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Your Professional Brass Check Valve Manufacturer!

Zhejiang Bozheng Copper Co., Ltd. is located in the "the valve capital of China"-Yuhuan (a city by the East China Sea in the Yangtze River Delta economic circle). Founded in 1998, the company is a comprehensive enterprise integrating research and development, design, manufacturing, sales and service. After decades of exploration and development, "Bozheng" has become a high-quality brand in the domestic valve industry.

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Quality Control

We inspect their corrosion resistance and mechanical properties with other equipment. Throughout the production process, we strictly control the processing accuracy and surface quality of our products.

Efficient Production

From initially producing over 1,000 products per day to now exceeding 5,000 products per day, with an average of one product completed every 15 seconds.

Wide Range of Applications

Our products are widely used in construction, plumbing, gas, chemical, petroleum, electric power and many other industries.

Patent Certifications

Rich Experience in Valve Industry; ISO9001 Quality Management System Certification.

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What is Brass Check Valve?

The brass check valve is made of high-quality brass plates by stamping and welding. It has the characteristics of light weight, high strength and good sealing performance. It is suitable for opening and closing on pipelines of water and oil media. This product can replace the ball valve and plug valve in the stop valve and throttling device, and is widely used on pipelines in petrochemical systems to cut off or connect pipeline media.

DN15 Brass Check Valve
Efficient Fluid Flow Control: Our DN15 brass check valve is meticulously designed to regulate fluid flow within plumbing systems with unparalleled efficiency and reliability. Its precise engineering
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PPR Brass Check Valve
Dual Material Construction: Our PPR Brass Check Valve features a body crafted from high-quality PPR material, renowned for its outstanding chemical resistance and thermal stability. This is
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Industrial Check Valve
Backflow Prevention: Our Industrial Check Valve is meticulously engineered to prevent backflow or reverse flow of fluid within industrial piping systems. Its innovative design ensures that fluid can
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Brass Threaded Check Valve
Efficient Backflow Prevention: Our Brass Threaded Check Valve is engineered to prevent backflow and ensure fluid flows in one direction, safeguarding your piping system against contamination and
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Brass Integrated Vertical Check Valve
Enhance your fluid control systems with our premium Brass Integrated Vertical Check Valve, meticulously engineered to offer exceptional performance, durability, and reliability in a variety of
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Benefits of Brass Check Valve

Excellent corrosion resistance

Brass water valves are not easily corroded and can be used for a long time.

High temperature resistance

Brass check valves can withstand higher temperatures and are suitable for some high temperature working environments.

Good sealing performance

Brass check valves have good sealing performance and can prevent medium backflow.

Threaded connection

Brass check valves use threaded connection, which is easy to disassemble and easy to repair.

Easy to operate

Brass check valves are easy to operate and only need to rotate the handle to complete the switch.

Good thermal conductivity

Brass has good thermal conductivity and can still maintain a certain thermal conductivity at high temperatures, which can effectively enhance the heat dissipation performance of the valve.

Working Principle of Brass Check Valve

The principle of brass check valve to prevent medium backflow is to use the valve disc to close the valve under the action of medium pressure. Under the reverse pressure of the medium, the valve disc is pushed open to allow the medium to pass through the valve.

There is a spring mechanism at the bottom of the valve. When the flow direction of the medium is consistent with that of the valve, the spring is in a relaxed state, and the valve disc will open with the flow of the medium, and the medium can pass freely; when the flow direction of the medium is opposite to that of the valve, the spring will be compressed, and the reaction force will tightly close the valve disc, and the valve cannot pass the medium, thereby achieving the effect of preventing medium backflow.

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Structural Composition of Brass Check Valve

The main components of brass check valve include: valve body, valve cover, valve core, spring, gasket, etc.

Valve body

The valve body is the main part of the brass check valve, which is generally forged with high-quality brass material to ensure the strength and rigidity of the valve body.

Valve cover

The valve cover is the other end of the brass check valve and is connected to the valve body. It is usually made of cast iron material and has good corrosion resistance and wear resistance.

Valve core

The valve core is a key component inside the brass check valve. It can move up and down freely to achieve the normal flow of the medium or prevent the medium from flowing back. The valve core is usually made of stainless steel and has excellent corrosion resistance and mechanical strength.

Spring

The spring is an elastic element inside the brass check valve. It is mainly used to provide the rebound force of the valve core and a reliable closing function. The spring material usually uses high-quality stainless steel or high-quality spring steel.

Gasket

The gasket is an important sealing component of the brass check valve, and its sealing performance directly affects the quality and service life of the valve. Commonly used sealing gasket materials include butyrolactone, fluororubber, EPDM rubber, etc.

