8613675763067
info@dunyunvalve.com
enEnglish
Category
Your Professional Valve Supplier！

 

Zhejiang Dunyun Industrial Co., Ltd. is located at No. 1 Dunyun Road, Modern Environmental Protection Equipment Industrial Park, Zhuji City, the hometown of Xi Shi, in the Yangtze River Delta Economic Circle.We mainly produce various copper valves such as "Dunyun" brand water supply systems, central air conditioning systems, heating systems, gas systems, special ball valves, gate valves, globe valves, temperature control valves, gas valves, exhaust valves, filters, underfloor heating water collectors, as well as new aluminum-plastic composite pipes, and other plumbing accessories.

 

 
First 1234567 Last
 
Natural Gas Ball Valve

 

Why Choose Us

Rich Experience
As we are Actuated Valve Specialists with over 20+ years of experience in valve automation, we have the tools, products, and experience to make sure that your automated valve is durable and has a high life cycle.

 

Quality Control
All inspections are handled by qualified, experienced personnel aligned with the specifications of each project to fully satisfy our customers and surpass their expectations with a high degree of environmental consciousness to the total satisfaction of our customers.

 

Our Certifications
We have passed ISO9001 quality management system certification，as well as various product hygiene licenses.

 

Valve - Overview

 

A valve is a mechanical device that controls the flow of fluids or gases in a pipe or system by opening, closing, or partially obstructing a passageway. Valves can stop, throttle (regulate), direct, or mix fluid flow, and are essential for ensuring safety and efficiency in a wide variety of applications, from simple household plumbing to complex industrial processes.

 

Product Specification

 

We offers the following product specifications：

Item Number :

DY630

1.Standard:

CJ/T 447-2014

2.Working Temperature:

-10°C≤ t ≤ 40°C

3.Max Auto Self-Closing Pressure:

8KPa±2KPa

4.Min Auto Self-Closing Pressure:

0.8KPa±0.2KPa

5.Auto Closing Time:

t≤3s

 

 

Product features

Initiating or ceasing fluid flow
Adjusting flow rates to throttle within the system
Regulating pressure levels
Redirecting flow from one pathway to another
Restricting flow to balance the system or prevent over-pressurization
Preventing the reverse flow of fluid
Halting flow in the event of system failure
Enhancing safety by relieving pressure or vacuum within the piping system.

Auto Natural Gas Shut Off Valve

 

Types of Valve

 

Ball Valve

Predominantly equipped with quick-acting 90-degree turn handles, these valves use a ball to control flow to provide easy on-off control. Generally accepted by operators to be faster and easier to operate than gate valves.

01

Butterfly Valve

Using a compact design, the butterfly valve is a quick-acting rotary motion valve ideal for tight spaces thanks to its wafer type design. Butterfly valve bodies are offered in many different configurations.

02

Check Valve

Used to prevent backflow, these valves are typically self-activated allowing the valve automatically opens when media passes through the valve in the intended direction and close should flow reverse.

03

Gate Valve

As one of the most common valve types, gate valves use linear motion to start and stop the flow. These are typically not used for flow regulation. Instead, they used in the fully open or closed positions.

04

Globe Valve

Globe valves are typically applied in modulating control operations. Typically avaialable in three body types, T-body (as shown above), Y-Pattern, and Angle body.

05

 

 
Material of Valve
 
01/

Stainless steel: Stainless steel is a popular valve material. Its high oxidation and corrosion resistance, durability and superior mechanical properties make it suitable for numerous applications. Stainless steel valves do not rust and are excellent in steam, water, moist air, chloride and food and beverage applications.

02/

Carbon steel: Carbon steel costs less and is easier to manufacture than stainless steel. However, it does not possess the high corrosion-resistance quality of stainless steel. Carbon steel valves are excellent for applications that do not involve moisture. The extra carbon in carbon steel improves its abrasion resistance. Carbon steel valves also have satisfactory heat resistance.

03/

Brass: Brass is often considered as a compromise between stainless steel and carbon steel. It is less expensive than carbon steel and is great for applications involving fuels, air, water and oils. However, its corrosion and heat resistance are lower than that of stainless steel, and more than that of carbon steel.

