Your Reliable Brass NRV Valve Manufacturer

D&R is a leading manufacturer and factory of brass NRV valves in China. We are developing and supplying valves for more than 15 years and continue to make innovative high precision valves. We also provide custom solutions to OEM customers.

  • One-stop solution for your brass NRV valve need
  • Low MOQ brass NRV valve at 500 pieces
  • Free design of your layout/ drawing
  • 100% testing and inspection of your order
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Why D&R is Trusted in Brass NRV Valve Manufacturing

Being one of the trusted brass NRV valve manufacturers in China, D&R Metal Industry has been providing metal products to more than 20 countries. For over two decades in the field, we gain rich expertise in how to support client needs and requirements. Send us your design/ layout now and feel stress-free purchase at D&R.

D&R Metal IndustryYour Leading Brass NRV Valve Manufacturer

1” Brass NRV Valve

If you are looking for 1’’ brass NRV valve, D&R manufacture and supply this product in different countries around the world.

12 inch Brass Non return valve Vertical Check Valve

Our 1/2 inch brass nonreturn valve vertical check valve is constructed by our professional engineers with the highest skills.

2 12 inch Brass Swing NRV for Pumps

This 2 1/2 inch brass swing NRV for pumps is developed using high end materials that ensure the products capability.

Manual Brass Non Return Valve for Water

D&R produces a manual brass non-return valve for water with wide applications. We are providing this valve for a competitive price.

50mm Brass NRV Valve

Using our advanced CNC machines, D&R 50mm brass NRV valve is guaranteed high performance and has high hardness.

Brass NRV Valve Horizontal Check Valve

If you need a top-quality brass NRV valve horizontal check valve, we hold a wide range of this valve in standard and custom designs.

D&R Brass NRV Valve

D&R manufacture brass NRV valve to satisfy your own unique project requirements. Our capability to support your product development will help you grow your business. We can custom any type of brass NRV valve for you.

All brass NRV valves are tested and inspected before leaving the factory. Detailed reports like material testing, images, videos, packing are provided.

Brass Valve & Fitting Manufacturer

What is Brass NRV Valve

The full name of the Brass NRV Valve is Brass Non-Return Valve. As the name suggests, the Brass NRV Valve serves to stop the backflow of liquid or gas in the piping system. In everyday use, the Brass NRV Valve needs to be checked regularly for damage to the valve to prevent it from leaking and causing damage due to objective factors.

Brass Stopcock Valve
Brass One-way Valve

Function of Brass NRV Valve

A brass NRV(non return) valve is the simplest type of directional control valve used in hydraulic systems. Brass NRV valves stop the flow of fluid in one direction and allow free flow in the opposite direction. They are also known as brass check valves. If you are interested in our brass NRV valve, you can contact us to get the latest information.

100& Quality Guarantee

Brass NRV valves, like normal brass check valves, are available as vertical brass NRV valves and horizontal brass NRV valves. Our valves are forged from fine brass and the threads are CNC machined to guarantee compliance with standard specifications. In case of quality problems, you can contact us upon receipt of the goods.

Brass One-way Valve

How We Manufacture Your Brass NRV Valve

cut material
We will choose the right brass material for brass nrv valve based on your detailed order.
test material
Material Testing
We will make strict testing on your brass nrv valve material, after the material is ok, then we will arrange the material cutting
brass forging
Forging process can ensure the right shape of brass nrv valve based on your order requirement
sand blasting
Sand Blasting
Sand Blasting will make your brass nrv valve surface clean and smoothly.
CNC Machining
CNC machining is the most important process to ensure all details are based on your exact requirement.
brass plating
Brass Plating
We can make different plating according to your requirement, including the thickness, the color, the plating material, the test standard
Brass Valves Assembly
We will assemble your brass nrv 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 nrv valve before packaging and shipping.

Rocket Your Business with D&R Brass NRV Valve

brass valve and fittings design

D&R Metal Industry – Your Ultimate Brass NRV Valve Manufacturer in China

Are you looking for a high-quality brass NRV valve for your upcoming project or start-up business? D&R  is your best place to be.

With over 20 years of experience & in-depth knowledge in this field, we are engaged in offering a quality-assured array of brass NRV valve products.

The D&R brass NRV valve is made of high-grade brass material. It comes in different pressure ratings, operating pressure, threads, and operating temperature.

In air, water, gas, or oil, the brass NRV valve works effectively. This is ideal for any type of industry, can be used in a wide variety of applications including hydraulic, pneumatic, plumbing installation, and so on.

Brass NRV Valves

D&R brass NRV valves are available in a range of sizes and specifications. There are valves generally very small, simple, and inexpensive.

The valve got numerous quality approval including RoHS, EAC, CE, UL, and more. That important part of quality will help you to get guaranteed-quality products from us.

