Your Trusted Brass Float Valve Manufacturer

D&R Metal Industry is a well-known brass float valve manufacturer in China. We offer a complete range of brass valves varying in designs and sizes to fit your requirements.

  • 100% Proven and Tested Quality
  • Customizable brass float valve according to your specifications
  • Well-equipped with complete advanced manufacturing lines
  • 24/7 Fast response to your inquiries

Brass Float Valve

A brass float valve or sometimes referred to as a ballcock is commonly used as a mechanical liquid level controller. It maintains the cold water level in the header tank to regulate hot water pressure.

Most small brass float valves are used for domestic water systems. It consists of high pressure and low pressure to suit different conditions and applications.

These valves have a feature to close or open themselves when the level of the liquid changes. It has a float that can operate the valve mechanically.


D&R highly offers all types of brass float valves with 1/2 inch sizes. These can be used in varying domestic water systems and accessible for an affordable price.

Brass Bottom Entry Ball Float Valve

As a high praised manufacturer of brass float valves, D&R knows the right valves for your applications. Just send us your detailed specifications.

Brass Float Valve for Automatic Water Filler

The brass float valve for automatic water filler has 100% proven quality. It is one of a kind simple mechanical liquid level monitor. Perfect to choose for water system applications.

Brass Float Valve with Plastic Ball

D&R brass float valve with a plastic ball is manufactured from pure and solid brass materials. Its float effectively notices changes of elevation in the liquid-free surface.

Brass Float Valve with Rod

This type, brass float valve with efficient rod have lots of features making best-selling product in the market. Its features are anti-corrosion, leak-proof, etc to ensure long-term purposes.

Brass Male Outlet Float Valve

D&R Brass male outlet float valves are suitable for domestic water systems applications. It is also made to suit 22 mm and 15mm copper pipes.

High Pressure Brass Float Valve

A high-pressure brass float valve made by D&R is designed to cover various local conditions. This is capable of operating up to 16 barg.

Noiseless Brass Float Valve

D&R developed a noiseless float valve which cast in brass materials. We manufacture this variety according to your detailed specifications.

Sterling Brass Float Valve

We manufacture sterling brass float valve that offers great performances to every application. It is available with customizable wall thickness and sizes to fit your needs.

Tank Brass Float Valve

We used high-quality brass materials in order to create long-lasting tank brass float valves. It features high ductility, corrosion resistance, and many more.

Threaded Brass Float Valve

We will manufacture your threaded brass float valve orders in accordance with your requirements. Thus, we can supply a range of excellent brass valve solution for you!

Water Lever Brass Float Valve

Our wide range of water lever brass float valves is made from high-grade brass materials. It is available with custom size variations so you can freely choose for your needs.

Features of Brass Float Valve

We will customize the brass float valve according to customer requirements, discuss sketche with the customer to ensure the function and other details.
Before each batch of brass float valves is shipped, we would arrange for a quality inspector with rich experience to inspect the weight and thread of the valves.
water control
Water Control
The most important function of a brass float valve is water control, and we can promise you that our float valves will open and close automatically.
Online Service
We have an excellent sales team online to solve customer any inquiries about brass float valves. We will reply to our customers as soon as we see the message.

D&R Brass Float Valve

D&R creates cost-effective, highest-quality brass float valves for your satisfaction. If you find difficulties looking for a reliable manufacturer of brass float valves, choose D&R Metal Industry! We are totally capable to supply the right solution for your needs.

Here at D&R, you will discover all kinds of outstanding brass float valves. You can even request to customize your orders according to your preferences. We have professional staff, always supply innovative valves products using our automated manufacturing tools.

Brass Valve & Fitting Manufacturer

How We Manufacture Your Brass Float Valve

cut material
We will choose the right brass material based on your order
test material
Material Testing
We will make strict testing on your Brass Float Valve material, after the material is ok, then we will arrange the material cutting
brass forging
Forging process can ensure the right shape based on your order requirement
sand blasting
Sand Blasting
Sand Blasting will make your Brass Float Valve surface clean and smoothly.
CNC Machining
CNC machining is the most important process to ensure all detais are based on your order requirement.
brass plating
Brass Plating
we can make different plating according to your requirement, including the thickness,t he color, the plating material, the test standard
Brass Float Valve Assembly
We will assemble your Brass Float Valve from different parts, you will see the final valves after this process.
water pressure testing
Water Pressure Testing
We make 100% air pressure testing on each of your Brass Float Valve before packaging and shipping.

