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Corporate HistoryAbout OKM

Office-related information

January 1902Saw cutting factory founded by Seitaro Okumura in Gamo Town, Shiga Prefecture
August 1952Transition to a factory specializing in valve cocks with expansions in manufacturing and sales
June 1962Company name changed to Okumura Engineering Works Co., Ltd.
June 1969Established and moved offices to new head office and factory
November 1975Completed construction of a large factory for machines
April 1980Established a new integrated assembly line for butterfly valves
October 1990Established OKM Valve Malaysia Sdn. Bhd.
August 1992Completed construction of a new factory
April 1993Company name changed to Okumura Engineering Corporation
October 1997Acquired ISO 9001 certification
June 1998Completed construction of a new head office
February 2003Established the Suzhou Okumura Valve Limited Company in China
December 2008Moved the Malaysia Factory to a new building
August 2018Acquired ISO 27001 certification

Product Development

May 1967Developed the Neo Pinch Valve
August 1977Developed the 515 Butterfly Valve
March 1982Developed the ML-515 Electronic Butterfly Control Valve
OctoberDeveloped the 5400 High-Performance Butterfly Valve
September 1984Developed the 336D Knife Gate Valve
June 1986Developed the VAVTROL-S1 Electronically Controlled Air Conditioning Valve
October 1988Developed the VAVTROL-S2 Electronically Controlled Air Conditioning Valve
July 1992Developed the 601A Aluminum Butterfly Valve
Developed the 615X General-Purpose Butterfly Valve
Developed the 606F Flange-Type Butterfly Valve
June 1993Developed the Jumbo Butterfly Valve
January 1995Developed the 336S Knife Gate Valve
November 1997Developed the 6424 Fire-Safe Butterfly Valve
August 1998Developed the 622H High-Pressure Butterfly Valve
March 1999Developed the 607F Flange-Type Butterfly Valve
OctoberDeveloped the VAVTROL-DN Electronic Butterfly Valve
June 2000Developed the 602 Aluminum Die Cast Butterfly Valve
Developed the 336J Multi-Seat Type Knife Gate Valve
August 2001Developed the 618H High-Pressure Butterfly Valve
April 2002Developed 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 2004Developed the 336J Knife Gate Valve
October 2005Developed the 111S, 110S, 121S, and 120S Wafer Check Valves
August 2006Developed the 603S and 612S butterfly valves for use with powders
April 2008Developed a marine hatch rotary sluice valve
Developed the 111S, 110Z, 121S, and 120Z Wafer Check Valves
March 2010Developed the 618F | 622F High-Pressure Flange-Type Butterfly Valve
December 2011Developed the 635N Fluororesin-Lined Butterfly Valve
April 2016Developed the Exv series of Butterfly Valves for Marine Emission Control System
September 2016Remodel of the VAVTROL-DN Electronic Butterfly Valve
April 2017Developed the 637N Fluororesin-Lined Butterfly Valve