Focus on the production and customization of various plug valves and special valves.
We always adhere to the "quality first, honest service" as the business purpose, strictly implement the "high quality, high standard, high precision" policy service new and old customers.
The company is equipped with a CAD design center and uses 3D body simulation design for improving the speed and quality of new product development.
We have an efficient management team, a skillful technical force and a professional quality-control team.
Over the years, the company constantly updated its equipment. It uses professional automatic manufacturing equipment and testing devices.
Specializing in the production and development of various plug valves such as lifting plug valves, track plug valves, inverted oil-sealed plug valves, ferrule plug valves, eccentric plug valves, etc. Special valves are the company's long-term development goal.
3 way plug valve is applicable to change the media flowing direction or to distribute the media, that are used in various industries such as, petroleum, chemical industry, pharmacy, chemical fertilizer, power. Industry etc. under nominal pressure class 150-900LBS, PN1.0-16.0, Working temperature- 29°C~550°C.
Introduce a double block and bleed valve's structure and working principle.The valve is superior to common gate and ball valves in terms of its sealing performance and service life.The valve has the functions of being fireproof, on-line maintenance, double block and bleed, cavity pressure relief, internal leak detection and others. Illustrate the double block and bleed valve's functions and applications in the oil and gas storage and transportation systems in combination with examples, which has opened new development potential for process design of oil and gas storage and transportation systems and solved many problems encountered in pipeline design. It has not only optimized the pipeline design and improved the product quality but also saved the pipeline operation costs.
Introduce a double block and bleed valve's structure and working principle.The valve is superior to common gate and ball valves in terms of its sealing performance and service life.The valve has the functions of being fireproof, on-line maintenance, double block and bleed, cavity pressure relief, internal leak detection and others. Illustrate the double block and bleed valve's functions and applications in the oil and gas storage and transportation systems in combination with examples, which has opened new development potential for process design of oil and gas storage and transportation systems and solved many problems encountered in pipeline design. It has not only optimized the pipeline design and improved the product quality but also saved the pipeline operation costs.
Elastic seat ring sealed eccentric plug valve is a new structure valve which fills the blank of traditional plunger valve and ball valve in the applications like large- diameter pipeline (above DN200] and muddy water and sludge occasions. Owing to its excellent sealing performance and corrosion-resisting performance, smaller opening/closing torque and water-flow loss and long service life, it is applied as the regulator or closure in the work occasions such as urban sewage, industrial sewage, sludge and clear water.
Inverted pressure balance lubricated plug valve acc. to ANSI is applicable to the cutting and connection of pipelines medium that are used in various industries such as petroleum, chemical industry, pharmacy, chemical fertilizer, electric power industry etc under nominal pressure of CLASS150-2500LBS and working temperature of-29-180°C.
Flange connection lifting plug valve complies with. to ANSI. Suitable for cutting and connecting pipeline media in various industries such as petroleum, chemical, pharmaceutical, fertilizer, and power with nominal pressure CLASS150-1500LBS and working temperature -29~550°C.
Sleeve type soft sealing plug valve acc. to ANSI is applicable to the cutting and connection of pipelines medium that are used in various industries such as petroleum, chemical industry, pharmacy, chemical fertilizer, power industry etc under nominal pressure of CLASS150-900LBS, and working temperature of- 29-180°C
Zhejiang Demelong Fluid Technology Co, Ltd. in the selection of strict and high standards, so that the real benefit to the people, quality first，So as to ensure the reliability and safety of its products.
The Elastic Seat Eccentric Plug Valve is a type of plug valve specifically designed for efficient flow control and tight sealing in various industrial applications. This valve combines an eccentric plug design with an elastic seat, offering distinct advantages in terms of performance, durability, and sealing capabilities. Here’s an overview of its key features, functionality, and common applications:
The development trend of the plug valve industry reflects the changes in global industrial automation, energy structure transformation, and increased environmental protection requirements. The following are some of the main development trends in the plug valve industry:
According to the structural characteristics of the plug valve and the functions that can be achieved in the design, it can be selected according to the following principles.
Plug valves are widely used in oilfield mining, transportation and refining equipment. They are also widely used in petrochemical, chemical, coal gas, natural gas, liquefied petroleum gas, HVAC industry and general industry.