| 1919 |
- Kitazawa Manufacturing Works founded in Kamisuwa,Nagano Prefecture,to start the production of valves and cocks.
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| 1938 |
- Toyo Valve Industry Co., Ltd. established by Kitazawa Manufacturing Works.
|
| 1943 |
- Kitazawa Manufacturing Works reorganized as Kitazawa Industry Co., Ltd.
with its head office in Tokyo.
|
| 1945 |
- Resumed valve production for civilian use and became an designated
manufacturer by Occupation Army Headquarter.
|
| 1946 |
- Received the valve industry's first designation from the Tokyo and
Nagoya Bureaus of the Japanese National Railways.
|
| 1947 |
- Started the production of cast steel valves together with reopening export business.
|
| 1951 |
- Designated as a JIS-approved factory for cast bronze valves.
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| 1953 |
- Toyo Valve Industry Co., Ltd. annexed to Kitazawa Industry Co., Ltd.
|
| 1955 |
- As a JIS-approved factory, granted the Award from the Minister of
Transportation for excellent quality control.
|
| 1963 |
- Kitazawa Industry Co., Ltd. renamed Toyo Valve Co., Ltd.
|
| 1964 |
- Recognized by MITI as the first valve manufacturer for its contribution
to the export business.
|
| 1965 |
- Completed an automated continuous bronze casting foundry, and
introduced modernized valve machining operations.
|
| 1966 |
- Qualified as an API(American Petroleum Institute)-approved factory.
- Started the production of its newly developed ductile iron valves.
|
| 1971 |
- Established
Red-White Valve Corp. in the U.S. as a local marketing company.
|
| 1972 |
- Qualified as Class ? authorized in spector(of high-pressure gas valves).
|
| 1974 |
- Completed an automated assembly line of bronze valves.
|
| 1975 |
- Completed the mass-production system of cast iron valves by installing
the high-speed, high-pressure automated molding plant and integrated
valve machining and assembling transfer lines.
- Constructed a distribution center in Suwa City, thus ensuring quick,punctual delivery.
|
| 1979 |
- Paid-in Capital \500 Million.
- Introduced a fully automated high-speed flaskless molding machine.
|
| 1980 |
- Installed a fully automated new Al, Zn diecast machine line.
|
| 1981 |
- Introduced a watercooled hot-blast cupola furnace with the capacity of 6.5 tons per hour.
|
| 1982 |
- Installed a new NC machining line of cast steel valves.
- Introduced a high frequency electric melting furnace.
- Introduced a new fluorescent X-ray spectrometer.
|
| 1983 |
- Introduced a fully automated, new hot forging machine.
- Introduced a new automated ball machining unit.
|
| 1984 |
- Qualified for the production of“fire-safe ”ball valves conforming to API and BS Standards.
- Received type approval from the Japan Waterworks Association for its nylon-lined valves.
- Increased the number of fully automated hot forging machines.
|
| 1985 |
- Increased the number of fully automated hot forging machines.
|
| 1986 |
- Installed a new NC machining line of stainless steel valves.
|
| 1987 |
- Completed an automated assembly & test line of forged ball valves.
|
| 1989 |
- Raised its paid-in capital to \750 Million.
|
| 1990 |
- Established Toyo Valve (Thailand) Co., Ltd. as an independent
production corporation in Thailand.
|
| 1991 |
- Established Tovalengi Co., Ltd. as a maintenance company.
|
| 1992 |
- Raised its paid-in capital to \1750 Million.
|
| 1994 |
- Received an approval for ISO(International Standardization Organization)
9001-Quality Systems for all products.
|
| 1997 |
- Started the operation of Chino Factory.
|
| 1998 |
- June: Sakae Kobayashi was appointed to the president.
|
| 1999 |
- April,Toyo Valve Co.,Ltd.merged with Nihon Bulge Industrial CO.,Ltd.
The company's capital was raised to \1,850 milion and Sakae Kobayashi was
appointed a president of the new company.
- November,received an approval for ISO9002 at Ashigara Factory.
|
| 2001 |
- March: Concluded business tie-up with Higashio Mech Co.,Ltd.
and Buerkert in Switzerland,
and started a business of its "Easy Link" System together.
|
| 2004 |
- March 31: Kitz Material Co., Ltd., a subsidiary of Kitz Corp. took
over the valve business from the former Toyo Valve Co., Ltd., and
renamed itself Toyo Valve Co., Ltd.
- April 1: The new organization made a start under the leadership
of President, Hideki Ozawa
|
| 2007 |
- December : Liquidated Toyo Valve (Thailand) Co., Ltd. (independent production corporation in Thailand.)
|
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