D&R Metal Industry – China’s Premier Brass Float Manufacturer

Brass Float Valve Assembly
Thread of Brass Float Valve

As a well-experienced manufacturer, D&R Metal Industry is dedicated to serving customers with excellent quality brass float valves. D&R brass float valves are broadly applied for commercial and industrial plumbing uses. You can rely on us since we have more than 15 years of experience in manufacturing durable and highest quality brass float valves. We are willing to help you pick up the right product for your projects or business. Contact now!

As one of China`s leading manufacturers, D&R Metal Industry gladly presents brass float valves in all types that are fit for your applications. Whether for completing your projects or booming your business, you can count on D&R for a superior quality brass float valve.

All types of brass float valves available at D&R are made sturdy and tough to fit your desired applications. We use only 100% quality brass materials to create satisfying brass float valves. These can last a longer period of use and is durable, an ideal solution to skyrocket your business!

D&R brass float valve is defined as a simple mechanical liquid level monitor. Its float can quickly notice the changes of elevation in the liquid-free aspects, so it closes or opens a valve appropriately. This is accessible in different designs and sizes to fit domestic water system applications. It is also applicable to stop the overflow and overfilling of tanks every time the liquid is required to be diverted into the drain.

Here in D&R, we supply brass float valves that offered leak resistance and better holding features for low-high pressure applications. It also owned better corrosion resistance to guarantee durability for long-term use purposes.

However, since our brass float valves are very simple to install, they are commonly added in various industries such as welding, oil, gas, water, and so on. D&R brass float valves are suitable for a wide range of applications.

Most of our brass float valves are strictly tested to check their mechanical properties before being shipped to your place. When producing brass float valves, we make sure they go along with all international standards and firm guidelines for ensuring quality

D&R is the reliable brass float valve manufacturer you can give your trust. We are well-equipped with advanced forging techniques and comprehensive manufacturing machines. Therefore, we can provide you a superior performance, longevity, and quality products. All our products are offered with better pricing.

Request a quote for your next brass float valve orders!

Parts of a Brass Float Valve

Identifying the basic parts of brass float valves are important because, through this, you can distinguish how this valve works and functions.

Some of the basic parts of a brass float valve include:

  • Body
  • Cover
  • Seat
  • Ball float
  • Piston
  • Float rod
  • Stem
  • Bonnet
  • Pole
  • Nut
Forging Brass Float Valve

When purchasing a brass float valve, you may consider the following:

  • The size of the valve. Choose a brass float valve according to your application requirements. You may contact the manufacturer for size charts.
  • Maximum temperature range. Make sure that your application temperature range is within your float valve temperature range.
  • Maximum pressure operation.
  • Connections
  • Media
  • Angle or globe pattern
  • The discharge pressure of the valve

Hot Selling Brass Float Valve

FVB901 Brass Float Valve

Body material: brass

Nominal pressure: 1.6Mpa

Medium: water, non-corrosive liquid, saturated steam (≤0.6MPa)

Working temperature: -10℃≤t≤120℃

Cylindrical pipe thread comply with ISO230, NPT, BSP

Surface: natural color

FVB902 Brass Float Valve

Body material: brass

Nominal pressure: 1.6Mpa

Medium: water, non-corrosive liquid, saturated steam (≤0.6MPa)

Working temperature: -10℃≤t≤120℃

Cylindrical pipe thread comply with ISO230, NPT, BSP

Surface: natural color

FVB903 Brass Float Valve

Body material: brass

Nominal pressure: 1.6Mpa

Medium: water, non-corrosive liquid, saturated steam (≤0.6MPa)

Working temperature: -10℃≤t≤120℃

Cylindrical pipe thread comply with ISO230, NPT, BSP

Surface: natural color

FVB904 Brass Float Valve

Body material: brass

Nominal pressure: 1.6Mpa

Medium: water, non-corrosive liquid, saturated steam (≤0.6MPa)

Working temperature: -10℃≤t≤120℃

Cylindrical pipe thread comply with ISO230, NPT, BSP

Surface: natural color

Rocket Your Business with D&R Brass Float Valve

What are the Functions of a Brass Float Valve?

Brass float valves have several functions including the following:

  •  It can control the water flow through the falling and rising of the ball.
  • It is suitable for cisterns and water tanks to prevent overflow and maintain the proper water level.
  •  It has an optimal feature designed to use for high pressure, medium pressure, and low-pressure applications.
  • It mainly functions as a throttling device for most huge industrial refrigeration plants.
Functions of a Brass Float Valve
Functions of a Brass Float Valve
How Does a Brass Float Valve Work?

A brass float valve can be used together with other types of valves. It automatically closes or opens when it detected changes in a liquid level.

