January 1902 | Saw cutting factory founded by Seitaro Okumura in Gamo Town, Shiga Prefecture. |
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August 1952 | Transition to a factory specializing in valve cocks with expansions in manufacturing and sales. |
May 1962 | Company name changed to Okumura Engineering Works Co., Ltd.. |
June 1969 | Established and moved offices to new head office and factory. |
November 1975 | Completed construction of a large factory for machines. |
April 1980 | Established a new integrated assembly line for butterfly valves. |
October 1990 | Established OKM Valve Malaysia Sdn. Bhd. |
August 1992 | Completed construction of a new factory. |
April 1993 | Company name changed to Okumura Engineering Corporation. |
October 1997 | Acquired ISO 9001 certification. |
June 1998 | Completed construction of a new head office. |
February 2003 | Established the Suzhou Okumura Valve Limited Company in China. |
August 2006 | Established Suzhou Okumura Valve Trading Co., Ltd. to sell valves inChina. |
December 2008 | Moved the Malaysia Factory to a new building. |
July 2011 | Representative office opened in Ho Chi Minh City, Vietnam. |
March 2012 | Due to a change in Chinese domestic law, closed Suzhou Okumura Valve Trading Co., Ltd. |
September 2012 | Commenced sales in China through the Suzhou Okumura Valve Co., Ltd. |
August 2018 | Acquired ISO 27001 certification. |
March 2019 | Established OKM VALVE (JIANGSU) CO.,LTD in China. |
April 2019 | Established Shiga Higashiomi Factory in Higashiomi City, Shiga Prefecture. |
June 2020 | Selected as a"2020 GLOBAL NICHE TOP 100" by the Ministry of Economy, Trade and Industry. |
October 2020 | Established Research and Development Center in Yasu City, Shiga Prefecture. |
December 2020 | Listed on the Second Section of the Tokyo Stock Exchange. |
February 2021 | Moved the Head Office to Yasu City, Shiga Prefecture. |
March 2021 | Representative Office of the Republic of Korea opened in Busan Metropolitan City, Republic of Korea. |
June 2021 | The Ministry of Economy, Trade and Industry (METI) selected the company’s pursuit of R&D concerning large-diameter butterfly valves for liquid hydrogen as a “Supporting Industry” project (a project to support the advancement ofstrategic fundamental technologies). |
April 2022 | Moved to the Tokyo Stock Exchange Standard Market following the reorganization of the Tokyo Stock Exchange's stock market. |
February 2023 | Due to the move of base in China to OKM VALVE (JIANGSU) CO.,LTD, completed the liquidation the Suzhou Okumura Valve Limited Company. |
May 1967 | Developed the 703 Neo Pinch Valve. |
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March 1972 | Developed the 501 Butterfly Valve. |
August 1973 | Developed the 505 Butterfly Valve. |
August 1977 | Developed the 515 Butterfly Valve. |
March 1979 | Developed the 336 Knife Gate Valve. |
March 1982 | Developed the ML-515 Electronic Butterfly Control Valve. |
October | Developed the 5400 High-Performance Butterfly Valve. |
September 1984 | Developed the 336D Knife Gate Valve. |
June 1986 | Developed the VAVTROL-S1 Electronically Controlled Air Conditioning Valve. |
October 1988 | Developed the VAVTROL-S2 Electronically Controlled Air Conditioning Valve. |
July 1992 | Developed the 601A Aluminum Butterfly Valve. Developed the 615X General-Purpose Butterfly Valve. Developed the 606F Flange-Type Butterfly Valve. |
June 1993 | Developed the Jumbo Butterfly Valve. |
January 1995 | Developed the 336S Knife Gate Valve. |
November 1997 | Developed the 6424 Fire-Safe Butterfly Valve. |
August 1998 | Developed the 622H High-Pressure Butterfly Valve. |
March 1999 | Developed the 607F Flange-Type Butterfly Valve. |
October | Developed the VAVTROL-DN Electronic Butterfly Valve. |
June 2000 | Developed the 602 Aluminum Die Cast Butterfly Valve. Developed the 336J Multi-Seat Type Knife Gate Valve. |
August 2001 | Developed the 618H High-Pressure Butterfly Valve. |
April 2002 | Developed the 612X General-Purpose Butterfly Valve. Developed the 606K Flange-Type Butterfly Valve. Developed the 603A Aluminum Die Cast Butterfly Valve (PPS Disc). Developed the 5410 High-Performance Butterfly Valve. |
April 2004 | Developed the 336J Knife Gate Valve. |
October 2005 | Developed the 111S, 110S, 121S, and 120S Wafer Check Valves. |
August 2006 | Developed the 603S and 612S butterfly valves for use with powders. |
April 2008 | Developed a marine hatch rotary sluice valve. Developed the 110Z and 120Z Wafer Check Valves. |
March 2010 | Developed the 618F | 622F High-Pressure Flange-Type Butterfly Valve. |
December 2011 | Developed the 635N Fluororesin-Lined Butterfly Valve. |
April 2016 | Developed the Exv series of Butterfly Valves for Marine Emission Control System. |
September 2016 | Remodel of the VAVTROL-DN Electronic Butterfly Valve. |
April 2017 | Developed the 637N Fluororesin-Lined Butterfly Valve. |