Application Scenarios of Brass Check Valves

Brass check valves are a type of valve that prevents the backflow of media and have a wide range of application scenarios. The following are common application scenarios of brass check valves:

Tap water pipelines

In tap water pipelines, in order to prevent pollution, some water plants, reservoirs and other institutions require the use of check valves.

Industrial pipelines

In industrial fields such as metallurgy, chemical industry, construction, and electricity, brass check valves are often used to prevent backflow of media and protect equipment.

Firefighting system

Brass check valves play a very important role in urban firefighting systems. In firefighting systems, if the brass check valve fails, it will cause the water flow to reverse, seriously affecting firefighting work.

Air conditioning pipelines

Brass check valves also have important applications in air conditioning pipelines. Since the medium in the air conditioning system is gas, if the medium flows back, it will cause the performance of the equipment to decline. Brass check valves can solve this problem well.

Brass Check Valves vs PVC Check Valves

Brass valves and PVC valves are both commonly used in plumbing and fluid control applications, but they have distinct characteristics, advantages, and disadvantages.

1. Material:

Brass Valves: Brass valves are made from an alloy of copper and zinc, which gives them good durability, strength, and corrosion resistance. Brass valves are suitable for a wide range of applications, including residential, commercial, and industrial settings.

PVC Valves: PVC valves are made from polyvinyl chloride, a synthetic plastic polymer. They are lightweight, corrosion-resistant, and suitable for non-industrial applications, particularly in residential settings.

2. Corrosion Resistance:

Brass Valves: Brass valves offer excellent corrosion resistance, making them suitable for use with a variety of fluids, including water, oil, and gas.

PVC Valves: PVC valves are highly resistant to corrosion and chemical reactions, making them ideal for applications involving corrosive fluids and environments.

3. Strength and Durability:

Brass Valves: Brass valves are generally stronger and more durable than PVC valves. They can withstand higher pressures and temperatures, making them suitable for applications with demanding conditions.

PVC Valves: PVC valves are less robust compared to brass valves. They have lower pressure and temperature ratings, which limits their use in high-pressure or high-temperature applications.

4. Cost:

Brass Valves: Brass valves are typically more expensive than PVC valves due to the cost of the brass alloy and the manufacturing process. However, their longevity and durability can justify the higher upfront cost in certain applications.

PVC Valves: PVC valves are cost-effective and budget-friendly. They are often chosen for less demanding applications where cost is a significant factor.

5. Installation and Maintenance:

Brass Valves: Brass valves may require more maintenance, such as periodic lubrication of the moving parts and potential removal of mineral deposits to maintain optimal performance.

PVC Valves: PVC valves are generally low-maintenance. They do not require lubrication and are less prone to scaling or mineral buildup.

6. Applications:

Brass Valves: Brass valves may require more maintenance, such as periodic lubrication of the moving parts and potential removal of mineral deposits to maintain optimal performance.

PVC Valves: PVC valves are commonly used in residential plumbing, pool systems, irrigation systems, and water treatment applications.

7. Environmental Considerations:

Brass Valves: The production of brass involves mining and refining copper and zinc, which can have environmental impacts. However, brass is recyclable.

PVC Valves: The production of PVC involves certain environmental concerns, such as the release of toxic chlorine gas during manufacturing. Recycling PVC can also be challenging.

Brass Check Valve Installation Position And Direction

The installation position and direction of the brass check valve are crucial to ensure the normal operation of the system. Here are some key points about the installation position and direction of the brass check valve:

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Installation position

Before the water pump: The brass check valve can be installed at the end of the vertical suction pipe in front of the water pump. This installation method is called a foot valve. Its purpose is to fill the water pump at one time without pumping water. Since there is no water in the water pump and the suction pipe in front of the pump, the water pump must be filled with water before pumping water.

Behind the water pump: Another common installation position is behind the water pump. This installation method is suitable for the situation where the liquid level is higher than the water pump, which is convenient for starting and stopping the water pump without closing the water pump outlet valve, especially in the main pipe water pump system, to prevent backflow. ‌

Installation direction

The direction of the check valve should be consistent with the direction of the water flow, ensuring that one end of the check valve is connected to the water pipe and the other end is facing outward, which can effectively prevent the backflow of water. ‌

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Precautions

Before installation, the appearance of the check valve should be checked to see if it meets the relevant national standards, and strength tests and sealing tests should be carried out. ‌

The installation height, water inlet and outlet directions, etc. should comply with relevant specifications, and the flow direction of the internal medium should be consistent with the arrow direction marked on the check valve.

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FAQ

Q: What is the purpose of a brass check valve?

