Top Entry Ball Valves

Short Description:

Forged & Casting top entry ball valves

1- Forged & Casting Carbon steel,stainless steel,duplex,special materials

2- Flange ends,Butt welded

3- 150Lb ~ 2500Lb

4- 2”~40”

Top entry ball valves are a type of ball valve that allows for access to the internals of the valve without removing it from the pipeline.

They are specifically designed for applications that require frequent inspection, cleaning, and maintenance of the valve. They are widely used in various industrial applications such as petrochemicals, power plants, water treatment plants, and oil and gas industries.

Top entry ball valves are available in various sizes ranging from 1/2″ to 48″. The size of the valve is determined by the diameter of the pipeline and the flow rate required. Larger sizes are used for high flow applications while smaller sizes are used for low flow applications.

The standard pressure rating of top entry ball valves is up to 2500 psi. However, they can be designed to withstand higher pressure ratings as per the specific application requirements.Top entry ball valves are designed to handle a variety of fluids and can be used for both on/off and throttling applications. They are commonly used for applications that require high-temperature fluids or corrosive fluids that can damage traditional valve materials.

These valves are constructed from a variety of materials including carbon steel, stainless steel, duplex and super duplex stainless steel, titanium, and Hastelloy.The valve body and ball are the most important parts of a top entry ball valve. The valve body is the outer shell of the valve and is designed to withstand the pressure and stress of the fluid flow. The ball is the internal component of the valve that controls the flow of the fluid. It has a hole drilled through the center and pivots within the valve body. The ball can be manufactured from various materials such as stainless steel, brass, or plastic.

Top entry ball valves are also designed with a variety of seals and seats, depending on the application. Soft seats made from materials like PTFE or TFM are used for applications that require low operating torque, tight shut-off, and low emissions. Metal to metal seats are used for high-temperature applications and abrasive fluids such as slurries.In conclusion, top entry ball valves are a durable solution for applications requiring frequent maintenance and inspection.

They are available in various sizes, pressure ratings, and materials, making them ideal for a wide variety of industrial applications. Their ability to handle a variety of fluids and their durability make them a popular choice for the oil and gas, petrochemical, and power generation industries.

Product Detail

Product Tags

Product Description

Product description

Top-entry ball valve


Q40F top-entry ball valve

Nominal diameter

NPS 2~NPS 40

Operating temperature


Operating pressure

CLASS 150~CLASS 2500


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

Other remarks 1

Parts such as bonnet, ball, valve seat, valve stem, etc. can be dismounted and installed online to realize the online repair function.

Other remarks 2

A locking device is provided to prevent misoperation of valve.

Other remarks 3

Valve stem flyout prevention structure design, to prevent accident due to flyout of valve stem caused by abnormal pressurization in the chamber

Other remarks 4

Fireproof and antistatic design

Other remarks 5

The valve stem and the valve seat are equipped with an injection system.

Other remarks 6

DBB (double block and bleed) function

Integral structure

The body adopts the intergral structure,so as to ensure that is has enough strength and rigidityunder the maximum rated working pressure,the valve trims have been carefully designed and selected to ensure reliability under various service conditions.the sufficient wall thicnkness and the connection bolts,of high strength are very helpful to the maintenance and servicing of valves are able to endure pipeline stress

Top entry structure

The valve adopts the top entry structure,the most distintive difference between this kind of valve and others is that the online maintenance function can be realized without the need of removing the valve from the pipeline,the seat adopts the concession type seat structure,and the rear end of the seat retainer is set as oblique angle to prevent impurities accumulated on the seat from influencing the concession of seat

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