported to reduce operating torque and provide stable performance, particularly in high-pressure and large-size applications.

Low Operating Torque

Optimized ball and seat design reduces friction and operating loads, allowing efficient manual or automated operation.

Double Block & Bleed

Suitable configurations can provide reliable isolation and controlled cavity pressure relief for enhanced operational safety.

Fire Safe Design

Fire-safe sealing arrangements help maintain valve integrity and minimize leakage during emergency fire conditions when designed and tested to applicable standards.

Maintenance-Friendly Design

Top-entry access reduces maintenance time and can minimize pipeline removal and associated downtime.

Long Service Life

High-quality materials, precision-machined components, and durable sealing surfaces provide reliable performance over extended operating cycles.

Wide Range of Applications

Suitable for oil & gas pipelines, natural gas transmission, refineries, petrochemical plants, chemical processing, power generation, and other critical isolation services.

Application Scenario

Chemical Industry

Ball valves, butterfly valves, gate valves, globe valves, check valves, and control valves ensure safe fluid isolation, precise process control, and reliable operation in demanding chemical processing applications.

Oil Industry

Engineered for reliable isolation, flow regulation, and backflow prevention, our valve solutions support upstream, midstream, and downstream oil production and refining operations.

Natural Gas

Providing leak-tight sealing, dependable flow control, and safe pipeline operation for natural gas transmission, storage, LNG, and distribution systems.

Metallurgy

Built to withstand high temperatures, abrasive media, and harsh operating conditions in steelmaking, smelting, and metallurgical processing.

Power Generation

Ensuring reliable isolation, accurate flow control, and long-term performance in steam, boiler, turbine, and power plant systems.

Pharmaceutical

Delivering hygienic, precise, and contamination-free flow control for pharmaceutical manufacturing and clean process applications.

Steel Industry

Designed for high-temperature, high-pressure, and severe-service conditions in iron making, steelmaking, rolling mills, and auxiliary process systems.

New Energy

Supporting hydrogen, LNG, carbon capture, battery materials, and renewable energy projects with advanced valve solutions for safe and efficient process control.