Moreover, we do also make custom-made brass NRV valve according to customers’ drawings and requirements. Included in the customization are logo, shape, size, color, part model, packaging, and more. We can emboss your brand on the surface of the part.

We will provide a free sample of your design, for you to check and approve. All the technical specifications vary accordingly. You can contact our support team for in-depth technical details.

D&R is a professional manufacturer known for offering the best quality brass non-return valve in China. Under the skilled supervision of our team, we can offer valves that fulfill your special requirements. We offer the best solution for the challenging demand of the application. This maintenance-free product can withstand wide operating temperatures.

Brass NRV Valve

As one of the leading suppliers in China, we always aim to provide excellent products and services to all our customers. We do quality tests and inspections of brass NRV valves before, during, and after production. 100% guarantee reliable valve.

Need a custom solution?

Just send us your drawing or sample details, our professional sales support will choose the best manufacturing solution for your brass NRV valve requirements.

Brass NRV Valve: The Ultimate FAQ Guide

Learning the basics about a brass NRV valve can help you decide to choose the right product.

In this guide, you will learn what is a brass NRV valve, how does it functions, its features, applications, material construction, and more.

Keep reading to learn more!


What is a Brass NRV Valve?

NRV stands for Non-Return Valve. An NRV valve is also known as a check valve or one-way valve.

The suitable media for the NRV valve are water, oil, gas, and air.

NRV valve allows the media to flow in one direction.

It also allows the media to flow in an accurate direction to prevent a reverse flow.

Brass NRV Valve
Brass NRV Valve

How is a Brass NRV Valve Constructed?

A brass NRV valve is designed with two ports. It has two openings in its body.

One opening serves as the media’s inlet and the other opening functions as the outlet.

Brass NRV valves are inexpensive. It typically has a compact and simple structure.

In addition, a brass NRV valve is an automatic valve. It doesn’t require an external factor or a person to control it.

Thus, a brass NRV valve is designed without a stem or a handle.

Brass NRV Valve Construction
Brass NRV Valve Construction

Why Brass is the Most Used Material for Making NRV Valves?

Brass materials are very popular for making different types of valves. These materials have good corrosion resistance.

It also has a malleable characteristic, good machinability, and excellent chemical resistance.

Aside from that, brass materials are available in a non-leaded option. Thus, it is widely used for manufacturing a wide range of NRV valves.

What are the Main Parts of an NRV Valve?

The main parts of an NRV valve are listed below.

Valve Body

A valve body is also referred to as a shell. It is the framework of an NRV valve.

It is consists of bolted, threaded, or welded outlet and inlet.

A valve body also holds the main pressure boundary of an NRV valve.


A seat of an NRV valve holds the disc. It can be welded or threaded to the valve’s body.

NRV valve’s seat comes with different wall thicknesses to withstand pressure.


The function of the NRV valve disc is to allow or block a flow.

Sometimes, a disc is forged or hard-surfaced to ensure a wear-resistant characteristic.

Parts of a Brass NRV Valve
Parts of a Brass NRV Valve

Does a Brass NRV the Same as Check Valves (CV)?

Technically, NRVs and check valves are two different fittings. These two valves have different purposes.

Check valves are widely used for preventing backflow. On the other hand, brass NRVs are used to prevent a reverse flow.

How Can You Identify a Brass NRV Valve?

A brass NRV valve or non-return valve usually has a yellow or gold color. Usually, an NRV valve has a cross sign located at the spindle.

What are the Common Types of Brass NRV Valves?

These are the common varieties of an NRV valve:

Ball NRV

A ball NRV features a spherical ball that serves as a closing member. It is used to block the flow.

The ball NRV’s main seat is conically tapered. This will guide the ball to create a positive seal. Thus, stopping a reverse flow.

Ball Non-Return Valve
Ball NRV Valve

Diaphragm NRV

It can create a normally closed valve by using a flexible rubber diaphragm.

To allow a flow, the diaphragm NRV should be open. In that case, you need to make sure that the downstream pressure is lesser than the upstream pressure.

In-line NRV

An in-line NRV features a spring inside. The spring will lift up due to the pressure on the upstream side.

Cracking pressure is needed to avoid spring tension. An in-line NRV can avoid backflow if the upstream pressure is lower than the cracking pressure.

In-Line NRV Valve
In-Line NRV Valve

What are the Advantages of Using a Brass NRV Valve?

These are advantages of using a brass NRV valve:

  • A brass NRV valve is available in different sizes.
  • Brass NRV valves are generally inexpensive.
  • Brass NRV valves have a compact and simple construction.
  • It prevents reverse flow and backflow.
  • By using NRV valves, you can protect your compressor and pumps.
  • Brass NRV valves are energy-saving.
  • It can prevent water hammering that can cause equipment damage.
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