FAQ

Our fully welded ball valves adopt an integral welded structure, featuring no external leakage, compact design, high pressure resistance, and corrosion resistance. They are suitable for important occasions such as long-distance pipelines and urban gas, with long service life and low maintenance costs.

Hard-sealed ball valves use metal-to-metal sealing, suitable for high temperature, high pressure, and wear-resistant working conditions; soft-sealed ball valves use elastic material sealing, with better sealing performance, suitable for normal temperature, low pressure, and occasions with high sealing requirements.

Triple offset butterfly valves have zero leakage sealing performance, small opening and closing torque, long service life, suitable for high temperature, high pressure, large diameter pipelines, especially suitable for key control occasions in power plants, petrochemical, metallurgy and other industries.

Our coal slurry cutoff valves adopt special wear-resistant materials, featuring anti-clogging, erosion resistance, and reliable sealing. They are specially designed for cutoff control of solid-containing media such as coal slurry and mineral slurry, suitable for coal chemical industry.

Quick-opening blind flanges are used for quick opening and closing of pipeline systems, facilitating equipment maintenance and repair. They feature easy operation, safety and reliability, and good sealing performance, widely used in petroleum, chemical, natural gas and other industries.

Slag lock/lock hopper valves are specially designed for harsh working conditions with high pressure, high temperature, and solid particles. They are mainly used in gasifier slag discharge systems, featuring wear resistance, erosion resistance, quick opening and closing, and reliable sealing.

Black water/gray water angle valves adopt angle structure design, with smooth flow channel and not easy to clog. The valve core uses wear-resistant alloy materials, suitable for handling black water and gray water media containing solid particles, widely used in coal chemical plants.

High-frequency ball valves use spherical valve cores with good flow regulation performance; high-frequency angle valves adopt angle structure with faster response speed. Both have high-frequency opening and closing capabilities, suitable for occasions with high automatic control requirements.

Pneumatic disk valves drive the actuator through compressed air, driving the valve disk to rotate to realize opening/closing or regulation functions. They feature simple structure, reliable operation, and easy maintenance, suitable for flow control of various industrial pipelines.

C-type ball valves adopt special C-type channel design, featuring high flow regulation accuracy, cavitation resistance, and good sealing performance. They are suitable for occasions requiring precise flow control, especially suitable for viscous media and media containing a small amount of solid particles.

The pressure class range of our fully welded ball valves is PN10-PN40, ANSI Class 150-Class 300. Customized products with higher pressure classes can be provided according to customer needs to meet different working condition requirements.

The temperature application range of hard-sealed ball valves is -40℃ to 450℃, and special materials can reach above 600℃, suitable for high temperature working conditions. The specific temperature range can be adjusted according to the selected material and seal pair combination.

The size range of our triple offset butterfly valves is DN50-DN2000. Various connection methods such as flange connection and wafer connection can be provided to meet the installation needs of different pipeline systems.

The sealing surface materials of gate valves mainly include stainless steel (304, 316, 316L), hard alloy, copper alloy, etc. Suitable sealing surface materials can be selected according to working conditions such as medium characteristics, temperature, and pressure.

Globe valves have good flow regulation characteristics, usually linear flow characteristics or equal percentage flow characteristics. They are suitable for occasions requiring precise flow regulation, with high regulation accuracy and stable control performance.

The opening pressure of check valves is usually 0.02-0.05MPa, which can be adjusted according to customer needs to ensure reliable opening under normal working pressure, prevent medium backflow, and protect the safety of pipeline systems.

The actuators of pneumatic disk valves mainly include two types: diaphragm type and piston type. Diaphragm actuators have simple structure and low cost; piston actuators have large output torque and fast response speed, which can be selected according to working condition requirements.

The cutoff time of slide cutoff valves is usually 0.5-2 seconds, and special design can reach within 0.3 seconds. They have fast cutoff capability, suitable for occasions requiring emergency cutoff, such as gas, steam and other dangerous medium pipelines.

The control methods of hydraulic angle valves include manual control, electric control, pneumatic control and automatic control. They can be equipped with PLC control systems to realize remote control and automatic operation, meeting different control needs.

The service life of high-frequency ball valves in terms of opening and closing times can reach more than 1 million times. Special sealing structure and wear-resistant materials are adopted to ensure good sealing performance and operation reliability under high-frequency operation.

Fully welded ball valves are widely used in petroleum and natural gas, urban gas, long-distance pipelines, chemical industry, electric power and other industries, especially suitable for occasions with high sealing requirements and harsh environments.

Soft-sealed ball valves are suitable for use in clean media such as water, oil, natural gas, liquefied gas, steam, etc. They have excellent sealing performance and low leakage rate, especially suitable for pipeline systems with strict sealing requirements.

Triple offset butterfly valves are mainly used in boiler feed water, condensed water, circulating water, flue gas desulfurization and other systems in power plants for flow regulation and cutoff control, featuring high temperature resistance, high pressure resistance, and reliable sealing.

Coal slurry cutoff valves are used for cutoff and control of coal slurry transportation pipelines in coal chemical plants, preventing coal slurry clogging and leakage, ensuring safe and stable operation of coal slurry transportation systems, and are one of the key equipment in coal chemical plants.

Quick-opening blind flanges can realize quick opening and closing in natural gas pipelines, facilitating pipeline maintenance and repair, reducing downtime, improving work efficiency, and at the same time having good sealing performance to ensure the safety of natural gas transportation.