For a high-pressure brass float valve, it can work up to 16 barg with its small seat area.

A brass float valve can operate in high pressure or low pressure to suit various conditions and applications.

It is mostly mounted in a tank side above the liquid level. Thus, it doesn’t drain the tank while allowing maintenance. The liquid level can be adjusted by bending the ball arm.

What are the Types of Brass Float Valves?

There are two types of brass float valves such as

Direct Float Control Valve

In this type of brass float valve, when the tank’s liquid level rises, the float valve also rises. The main valve can be closed or opened through the movement of the float valve arm unit.

Direct Float Control Valve
Direct Float Control Valve

Pilot Operated Float Control Valve

If the tank’s liquid level increases, the float will also rise to close the pilot valve. The float will come down along with the liquid level.

Thus, allowing the liquid to pass through the pilot line. By that, the main valve will be opened to fill the tank with the liquid.

What Materials Used for Brass Float Valve?

A brass float valve is made from special-machined and heavy-duty brass parts to withstand different application conditions.

There are different grades of brass materials used for producing brass float valves such as C260, C330, and C360.

It has commonly a yellow color and is widely used for plumbing applications.

What are the Standard Sizes for a Brass Float Valve?

Generally, brass float valves have a standard size ranging from DN15 to DN30 varying on your applications.

What is the Normal Working Pressure of a Brass Float Valve?

PN20 is considered a normal working pressure of a brass float valve.

However, make sure that the maximum operating pressure of your system is within the maximum operating pressure range of the valve.

Otherwise, the float valve will not open or close.

Brass or Stainless Steel: Which is Better Material for Your Float Valve?

When purchasing a float valve, you may consider choosing between brass or stainless steel materials. This comparison will provide significant differences that you must consider before choosing.

Stainless Steel Float Valve
Stainless Steel Float Valve
  • Corrosion-resistance. Both stainless steel and brass materials are able to withstand corrosion. But stainless steel is mostly used especially in marine environments.
  • Price. Brass float valves are cheaper than stainless steel. If both brass and stainless steel float valves meet your project’s need but budget is a concern, you may consider choosing brass to save money.
  • Welding. If you use stainless steel float valve, you still need to break down its oxide layer before welding. However, brass is much better for welding because of its chemical buildup.
  • Stainless steel is approved by FDA to be used in different industries. Brass, however, can only be approved by FDA if it is certified lead-free. Thus, making it a poor choice for some industries.
Brass Float Valve
Brass Float Valve

Make sure to conduct thorough research on the materials that you will choose for your float valve in your next project.

How To Install a Brass Float Valve?

Before you install your brass float valve, you need the right tools to complete the task. You need:

  • Adjustable spanner
  • Copper pipe
  •  Float valve
  • Pipe cutting tool
  •  External and internal pipe deburring tool

If you have all the needed tools, you can now start installing your brass float valve.

A brass float valve must be installed horizontally and not in a vertical discharge position.

When installing, you should first remove the tank’s bulkhead fitting.

After that, you also remove the drain plug. You can now install the valve assembly.

For the float valves installed in a water tank, they should be positioned near the water surface where waves are least distributed along with their float.

However, proper installation of a brass float valve must be done by a professional or experienced person.

What are the Factors You Need to Consider for a Proper Brass Float Valve Installation?
  • Make sure that the weight of your valve is supported to prevent pipeline stress
  • Isolation valves used along with your brass float valve should be fitted for maintenance
  • Use an anti-frost device if your valve is installed or located in a frost-prone area.
  • Install a by-pass for a critical supply line
  • Make sure that your valve avoids excess pressure to prevent vibration phenomena and cavitation.

Proper Maintenance of a Brass Float Valve

For the proper maintenance of the brass float valve, you should first install an isolation valve.

Thus, you can do maintenance without draining the pipe system.

How Do You Adjust a Brass Float Valve?

When adjusting a brass float valve, it is necessary to find out whether you take away or add water from the float until it operates effectively.

The weight of both floats must be properly adjusted so that the switch will operate. In order for it to float, both floats should be light enough.

You should also adjust the height of the brass float valve to provide a better range between low and high-water levels. Thus, you can make good use of the tank’s water volume.

Generally, a brass float valve doesn’t have adjustable features. However, you can bend the arm downwards if the water level is too high. Thus, you can regulate the water flow.

Do You Need a Low or High-Pressure Brass Float Valve?
Low Pressure Brass Float Valve
Low-Pressure Brass Float Valve

For you to know whether you need a high-pressure or low-pressure brass float valve, you should first know the difference between these two.

