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Ningbo RMI Plastic Co., Ltd.


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Hot Products
Product Center
  • 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


Ningbo RMI Plastic Co., Ltd. is 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.
  • PVC butterfly valve have many different types . According to the structure, it can be divided into central line type and eccentric type. According to the connection mode, it has flange type, wafer type and lug type. According to the operation, there are manual, worm drive, electric and pneumatic operation. Our PVC butterfly valve is wafer, central line type. Generally, size from dn50 to dn200 are hand lever type, and dn200 to dn500 is worm gear drive. Dn50-dn200 is newly developed style. The connection fit DIN PN10, ANSI cl150 and JIS 10K flange standards. The valve body and disc are made of PVC, the valve seat and sealing ring are made of high-quality EPDM rubber, and the valve stem is made of 304 stainless steel as general equipped. The installation platform of butterfly valve meet the standard ISO5211, which can directly install the electric and pneumatic actuators directly without bracket. Our new PVC butterfly valve is industrial class used for industrial field. It is very different from the general PVC butterfly valve for water supply on the market. Our PVC butterfly valve body is thicker, stronger, good pressure bearing and not easy to deform. Our valve seat and seal adopt industrial grade EPDM, which has excellent corrosion resistance and more durable, and improves the service life of the valve seat. Generally, NBR or natural rubber seat and seal material are used in the water supply pvc butterfly valves, which can not be applied to the field of industrial corrosion protection. Our valve stems are all made of 304 or 316 materials, because the sealing performance of the valve seat of any PVC butterfly valve will decline after a certain period of service, resulting in the leakage of medium into the valve stem. If the valve stem is not made of stainless steel, the valve stem will be easy to rust, and the strength decline will cause the valve stem to break. So PVC butterfly valves have much diffe
    2019-12 06
  • PVC ball valve types, characteristics and applications RMI PLASTIC offer several types of PVC ball valves, include true union ball valve, flange ball valve, three way ball valve, compact ball valve etc. The most widely used is PVC ball valve true union type and PVC ball valve flange type.The principle and application of these two types PVC ball valves are basically the same, but their structure and characteristics have some difference. PVC ball valve true union type is 3 pcs split body structure, each end socket glue connection with unions, if valve body broken only need to release the union and replace the valve body, will not damage the pipelines. PVC true union ball valve use rubber seals, because of split body there are several positions need install rubber o ring, in this case there are some potential leaking points, though we offer different materials of rubber seal ring according to the different mediums, but sometimes the o ring will invalid due to improper material selection, high temperature and long-term use, and cause valve leaking problem. The PVC ball valve true union type size range from DN15 to DN100, but the regular used size is DN15 to DN50, because size larger the leaking risk is higher, and we suggest use flange type ball valve. PVC ball valve flange type is one piece body injection molded, simple structure and durable, there is no rubber o rings in the valve, so no need to consider the rubber chemical resistance when select the material, stem packing is PTFE compressed. So the PVC flange ball valve has less leaking points. Flange end enable to connect to the different material and different standard pipelines, generally it fit flange standard DIN PN10/16, ANSI CL150 and JIS 10. PVC ball valve flange type size from DN15 to DN250, size upper DN50
    2019-11 20
  • Plastic diaphragm valve is a special type of cut-off valve. The biggest difference between the plastic diaphragm valve and other valves is that the structure without stuffing box is adopted; the rubber diaphragm can completely isolate the corrosive medium in the flow passage from all driving parts, thus eliminating the disadvantages of the common valve such as "running, emitting, dripping and leaking". The features of plastic diaphragm valve as follows (1) the soft rubber diaphragm valve can cut off the medium. (2) because rubber has certain corrosion resistance, it is generally used as corrosion-resistant materials to promote application, and continues to today. (3) the flow path is simple and has the function of "self-cleaning", which can be used for unclean media. (4) it is suitable for the transportation of corrosive medium, the regulation of closure and flow. The body touch medium use PVC, CPVC, PVDF , PP. It has excellent corrosion resistance, convenient operation, light volume and can replace stainless steel valves. (5) the seal diaphragm is made of PTFE or PFA, with fold resistance ≥ 1200 times, and corrosion resistance equivalent to F4. (6) adopt screw lifting structure, with large opening and closing torque and good stability.
    2019-11 14