Diye Valve Company is a professional China gate valve manufacturer with years of experience in the fluid control industry, as well as a reliable one-stop gate valve supplier. Relying on our own modern production factory, we focus on the R&D, production and sales of industrial-grade gate valves. All products are manufactured in strict accordance with authoritative industrial valve standards at home and abroad, mainly for medium and high-pressure industrial applications. Our gate valves feature stable pressure resistance and reliable sealing, serving as core on-off control components in industrial pipeline systems including petroleum, chemical, power, municipal, metallurgical and other fields.
Main Standards for Gate Valves
The industrial gate valves produced by Diye strictly follow authoritative industry standards to meet the requirements of both domestic and export projects, covering four major standard systems:
1. GB/T Series (Chinese National Standards): The core standard for domestic industrial projects, mainly complying with GB/T 12234 and GB/T 13927, standardizing the whole process of design, production and testing, suitable for various industrial pipelines and municipal engineering in China.
2. ASME/ANSI System (American Standards): Special standard for overseas export projects, complying with ASME B16.34 and ASME B16.10, suitable for overseas industrial markets such as North America and the Middle East.
3. EN/DIN System (European Standards): General standard for the European market, meeting the supporting requirements of EU industrial equipment, applicable for projects in Europe.
4. JIS System (Japanese Industrial Standards): Custom-produced for specific overseas markets, meeting the standard requirements of Japanese industrial supporting projects.
5. GOST Standard (Russian Standard):Products comply with standards applicable to Russia, Kazakhstan, Belarus and other countries.
Nominal Pressure PN Series (Common for GB, EN & Domestic Industry)
PN refers to the nominal pressure at normal temperature, the main pressure marking method for domestic industrial gate valves. Common pressure ratings include:PN10, PN16, PN25, PN40, PN63, PN100, PN160.
1. PN10 and PN16 are low-pressure gate valves, suitable for conventional low-pressure applications such as municipal water supply & drainage, HVAC and general circulating water systems.
2. PN25 and PN40 are medium-pressure ratings, applicable for medium-pressure pipelines conveying oil, clean water, compressed air, etc.
3. PN63 and above are high-pressure and ultra-high-pressure industrial gate valves, specially used for severe high-pressure conditions such as steam, high-temperature media, high-pressure oil and gas, and chemical raw materials.
All industrial gate valves undergo shell strength and sealing pressure tests in accordance with standards to eliminate leakage and deformation during industrial operation.
Class Series (American Standards, for Export)
Export industrial gate valves adopt the ANSI Class pressure system, complying with overseas industrial project specifications. Common ratings:Class 150, Class 300, Class 600, Class 900, Class 1500.
1. Class 150 (approx. equivalent to PN16) is suitable for general overseas industrial applications.
2. Class 300 and Class 600 are medium and high-pressure ratings, widely used in overseas petroleum, chemical and power industries.
3. High Class ratings such as Class 900 and Class 1500 are designed for ultra-high-pressure and high-temperature extreme conditions, including offshore platforms, refineries and high-pressure steam pipelines.
The Class system is used with pressure-temperature ratings and is more suitable for complex working conditions with pressure and temperature fluctuations.
Core Functions & Working Principle of Gate Valves
Diye valve is a professional exporter specializing in gate valves. Gate valves feature a classic rising wedge structure and are force-sealed valves. The core working principle is to realize pipeline on-off through vertical lifting of the gate, with a purely mechanical structure and extremely low failure rate without complex electric control.
When opening the valve, rotating the stem lifts the gate fully out of the flow path, allowing smooth medium passage with minimal flow resistance.
When closing, rotating the stem lowers the gate until the sealing surfaces tightly contact, achieving forced sealing and completely blocking medium flow to prevent backflow and leakage.Both rising stem and non-rising stem structures follow this principle, adapting to different installation and operation scenarios.
As a professional China gate valve manufacturer and one-stop supplier, Diye Valve understands that quality and material directly determine durability, corrosion resistance and application range. We provide gate valves in various materials for different media, temperatures and pressure conditions, covering general, high-temperature, slight corrosion and medium corrosion applications, ensuring long-term stable operation and extended service life.