A low-pressure float valve is typically mounted in a chamber parallel to a vapor or liquid separator. You can also connect the float to an electronic switch instead of a mechanical connection.

Meanwhile, a high-pressure float valve is commonly positioned at a high-pressure side of the system. It also has an open connection to the condenser.

High Pressure Brass Float Valve
High-Pressure Brass Float Valve

Generally, you need to consider what types of applications you have before you choose between high or low-pressure brass float valves.

You can also talk to a professional so you can know which brass float valve is suitable for your application.

Why Do Brass Float Valve Sometimes Fail?

A brass float valve sometimes fails in its function due to failing float switches. The water can leak in one of the floats increasing its weight. Thus, it will no longer float and may cause tank overflows.

When a brass float valve fails, problems may not be easy to solve. However, you can unplug or switch off your water pump when the tank is overflowing.

The best way, call a professional to seek help in fixing the problem.

What are the Advantages and Disadvantages of a Brass Float Valve?

A brass float valve is created with advantages for some applications. It includes:

  • It doesn’t require control or a monitor. It has an automatic regulation for level control operation.
  • It has an economical design since it doesn’t require electrical power.
  • It is advantageous for remote areas to control tank level where there is no electrical supply available.

However, you may also consider the disadvantages of using a brass float valve.

  • At some points, brass float valves cannot handle pressure, especially in a high-pressure pipeline.
  • Floats are prone to damage, you need to replace them often.
How Much Would It Cost to Replace a Brass Float Valve?

It is a good thing that a brass float valve has an inexpensive part. You can also do it in a DIY installation.

These valves are very easy to replace. Installation costs will incur if you hire a professional plumber.

What are the Standard Requirements that a Brass Float Valve Should Meet and Comply with?

A brass float valve must be compliant with different standards depending on its usage. It should meet the standards required for sanitation, quality, safety, and more concerns.

Several regulatory organizations that provide such standards include:

  • International Organization for Standardization or ISO. ISO develops standards to make sure that the products are safe to use. ISO certifications also guarantee the safety and efficiency of the products.
  • American Petroleum Institute or API. If a brass float valve has an API certification, this means that the product has passed or meet the quality test set by American Petroleum Institute.
  • American Society for Testing Materials or ASTM International
  • American Society of Mechanical Engineers or ASME
  • American National Standard Institute or ANSI. This is a US standard is a guideline for brass float valve with lead.
  • Public Health and Safety Organization or NSF. NSF standards and certifications assure that a brass float valve is lead-free.
  • FDA (Please note that FDA only approved if the valve is certified lead-free)
  • EN1212, EN228-1
What are the Typical End Connections of a Brass Float Valve?

A brass float valve comes with different end connections such as BSPT, NPT, and Treaded Connections.

BSPT (British Standard Pipe Taper)

BSPT connections have a 55-degree angle across the flank of the thread.  BSPT pipe sizes also have a different pitch from NPT.

Thus, a BSPT can fit in an NPT connection or vice versa. However, it cannot be sealed.

Also, you will need a threaded sealant to seal female and male fittings.

BSPT Connection
BSPT Connection

NPT (National Pipe Thread)

NPT has two main adapters. The male adapter and female adapter. NPT male adapters have a taper thread that can fit in a female NPT adapter.

Both adapters can be sealed because of their “out of roundness principle”.

NPT Connection
NPT Connection

Threaded Connections

Threaded connections offer streamlined and compact connections.

It either has male or female threaded connections. Threaded connections must comply with industry standards.

Threaded connections also have standards for straight threads and tapered.

Does a Brass Float Valve Safe for Potable Drinking Water?

There is a brass float valve that is lead-free and suitable for drinking water applications.

When you need a brass float valve for drinking water applications, you must choose those lead-free products.

How Do You Know if Your Brass Float Valve is a Certified Lead-Free?

There a several third-party certification bodies that provide certifications for lead-free compliant products.

The certifier mark is usually engraved on the product itself.

You can also find the certifier’s mark on the products’ front or back packaging.

However, contacting the manufacturer of your brass float valve is the best way to confirm if the product is lead-free.

What are the Features of a Brass Float Valve?

Most brass float valves have features that set them apart from other valves. Here are some common features of a brass float valve to help you choose the right product for your next project.

  •  Heavy-duty design for higher pressure applications
  • Blow-out proof stem structure
  • 100% leakage tested
  • Longer service life
  • Excellent corrosion resistance
  • NPT, BSP, and thread inlet and outlet
  • Adjustable angle rod connection
  • Different sizes, working temperature, and working pressure
  • Super strong and dependable
  • Highly versatile
  • Long Parallel Thread Options that makes it suitable for thin-walled or concrete tanks
  • Compact and high performance
  • Quiet operation and easy to install
  • Inexpensive parts and accessories
Where Can You Use a Brass Float Valve?

