Carbon Steel Flange Ball Valve ASME B16.34 ANSI 150 300 Supplier - SIO
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  • Carbon Steel Ball Valve ANSI 150
  • Carbon Steel Ball Valve ANSI 300
  • Carbon Steel Ball Valve ANSI 150
  • Carbon Steel Ball Valve ANSI 300

Carbon Steel Flange Ball Valve ASME B16.34 ANSI 150 300


  • Full Port for unobstructed flow
  • Quick quarter-turn rotation
  • Blow-out proof stem




Body: Carbon Steel A216 WCB

Seats: PTFE

End Connections:

ANSI 150#

ANSI 300#


Flanged Ball Valves Selection Guide

SIO offers two-piece flanged ball valves that are specially built for zero-leakage sealing when control conditions require valve actuation exceeding 50,000 cycles. Our flanged ball valves have flanges with bolt holes that are used to lock them to matching flanges on the pipe. Gaskets are placed where the flanges connect to provide reliable sealing and prevent potential leaks. Flanges are an excellent means of connecting pipes, pumps, valves, and other components to produce a piping system. Having flanged connections make installation, removal, and cleaning easy.

sio flanged ball valve

The main parts of a flange end ball valve include the cover, body, stem, ball, and seat. The cover is equipped with flanges mainly to install the valves into the pipelines. A ball valve flange can be manually operated by moving the lever in specific angles for open and closed positions. This ball valve type can also function through pneumatic or electric actuators. Flanged ball valve dimensions for the installation of actuators will vary, but are usually according to certain standards, like the ISO 5211.

As one of the top flanged ball valves manufacturers, we offer various customization options for our flanged end ball valves. Our two-piece flanged ball valves come in two models – ANSI Class 150 and DIN PN16-40. The maximum working pressure for our Class 150 model is 285 PSI, while for the DIN PN16-40 is 740 PSI.

The valve body is usually made from carbon steel or stainless steel, both are highly corrosion-resistant and temperature-tolerant materials that are great for crucial service conditions. The ball seats can be made from PTFE or RPTFE materials, which have high chemical resistance. They are available in sizes ranging from NPS ½” to NPS 12”.

Flanged Ball Valves Design Features and Options

Full Port for Unobstructed Flow

SIO flange end ball valve has full bore to ensure there are no obstructions in the flow. It is ideal in applications where low flow resistance and pressure drop are important. Having a full bore means the valves share a similar internal diameter with the pipes, which reduces pressure drop and cavitation. A full bore flanged ball valve is also widely used in media with mixed solids and liquids. This is to prevent build-ups that could affect the flow rate of the pipes.

Independent Stem Rotation

The rotational movement of the stem is independent with the adjustable Belleville washers and plate (the live loading system). The mechanism of stem rotation does not affect the sealing tightness of the disc plate. It also promotes quick quarter-turn rotation, which makes the flange end ball valve efficient and easy to operate.

High-performance Ball Seats

SIO offers two types of materials for the ball seats. PTFE, more commonly known as Teflon, is a type of plastic material highly resistant to chemicals. Its chemical compatibility is suitable for all types of media, including hazardous gases and toxic components, which makes it the most common material used for tight sealing.

RPTFE is a 15% glass-reinforced PTFE for enhanced strength and resistance to cold flow, abrasion wear, and permeation in molded seats. Reinforcement allows the flange end ball valves to operate in applications with high pressure and temperature.

Blow-out Proof Stem

A blow-out proof stem contributes to the integrity of our flanged end ball valves. It means the stem is separated from the valve body to keep it from blowing out. In severe applications, the valve body will receive excessive pressure, which might cause the stem to dislocate. With a blow-out proof design, the stem is secured in place by the stem housing, which is attached to the valve body.

Antistatic Device

An antistatic device helps reduce accidental fire by providing a ground path to keep electrical conductivity between the valve body, ball, and stem. This ensures that the friction caused by valve operation does not cause static build-up. With the antistatic device, SIO ball valves will not produce sparks that could lead to fires and other accidents.

Fire-safe Design

An API 607 fire-safe system is a great addition to our flange end ball valve. The fire-safe design limits the acceptable leakage of ball valves when exposed to fire conditions. In case of an accidental fire, the metal seat retainers will connect with the ball to shut fluid flow, controlling internal leakage. Even when o-rings are damaged by the fire, our flanged ball valves will have a secondary graphite seal to prevent external leakage.

Live Loading Stem Sealing (Adjustable Plate and Belleville Washer)

Belleville washers are excellent for compression spring applications that need high loads in limited spaces. Their cylindrical structure allows them to hold high loads with small deflections compared to helical springs. They are widely used to address thermal expansion, vibration, and bolt creep issues.

The adjustable plate uniformly compresses the pair of Belleville washers to store energy for live loading, which extends the time required between maintenance. The live loading system works independently during high-cycle operations to maintain a reliable tight sealing.

Top Mounting Pad

We offer an ISO standard mounting pad so our flanged type ball valves can easily be actuated in several forms. The machined flat surface ensures proper alignment of the actuator to the stem top for minimum side loading during operation. Cast gasket and adaptor are also available for high-temperature applications to protect the actuators.

Flanged Ball Valve Mounting Pad

How Does a Flanged Ball Valve Work

A flanged ball valve is used to shut media flow in both directions. This SIO ball valve type is designed to be compact, simple, and generally the economical solution for flow control operations. It is an excellent alternative to lined-up plug valves and diaphragm valves.

A flanged ball valve operates similar to a typical ball valve. It is a type of quarter-turn valve used to release or obstruct media flow in pipelines. It has a spherical disc, more commonly known as a ball that has a hollow center which rotates to open or close media passage.