Slag lock/lock hopper valves are used to control the discharge of furnace slag in gasifier systems, realize slag transportation under high pressure, prevent gas leakage in the gasifier, and ensure the normal operation and safety of the gasifier system.

Black water/gray water angle valves are mainly used in sewage treatment, industrial wastewater treatment, reclaimed water reuse and other systems in water treatment, for transportation and control of impurity-containing water bodies, featuring anti-clogging and wear resistance.

High-frequency ball valves are widely used in automatic control systems in petrochemical, food and pharmaceutical, water treatment, energy and other industries, for fast-response flow control and on-off control, improving the automation level and control accuracy of the system.

Plug valves are suitable for low pressure, low temperature, and high medium viscosity pipeline systems, such as oil transportation, chemical raw material transportation, food processing and other industries, featuring simple structure, quick opening and closing, and easy maintenance.

Pneumatic disk valves are mainly used in flue gas desulfurization, denitrification, dust removal, wastewater treatment and other systems in environmental protection equipment, for controlling the transportation and regulation of fluids, featuring reliable operation and strong corrosion resistance.

When installing fully welded ball valves, attention should be paid to pipeline cleaning, correct installation direction, reliable welding quality, welding under full open state of the valve, avoiding forced installation. After installation, pressure test should be carried out to ensure good sealing performance.

The maintenance cycle of hard-sealed ball valves is usually 6-12 months, which is determined according to factors such as working conditions, medium characteristics, operation frequency, etc. Regularly check the sealing performance and operation flexibility, and replace worn parts in time to ensure normal operation of the valve.

Daily maintenance of triple offset butterfly valves includes regular lubrication of bearings and sealing surfaces, checking sealing performance, cleaning impurities in the valve body, checking the working status of the actuator, keeping the valve clean, and handling problems in time to extend the service life.

When installing check valves, attention must be paid to the medium flow direction. There is usually an arrow on the valve indicating the flow direction. It should be ensured that the medium flow direction is consistent with the arrow direction to avoid reverse installation leading to valve failure and affecting the normal operation of the pipeline system.

Maintenance of pneumatic actuators includes regularly checking whether the air pressure is normal, cleaning the filter, lubricating moving parts, checking whether the seals are leaking, testing the operation flexibility, ensuring the actuator works reliably and responds in time.

To prevent clogging of coal slurry cutoff valves, it is necessary to regularly clean the coal slurry residue in the valve body, select a suitable valve structure (such as large-diameter channel), control the coal slurry concentration and particle size, and conduct regular inspection and maintenance to ensure smooth flow channel.

When valve leakage occurs, the leakage position and cause should first be determined. For external leakage, check whether the seal is damaged and the connection is loose; for internal leakage, check whether the sealing surface is worn and the valve core is damaged, and repair or replace parts according to the situation.

Maintenance of the electrical part of high-frequency ball valves includes regularly checking whether the wiring is firm, the control circuit is normal, the sensor is sensitive, and the grounding is reliable, keeping the electrical components dry and clean, and avoiding the impact of moisture and dust.

Our company's valve products have obtained ISO9001 quality management system certification, API certification, CE certification, GB/T standard certification, etc. Some products have also obtained special industry certifications to ensure product quality meets domestic and international standard requirements.

The quality guarantee period of our company's valve products is 12 months from the date of delivery. If quality problems occur within the warranty period, we will provide free repair or replacement services to ensure customer rights and interests.

Before leaving the factory, the products will undergo multiple tests such as pressure test, sealing performance test, operation performance test, appearance inspection, dimension inspection, etc., to ensure each product meets quality standards and has reliable performance.

Yes, we provide Material Test Certificates (MTC) for each batch of products, proving that the chemical composition and mechanical properties of the materials used in the products meet relevant standard requirements and ensuring reliable material quality.

We ensure product consistency and stability through strict raw material procurement control, standardized production processes, advanced production equipment, complete quality control systems and strict factory inspection to meet customer needs.

Yes, our company's products meet national environmental protection requirements, using environmentally friendly materials and processes. The products will not cause environmental pollution during use. Some products also have energy-saving effects, in line with the concept of green development.

You can contact our sales team by phone, email, website message, etc., providing product model, specification, quantity, delivery time and other requirements. We will provide you with detailed quotations and technical solutions, and sign a contract after confirmation.

Yes, we have a professional technical team and production capacity, and can provide customized valve product solutions according to customers' special needs (such as special materials, pressure classes, connection methods, control methods, etc.).

The delivery time for conventional products is 15-30 days, and the delivery time for customized products or large-diameter, special material products is 30-60 days. The specific delivery time will be clearly stipulated in the contract according to product specifications and quantities.

We provide comprehensive after-sales services such as product installation guidance, commissioning services, operation training, regular return visits, maintenance, etc., and have established a complete after-sales service system to ensure customers have no worries about use.

Yes, we have a professional technical team that can provide customers with comprehensive technical support such as product selection suggestions, technical scheme design, on-site technical guidance, problem solutions, etc., to meet customers' technical needs.

We provide flexible payment methods, including telegraphic transfer, bank acceptance draft, letter of credit, etc. Domestic customers usually adopt the method of advance payment + balance payment, and foreign customers can adopt letter of credit or T/T method, which can be determined through negotiation.