冠龙阀门

About us

The product is excellent and trustworthy for users

High tech specialized enterprise for valves

冠龙阀门
Established in 1998
Product coverage across the country

ISO9001 Quality Management System Certification

冠龙阀门
Comprehensive system certification
Has reached a high level of design, development, and manufacturing

More than ten categories and hundreds of models of valve products

冠龙阀门
Committed to the development of new products
Introduce equipment and establish a technology development center

Satisfying users is our pursuit

冠龙阀门
Enterprises follow everything in order to serve users and provide pre-sales, in sales, and after-sales services to users

Quality creates value

Zhejiang Guanlong Mechanical Valve Co., Ltd. is located in Oubei, near Oujiang River, connected with Wenzhou City by a bridge, and close to the tourist attractions Yandang Mountains and Nanxi River. With outstanding talents and picturesque scenery. Our company is a medium-sized specialized manufacturing enterprise that integrates design and development, production, sales, installation, and service for water supply and drainage valves. Our main products include: check valves, hydraulic control valves, water pump control valves, flow and pressure regulating valves, filters, exhaust valves, etc. The company also undertakes the design and manufacturing of various non-standard valves externally, and can also produce according to the drawings or samples provided by users. Our products cover all parts of the country and are exported to the Middle East and Southeast Asia. Widely used in industries such as chemical engineering, oil extraction, papermaking, construction, fire protection, electricity, water conservancy, and water supply and drainage. The product has unique craftsmanship, a beautiful reputation, and is highly trusted by users.

Product display

Our main products include: check valves, gate valves, ball valves, butterfly valves, globe valves, filters, and other national, American, Japanese, and German standard valves. The company also undertakes the design and manufacturing of various non-standard valves externally, and can also customize according to samples

Enterprise strength

产品优势

Company Profile

Continuously applying advanced technology to product research and development, ensuring that the entire set of technologies is leading and services are stable and safe

产品优势

Honorary qualifications

The company has obtained a national industrial product production license, a certificate for the use of safety signs for mining products, and a CCC certificate for electrical wires

产品优势

technical service

Implement a 24-hour after-sales service delivery system, and arrive at the user's site within 24 hours after receiving a notification that the user needs to provide after-sales service

产品优势

production equipment

Having a variety of production equipment, it has reached a high level of design, development, and manufacturing

News

Design and selection of low noise control valve

Design and selection of low noise control valve

The noise of most control valves occurs in the case of compressible fluid, because part of the energy is converted into sound during throttling... Generally, the measurement estimate is that if the product of Cv value and inlet pressure exceeds 1000, the control valve will generate a lot of noise under the critical pressure drop.  
Cause and Prevention of Flash and Cavitation of Control Valve

Cause and Prevention of Flash and Cavitation of Control Valve

Flashing refers to the phenomenon that when the static pressure from the constriction section to the valve outlet decreases to be equal to or lower than the saturated vapor pressure of the fluid at the valve inlet temperature after the incompressible fluid is throttled through the control valve, part of the liquid vaporizes to form gas-liquid two-phase flow behind the valve.
It is important to understand the principle of pneumatic pressure regulating valve and select the correct type

It is important to understand the principle of pneumatic pressure regulating valve and select the correct type

Principle of pneumatic pressure regulating valve: The pneumatic pressure regulating valve is a kind of pressure balanced regulating valve, which adopts cage sleeve guide and double seal structure, and is equipped with a multi spring pneumatic membrane actuator.
Design and selection of low noise control valve
The noise of most control valves occurs in the case of compressible fluid, because part of the energy is converted into sound during throttling... Generally, the measurement estimate is that if the product of Cv value and inlet pressure exceeds 1000, the control valve will generate a lot of noise under the critical pressure drop.  
Details 白箭头 黑箭头

Zhejiang Guanlong Mechanical Valve Co., Ltd

Service hotline:

Address:

Guanlong Industrial Park, Oubei Sanqiao Industrial Zone, Wenzhou

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