Humidifying membranes for fuel cells currently manufactured by NOK are hollow fiber membranes with nano-order pores provided on the membrane surface in our unique composition design. When air containing water vapor (wet gas) is brought into contact with the membrane, the water vapor is condensed to water in the pores and returned to vapor on…
Concentration of immersion chemical Citric acid: 50,000 ppm Sodium hypochlorite: 3,000 ppm Immersion temperature 25℃ (ambient temperature) Immersion duration 1,200 hours(equivalent to 10 years: Chemical cleaning for 2 h/week) , Effective length of membrane 1500mm Filter system Suction from the inner side of the membrane Suction pressure -60kPa Substance to be filtered Raw water sludge…
■ Follow fibers in 3D network structure thanks to our unique membrane production technology ■ Enhanced effects of backwash thanks to its asymmetric structure ■ High membrane flux and extended service life Basic Information Documents and Catalogs Basic specifications Membrane material PSU Cutoff molecular weight 150,000 Da Nominal membrane area 45 ㎡ Pure water flux…
Standard modules We have achieved the highest flow rate as membranes for domestic water purifiers in the industry.A wide variety of hollow fiber membranes are available. MF and UF membranes can be selected according to purposes.They may be used with our unique hydrophobic membranes (for air bleeding) to solve air lock problems. List of standard…
General-purpose seal technology Seals are indispensable sealing devices used in automobiles, airplanes and other vehicles, construction machines, equipment at petrochemical plants, home appliances, and various other machines. NOK offers a wide variety of seal products of very high reliability, including oil seals, based on its constant and focused research on materials, workings, and design. MORE…
General-purpose seal technology Seals are indispensable sealing devices used in automobiles, airplanes and other vehicles, construction machines, equipment at petrochemical plants, home appliances, and various other machines. NOK offers a wide variety of seal products of very high reliability, including oil seals, based on its constant and focused research on materials, workings, and design. MORE…
Long-life, highly reliable lubricants effective even under extreme conditions. NOK markets special lubricants imported or manufactured by NOK Kluber Co., Ltd., a joint venture between NOK CORPORATION and Germany-based Kluber Lubrication LTD.The special lubricants we deal in possess a strong resistance to very high and low temperatures, high speed, high load as well as tolerance…
Rope-operated manual starting devices for compact internal combustion engines. Used to start electric generators, lawnmowers, and farm engines. Recoil starters are rope-operated manual starting devices for compact internal combustion engines, and are commonly used to start electric generators, lawnmowers, outboard motors, and farm engines.NOK’s recoil starters are highly regarded for their durability, reliability, stable functionality,…
Valves to control the direction of cooling media flowing in compressors. There are two major categories: single-body machined components, such as suction valves and discharge valves; and various special high precision machined products. NOK’s compressor valves are used to control the coolant flowing direction in the compressor in a car air-conditioner, a room air-conditioner, a…
Fluid control equipment, including pressure control devices, flow-rate controllers, and flow-path switching units, that are incorporated into household appliances carrying water, gas, and other special fluids. NOK has successfully integrated sealing and actuator techniques to provide fluid control equipment, such as pressure control devices, flow-rate controllers, and flow-path switching units, that are incorporated into household…
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