A brass float valve can be direct-acting. It is commonly used for toilet tanks. Most direct-acting float valve designs mostly used in an industrial incarnation are used as pilot valves. Thus, it can help in directing large control valve operations. These are also used for

  • Swimming pools, condensate tanks, reservoirs, and storage tanks
  • Basins, car washes, high-pressure washes, cooling towers
  • Water, oil, and other non-corrosive liquid
  • Water level control in a close or open tank
  • Applicable in a typical household over-head tank
  • Conventional lavatory cisterns
  • Pump systems
  • Potable drinking water systems
  • Live-stock waterer
  • Plumbing
  • Industrial applications
Can a Brass Float Valve Be Used as A Throttling Device in Refrigeration Systems?

Yes. Most brass float valves are used as a throttling device in a huge refrigeration plant. It helps in fulfilling the entire process’ cooling requirements.

There are two types of brass float valves that are commonly used as a throttling devices.

Low Side Brass Float Valve

Low Side Float Valve
Low Side Float Valve

The low-side flow type of the throttling valve is normally applicable for the flooded types of refrigeration plants.

The brass float valve will maintain the liquid at a constant level. The low-side float valve is located in the low-pressure evaporator. The function and the construction of a low-side float valve are somewhat similar to the float valve used for water tanks.

A low-side float valve is consists of a seat, needle valve, and a float arm. The needle forms and the valve seat creates an opening that delivers a throttling effect to the refrigerant.

The float or the hollow ball floats on the refrigerant inside the evaporator. It moves down and up according to the level of the liquid. It is connected to the valve seat and needle through a float arm.

High Side Brass Float Valve

While the low side float valve is located at an evaporator, the high side brass float valve is positioned at a high-pressure side between the evaporator and condenser.

The refrigerant would condense and evaporates if the load increases. Thus, making the liquid level in the float chamber increase.

High Side Float Valve in Refrigeration System
High Side Float Valve in Refrigeration System
How Much Pressure Can a Brass Float Valve Hold?

The high-pressure brass float valve is capable of working up to 16 barg. The lowest water supply pressure it can hold is at least 2 barg.

How a Brass Float Valve Controls the Water Level?

The water level in a tank can be determined through the arm between the valve and the float.

The arm is adjustable to the level change. For a low water level, you can move the float downwards. You can also raise the float to increase the water level.

You can use these three common methods to adjust the arm and the water level.

  • A usual method used for adjusting is just physically bending the solid brass arm between the valve and the float. Grip the arm near the valve using your hand and the other hand to bend it downward or upwards until you achieve the required water level.
  • You can also adjust it by using adjustment screws with a lock nut. By releasing the lock nut, you can adjust the screw to change the water level.
  • Another brass float valve has a hinge in the middle of the arm. You can adjust it by loosening the lock nut then lower or raise the float using the hinge.
Brass Float Valve Construction

The Afloat valve has brass flat rods and trims.

The design consideration of the brass float valve includes high flow rates at a low head loss. If the valve seat is properly designed, it can minimize the noise in the operation, reduce shut-off loads, ensures float, and minimize frictional resistance.

A brass float valve is designed for standard and pilot operation. It has a short or long lever, large and small orifices, and small floats.

In order for your brass float valve to have a longer service life, it must not be overrated in terms of pressure or flow. 

How Much Does the Brass Float Valve Cost?

The price of a brass float valve varies on its design, size, and specification.

What is the Difference Between Brass Float Valve and Bronze Float Valve?
Bronze Float Valve
Bronze Float Valve

Bronze float valves are a mixture of tin and copper making them more resistant to cracking. A bronze float valve is sometimes cheaper than a brass float valve. Aside from that, bronze float valves also have high ductility levels and corrosion resistance. However, bronze float valves also have disadvantages like their high porosity that can lead to degradation, rough surface, and lead content.

Brass float valves on the other hand, also have higher corrosion resistance. It has very low to no levels of content and is highly durable. However, brass float valves tend to have higher price points than bronze.

Now that you know the difference between a brass float valve and a bronze float valve, you can now decide which one you will use for your application.

What are the Benefits of Brass Float Valves?


Brass float valves can provide a longer service life when properly installed and maintained.


Brass float valves have a high corrosion resistance for harsh environments means they are not subject to rust.

Easy Installation

Brass float valves don’t require any complicated installation process. It is also easy to maintain as well.


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