04/

Monel: Monel is a nickel superalloy that has superb corrosion resistance. It performs excellently in seawater, salt and other saline environments. It is also resistant to certain chemicals. Monel valves are often used in concentrated corrosive environments.

05/

Inconel: Inconel has a very high resistance to oxidation and corrosion. This austenitic nickel chromium-based alloy can also withstand extreme pressures and heat.

06/

Titanium: Titanium is a highly corrosion-resistant material. It is also highly resistant to most chemicals and thrives well in corrosive and reactive environments. Also, titanium valves can withstand extremely high temperatures. These valves are commonly used in nuclear power plants.

 

Application of Valve

 

Manufacturing & Process: Found in chemical plants, refineries, biopharmaceutical manufacturing, and food and beverage production to control and regulate fluids and gases.


Utilities: Vital for water and wastewater processing, controlling water flow and pressure in municipal systems.


Power Generation: Used to manage the flow of water, gas, and steam in power plants, often requiring high-pressure systems.


Oil and Gas: Essential for the transportation and processing of crude oil, gas, and refined products.


Fire Suppression: Used to control the flow of water in fire suppression systems.

 

 

Certifications

 

 

productcate-1-1
productcate-1-1
productcate-1-1
productcate-1-1
productcate-1-1

 

 

Package & Delivery

 

 

Package: Standard export package or Custom


Delivery: By air express, by sea

 

p202507081717564a719.jpg (800×730)

 

 

FAQ

 

 

Q: What is a valve used for?

A: A valve is used to control the flow of a fluid (liquid or gas) in a system by starting, stopping, or regulating it. Valves perform various functions, including isolation, to shut off flow to a specific section for maintenance; regulation or throttling, to control the rate of flow; and direction control, to send the fluid down a particular path.

Q: What is the application of valves?

A: A valve is an application/product that controls the movement of a fluid or gas.It manages the direction and/or controls the flow of a fluid or gas by opening and closing one or more steps. Valves play a vital role in most industries involving pipelines or other applications, including the cryogenic sector.

Q: How are valves classified?

A: Valves can be classified as manual, actuated or automatic based on how they are operated.

Q: What is the ASME standard for valves?

A: ASME valve standards provide safety and design specifications for valves used in various engineering applications, most notably the ASME Boiler and Pressure Vessel Code (BPVC) for high-pressure systems and ASME B16.34 for general industrial valves. Key standards include ASME B16.34 (flanged, threaded, and welding end valves), ASME B16.10 (valve dimensions), and various other ASME B16 standards for flanges, alongside complementary industry standards like API 600 for petroleum gate valves. These standards detail requirements for material suitability, pressure-temperature ratings, dimensions, and testing to ensure durability and safe operation.

Q: Are you manufacturer or trading company?

A: We are manufacturer.

Q: What's your best delivery time?

A: Within 15-30 days.

Q: What is the quality control of your product?

A: Follow strictly quality control measures for implementation,

Q: Will your company provide free sample?

A: It depends on which sort of item you want to get. Some can be provided free of charge, however, the client shall assume the shipping fees himself.

Q: Is OEM open to clients?

A: Yes, we can provide both OEM and ODM service.

Q: What is the payment of sample?

A: T/T and Alipay both acceptable.

Q: What is your packing?

A: Yes, our packaging is genuine original packaging. Of course, we can also provide neutral packaging or according to your requirements

Q: What is your sample policy?

A: If we have stock, we can provide samples, but the customer must pay the sample fee and express fee Question

Q: Have you tested all your goods before shipment?

A: Yes, we will conduct 100% test before delivery, and we will send detailed photos of parts for your approval Question .

Q: How can you maintain a long-term good relationship with our business?

A: We maintain good quality and competitive prices to ensure the interests of our customers.

We're professional valve manufacturers and suppliers in China, specialized in providing high quality custom service. We warmly welcome you to wholesale cheap valve from our factory.

Popular Products
Send Inquiry