The difference is that the flange ball has a control spindle that controls the ball to open and closed positions. When the ball is pushed by system pressure against the side of the non-pressurized seal, the valve shuts the flow with no risks of leaking.

internal structure of a flanged ball valve

Applications for Flanged Ball Valves

Oil & Gas Industries

Our flanged ball valves are built to withstand demanding service conditions in the oil & gas industries. The ball seats ensure bi-directional and bubble-tight sealing while providing the lowest possible torque. Our TFM seat has an anti-expansion design for high-temperature applications.


SIO’s 2 flanged ball valve can endure chemicals and dangerous substances involved in petrochemical industries. It is equipped with a seat made from PTFE, which is the most chemical-resistant among plastic materials. It has excellent electrical and thermal insulation and useful in a wide temperature range between -40°C to 204°C.

Process Plants

The aggressive environments of processing plants require valves that are durable, reliable, and have a long service life. An SIO flanged ball valve is made from high-quality parts that promote tight sealing and low operational torque, which contributes to the ball valve’s long lifespan. Flanged ball valves also promote easy installation and removal, which are necessary for process plants.

Food and Beverage Industries

The food and beverage industries require that there is absolute zero leakage during operations. They also require valves that are durable and have excellent resistant abilities to pressure. SIO flanged type ball valves are made from durable materials that are corrosion-resistant and reliable parts that guarantee a bubble-tight shut-off.

What is Carbon Steel Flange Ball Valve ASME B16.34 ANSI 150 300

Carbon steel flange ball valves are used in the control of flow when working with different substances. These ball valves are manufactured using carbon steel material for enhanced durability and efficiency. Flange ball valves are preferred given that they do not restrict flow and are corrosion resistant.

Home > Carbon Steel Flange Ball Valve ASME B16
Worker inspecting a ball valve

Your Best-in-class Flanged
Ball Valve Manufacturers


SIO is your perfect partner and one of the highly sought-after carbon steel ball valve manufacturers working to always provide quality. We pride ourselves on offering incredible quality that you can always rely on. Our manufacturing systems are designed to feature the use of quality steel material for incredible durability and efficiency in performance. You can trust that working with SIO will leave you with incredibly sturdy and reliable flanged ball valves for your business.

Customize Flanged Ball Valves
Based On Your Specifications


The shape of your flanged ball valve determines how its efficiency when using on different pipes. You need to ensure that you invest in the right shape when it comes to ball valves to give you the best experience.


When it comes to ensuring the quality and durability of your flanged ball valves, working with the right materials is essential. As your trusted flanged ball valves manufacturers, we’ll work closely with you to advise and ensure that you invest in the best fit for you.


The dimensions of ball valves vary depending on the pipes that will be featured in their application. With this in mind, you need to ensure that you invest in the right dimensions to facilitate its efficiency.

Connection Ways

Different methods are available when it comes to connecting your ball valves to your pipes. You can customize these options to ensure they fit your desired applications. At SIO, you can trust that we’ll ensure you invest in the best option.

Actuator Ways

Actuator ways are used to describe the different options available when it comes to initiating the use of these ball valves. You have the option of customizing to your liking and choosing between the different options available.

Ball Movement Ways

Ball movements come in handy to ensure that you can control the direction of flow when working with liquid or gas. You can customize the ball movement ways to ensure that you get your desired results.

Industry Standards

Different industries come with varied standards that need to be met to ensure that the ball valves can be used. We work with you to customize your ball valves to ensure that they meet your exact industry standards.

SIO is Ready to Be Your Carbon Steel Ball Valve Partner Whoever You Are


Being a distributor, working with a reliable flanged ball valve manufacturer is essential. At SIO, we come in to ensure that we offer discounted prices with quality ball valve options that will ensure that you meet your customers’ desires.


Getting your products intact and on time can be a hectic aspect especially as an importer. SIO relieves this stress by ensuring that you get the best quality delivered to you on time and in perfect condition.

Engineering Company

As an engineering company, some of your systems require the use of ball valves to ensure they are running smoothly. We offer the best quality options to ensure they are perfect and in line with your industry standards.

Equipment Manufacturer

Ball valves come in handy when it comes to the manufacture of different equipment and machines. As a manufacturer, we come in to offer the best options to help cater to your needs and ensure that your machines work efficiently.


We work closely with all our customers to ensure that you get the best ball valve options for your particular needs. You can trust that at SIO, your needs will be met and you’ll be working with the best quality in the market.

Why SIO Flanged Ball Valves

Certified Quality

We are among the most reliable flanged ball valve manufacturers to consider working with for all your ball valve needs. We pride ourselves on certified qualities on all the ball valves we produce to give you the best experience.

Free Sample Offered

When it comes to catering t bulk orders and custom options, we have the option of getting a free sample to give you a feel of our products. This option allows you to invest in quality ball valves and not miss out.

Custom Carbon Steel Flange Ball Valve Solution

We offer custom options to all our customers who have specific features and additions they would like added to their ball valves. Doing this allows us to cater to your specific needs and give you options that meet your needs.

Fast Turnaround

At SIO, we work to ensure that all our manufacturing and logistics systems are well established. This allows us to always guarantee a fast turnaround on all the ball valves we work on.

Flexible Payment Method

We offer different flexible payment methods to help ensure that all our customers get in on the quality ball valves we offer. You can trust that we have you covered and will offer incredible options for your business.

Full Carbon Steel Flange Ball Valve Support

We pride ourselves on building lasting relations with our customers to ensure that they are always getting the best from us. This has continued to be an advantage given that we always offer support to cater to any concerns that may arise.

Contact Our Experts

Send us a message if you have any questions or request a quote.

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