A: A check valve is a backflow preventer, used to keep water from flowing backwards through your plumbing system. As water pressure changes, a check valve allows water to flow in only one direction. Check valves are common in household and industrial applications.

Q: Which is better brass or PVC check valves?

A: In summary, the choice between brass valves and PVC valves depends on the specific requirements of the application, including factors such as pressure, temperature, fluid compatibility, and budget. Brass valves offer greater strength and durability, while PVC valves are cost-effective and corrosion-resistant.

Q: What is the main purpose of a check valve?

A: A check valve, also known as a non-return valve or one-way valve, allows the fluid to flow in only one direction. It is designed to prevent backflow, the reverse flow of fluids in a pipeline, and ensure the unidirectional fluid flow in the piping system.

Q: What is the difference between brass and bronze check valves?

A: Brass is very corrosion-resistant, much like bronze, but is susceptible to breaking down when exposed to high levels of chlorine. The main benefit of brass valves over bronze is the much lower levels of lead present in the metal. This makes brass safe for drinking water in most cases.

Q: Why use brass valves?

A: Strength: Brass is a strong and durable material that can withstand high pressures and extreme temperatures, making it suitable for use in valve applications. Corrosion resistance: Brass is resistant to corrosion, which makes it suitable for use in a variety of environments, including marine and coastal areas.

Q: How long do brass valves last?

A: With high-quality materials, proper usage, and regular maintenance, brass ball valves can last for many years. In residential settings, where brass ball valves are commonly used for water supply lines and plumbing fixtures, they can last 10-20 years or more.

Q: Which is better brass or bronze check valves?

A: Brass is highly corrosion resistant, though high levels of chlorine can break down zinc content. Otherwise, brass is perfect for a variety of media, including natural gas. And, for potable water, brass is a natural choice over bronze, as it typically contains much lower levels of lead than bronze.

Q: How often should a check valve be replaced?

A: A metal disc pivots on a hinge or trunnion to prevent reverse flow. Most larger-scale check valves use this design due to their simplicity. With a life span of five to seven years, these valves are often a component that needs to be replaced frequently.

Q: What are brass check valves used for?

A: A brass check valve is installed in the pipeline to filter impurities of the flow Y shape type. It is used in residential premises and for commercial applications. The brass check valves permit the fluid to stream in a single direction. Yet, it stops the flow of fluid in the backward direction.

Q: Are brass valves better than plastic?

A: Longer Life — Brass valves can be used above and below grade whereas plastic degrades over time in extreme environments and in direct sunlight.

Q: Why would you need a check valve?

Q: What is the difference between a check valve and a backflow preventer?

A: Like a backflow preventer, a check valve stops media from flowing through it in the reverse direction. Check valves, however, do not offer the degree of protection that backflow preventers do and therefore are not suitable for protecting drinking water sources.

Q: Why is it called a check valve?

A: The direction in which the fluid or gas can flow is called the free flow direction; the direction in which fluid is prevented from flowing is called the checked or non-return direction. Check valves are found in everyday household items.

Q: What are the three main types of check valves?

A: Check valves are unidirectional valves that provide unobstructed flow in one direction as long as flow pressure remains constant and protect the piping system against reverse flow. The three main types of check valves we offer are ball, piston, and stop check valves.

Q: What can go wrong with a check valve?

A: Common check valve problems include noise (water hammer), vibration/chattering, reverse flow, sticking, leakage, missing internals, component wear or damage. However, it is worth mentioning that normally the real cause is the wrong size, spring, and/or style for the check valve application.

Q: Does a check valve reduce water pressure?

A: So the check valve opens, the extra fluid moves through the pipe, and the pressure is reduced below the cracking pressure. Once the pressure is below the cracking pressure, then the process of closing occurs, resulting in valve closure.

Q: Where should a check valve be installed?

A: Recommended Submersible Check Valve Installation.
Most high quality submersible pumps will have a check valve built in from the manufacturer at the discharge. This check valve will be the first check valve installed. The second check valve should be placed above the pump and no more than 25 feet above the water pumping level in a well.

Q: What is the alternative to a check valve?

A: Diaphragm valves, also known as membrane valves, are similar to check valves in terms of what they achieve. However, they work in a different way. High purity diaphragm valves are made up of a valve body with two ports, a diaphragm and a seat. The diaphragm rests upon the seat in order to close the valve.

Q: What is the second name of the check valve?

A: A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.

Q: How do I identify a check valve?

A: On the outside of pipes or tubes that contain a check valve, you will find a symbol alerting you to its presence. The symbol will have an arrow to let you know which way the medium contained in the pipe should be flowing. In some cases, the symbol will also let you know what type of check valve is at work there.

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