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Ningbo RMI Plastic Co.,Ltd


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  • PP Butterfly Valve Wafer Type DIN PN10
    PP Butterfly Valve Wafer Type DIN PN10
  • PPH Diaphragm Valve JIS 10K
    PPH Diaphragm Valve JIS 10K
  • PPH Ball Valve Flange End Lever Handle
    PPH Ball Valve Flange End Lever Handle
  • PVC True Union Ball Valve Socket End
    PVC True Union Ball Valve Socket End
  • PVDF Ball Check Valve ANSI
    PVDF Ball Check Valve ANSI
  • PVC Bottom Valve Flange End ANSI CL150
    PVC Bottom Valve Flange End ANSI CL150
  • PVDF Swing Check Valve Flanged PN10
    PVDF Swing Check Valve Flanged PN10
  • Plastic Diaphragm Valve Pneumatic Actuatored
    Plastic Diaphragm Valve Pneumatic Actuatored
  • PVC Vanstone flange PN16
    PVC Vanstone flange PN16
  • Plastic Shell Motorized Actuator Rotary Switch Type
    Plastic Shell Motorized Actuator Rotary Switch Type


we are a professional manufacturer and exporter of plastic valves and piping materials, provide consult service and supply high quality piping materials for industrial application, water treatment system, irrigation systems, etc. RMI products cover full range of plastic valves, pipes, fittings and accessories by different materials of PVDF, PVC, PVC-C, PP, PP-H, PP-GF, FRP, EPDM, VITON, PTFE. Over 30 kinds different valves include Diaphragm Valve, Ball Valve, Check Valve, Butterfly Valve, Foot Valve, Globe Valve, etc. Size from 1/2" up to 32", following standard of DIN, JIS, ANSI, CNS, ISO. 8 different materials of pipes and fittings diameter from 16mm to 600mm. With high quality products and professional technical support, we serve more than 200 customers in different industries and areas all around the world, and win good reputation. Especially in steel industrial, chloride alkali industry, metallurgical industry, paper making industry, pharmaceutical factory, electroplating factory, mining plant, fish farm, etc. We are continual working for the target of quality improving, technical innovation and service satisfied. Aim to provide customer durable and efficient products to ensure the piping system working safer and longer.
  • 24
    24 H Online Service No Time Difference.
  • 2006
    It is a Chinese brand established in 2006.
  • 5
    Our Factory Have More Than 5 Employees.
  • 5000
    More Than 5000 Square Meters Technical R&D Building.
  • Diaphragm valve is a stop valve which uses diaphragm as the opening and closing part to close the flow channel, cut off the fluid and separate the inner cavity of valve body and valve cover. The diaphragm is usually made of rubber, plastic and other elastic, corrosion-resistant and impermeable materials. The valve body is made of plastic, glass fiber reinforced plastic, ceramic or metal rubber lining material. It has the advantages of simple structure, good sealing and anti-corrosion performance and low fluid resistance. It is used for medium with low pressure, low temperature, strong corrosivity and suspended substance. It can be divided into roof ridge type, cut-off type, gate type and so on. According to the driving mode, there are manual, pneumatic and electric. brief introduction The structure of diaphragm valve is very different from that of general valve. It is a new type of valve and a special type of block valve. Its opening and closing part is a diaphragm made of soft material, which separates the inner cavity of the valve body from the inner cavity of the valve cover and the driving parts. It is widely used in various fields. The commonly used diaphragm valves are rubber lined diaphragm valve, fluorine lined diaphragm valve, unlined diaphragm valve and plastic diaphragm valve. Diaphragm valve is a flexible diaphragm or combined diaphragm installed in the valve body and valve cover, and its closing part is a compression device connected with the diaphragm. The valve seat can be weir shaped or the wall of straight flow passage. The advantage of the diaphragm valve is that its operating mechanism is separated from the medium path, which not only ensures the purity of the working medium, but also prevents the possibility of the medium impacting th
    2020-09 15
  • Performance index of butterfly valve service life: The butterfly valve can still be closed "airtight" after being used for more than 10000 times. Pressure drop: If the pressure drop is too large, it will increase the energy consumption. However, it should be noted that the valve is not the only factor causing pressure drop in the pipeline system, and the following factors also cause pressure drop. The fluid section of the pipe. Friction on the inner wall of the pipe. A change in flow direction as it passes through a component. The flow characteristics of butterfly valves are three times or more than that of globe valves and 75% of those of gate valves of the same size Versatility: Butterfly valve controls and regulates the piping system by opening / closing and throttling / balancing. Butterfly valves are more versatile than gate or globe valves. Because butterfly valve can adopt various surface treatment technology and choose elastic material pipeline, so butterfly valve has strong chemical anti-corrosion performance. Weight: Light duty butterfly valves cost less than cast iron valves: for example, a 10 inch butterfly valve weighs 55 pounds, while a 10 inch cast iron gate valve weighs 490 pounds. For the whole pipeline system, the installation cost saved by using butterfly valve is very considerable. In addition, the heavier the piping system, the stronger the pipe support base is, which makes the whole piping system more expensive. Therefore, considering the weight of the valve, the cost of the entire piping system can be saved Size: The space occupied by butterfly valve is about 1 / 6 of the same size gate valve. And every cubic foot of building space is wasted. For example, a butterfly valve with a nominal diameter of 10 inches is about 21 inches high, while a gate valve with a n
    2020-09 14
  • The soft seal butterfly valve is suitable for regulating flow and intercepting medium on water supply and drainage and gas pipelines of food, medicine, chemical industry, petroleum, electric power, Taijin, urban construction, light textile, papermaking, etc. with temperature ≤ 120 ℃ and nominal pressure ≤ 16MPa. Its main characteristics are as follows: 1. The design is novel and reasonable, with unique structure, light weight and quick opening and closing. 2. Small operating torque, convenient operation, labor saving and dexterous. 3. It can be installed in any position and maintained conveniently. 4. The sealing element can be replaced, the sealing performance is reliable, and the two-way sealing is zero leakage. 5. The sealing material has the characteristics of aging resistance, corrosion resistance and long service life. Standards adopted:
    2020-08 11
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