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Yokota Manufacturing Co., Ltd.

Manufacturing Industry

Hiroshi YOKOTA (Mr.)
Year established
Postal (zip) code
Company address
1-3-6, Minami-yoshijima, Naka-ku,
Corporate pictur
Company PR
We offer fluid control solutions, using unique products created from new patented theories and our extensive know-how to resolve a broad range of problems (such as degassing defoaming, self-priming, water hammer prevention, automated control, and corrosion prevention) which occur when working with water and other fluids. The products which we develop and manufacture include degassing equipment which can hygienically and economically prevent corrosion and rust in building and apartment pipes; degassing equipment which can efficiently remove bubbles which form during the manufacture of foods and other products; self-priming pumps which take up and transport water and air together; enhanced self-priming pumps which can easily take up and transport waste water and sludge, check valves which can prevent the water hammer effects in piping; automated control valves which can control flow, pressure, and water level without the use of electricity; and special stainless steel alloys which do not corrode even when exposed to seawater and brine.
Picture 1

Defoaming equipment for chemical industries: Continuously defoams, sucks, and transfers fluids which contain gas bubbles.

Picture 2

Defoaming/degassing equipment for food industries (sanitary type):Separates and removes dissolved gasses from liquids with surprising speed

Major Products
Defoaming equipment, degassing equipment, self-priming centrifugal pumps
Non-water hammer check valves
Constant flow regulator valves
Float type regulator valves
Pilot type regulator valves
Technology Employed
Fabricated metal products manufacturing industry
Our UHN type pump demonstrates outstanding self-priming performance utilizing our internationally patented air and water separator.
Fabricated metal products manufacturing industry
Our deaeration and degassing equipment removes air and dissolved gasses from liquids with phenomenal efficiency.
Fabricated metal products manufacturing industry
Our enhanced self-priming pump is ideal for taking up and transporting fluids which contain air bubbles, as well as high viscosity liquids.
Fabricated metal products manufacturing industry
Our non-water hammer check valve uses our patented water hammerless technology which eliminates water hammer at low cost.
Fabricated metal products manufacturing industry
Our wafer-type check valve has a simple, construction, and is applicable to all types of liquid qualities.
Fabricated metal products manufacturing industry
Our variable constant flow control valve freely regulates the amount of flow. Our innovative technology makes this a good multi-use control valve.
Fabricated metal products manufacturing industry
Our liquid level control valve (with an excessive flow check mechanism) has a smaller float and tank.
Fabricated metal products manufacturing industry
Our constant pressure valve is perfect in sealing when stopping the flow of water. Additional flow rate control function is available.
Primary Area of Technical Expertise

We manufacture our corrosion and wear-proof stainless steel products in our factory from the casting to the final product.
Our products serve in many fields such as:
agricultural irrigation, drainage systems, chemical factories, pollution prevention equipment, water purifying facilities, sea water related facilities, etc.


Joint research with National Research Institute of Agricultural Engineering of the Ministry of Agriculture, Forestry and Fisheries (constant flow valve). Joint research with the Ministry of Agriculture, Forestry and Fisheries (strainer). 114 Japanese patents, utility models, designs, and trademarks. 87 foreign patents, designs, and trademarks.

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