Professional manufacturer of metering pump accessories

Professional manufacturer of metering pump accessories

The company's main products include backpressure valves, safety valves (relief valves), pulse dampers, flow calibration columns, Y-shaped filters, mixers, one-way valves, etc. Realize one-stop procurement of dosing device (metering pump) accessories.

ABOUT US

Shanghai Longmeng Machinery Co., Ltd. is committed to the development of the environmental protection industry, specializing in the research, development, manufacturing and sales of metering pump accessories, and constantly developing new products with domestic advanced technical level.
The company's main products are back pressure valve, safety valve (pressure relief valve), pulse damper, flow calibration column, Y-type filter, agitator, one-way valve and so on. Do one-stop purchase of dosing device (metering pump) accessories. Among them, the back pressure valve, pulse damper and flow calibration column have passed the ISO9001:2008 quality system certification.
Our company has a perfect sales system and after-sales service system. We promise to provide customers with the most professional selection scheme before sales and provide life-long service for all products. After years of innovation and development, the company has become a large-scale, brand, professional metering pump accessories manufacturing enterprises. Products sold throughout the country, and supporting exports, trusted by users.

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PRODUCTS

Specializing in the research, development, manufacturing and sales of metering pump accessories, and constantly develop new products with domestic advanced technology level.

APPLICATION

Products sold throughout the country, and supporting exports, trusted by users.

PRODUCTS

The company has become a large-scale, brand, professional metering pump accessories manufacturing enterprises.

Back pressure valve, PVC back pressure valve, stainless steel back pressure valve

Back pressure valve: used to prevent liquid from flowing or siphoning under the action of gravity. At this time, the back pressure valve can reduce the flow and pressure fluctuations caused by siphoning.

NEWS

Learn about new information about Longmeng Machinery

Introduction to valve connection end structure form

The valve end connection structure and size are very important for the installation and use of the valve. Improper selection may cause mismatch in size or connection structure during the installation process, resulting in failure to install. Therefore, when selecting valves, special attention should be paid to selecting the correct and appropriate connection end structure to ensure smooth installation of the valve.


2024-02-18

Analysis of problems and faults of valve electric actuator

The special motor for the valve provided by the electrical assembly is a fully enclosed squirrel-cage structure, with short-term intermittent working (10min) self-cooling type. According to the requirements of GB 4942.1, the lower protection level is IP44 and the higher protection level is IP68. Depending on the operating conditions and environment of the valve, the required protection levels are also different. A low protection level will cause moisture or dust and other foreign matter to invade the inner cavity of the motor, and the insulation resistance of the motor will decrease, causing damage.


2024-02-18

Professional terminology for getting started with valves, these must be known!

Valves are pipeline accessories used to open and close pipelines, control flow direction, adjust and control the parameters (temperature, pressure and flow) of the conveyed medium. You may wish to read more about the professional terminology of the valve industry!


2024-02-18

Relief valve, pressure reducing valve, sequence valve

Hydraulic valve is a component used to control liquid pressure, flow and direction in hydraulic transmission. Among them, pressure control valves alone include relief valves, pressure reducing valves, sequence valves, unloading valves, etc. This article shares the similarities and differences between the three types of pressure valves to help you quickly distinguish them.


2024-02-18

Users can call for free consultation if they encounter any problems during use.