Company Development

  • 1933
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  • Sentaro Miyawaki establishes Miyawaki Shoten machinists’ tools in Osaka’s Nishi-ku district.
  • 1937
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  • mark valve released
  • 1949
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  • Miyawaki Model F duplex steam trap using patented pressure differential technology released
  • 1950
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  • Model R steam trap released
  • 1953
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  • MIYAWAKI Steam Trap Manufacturing Co., Ltd. established
    Head office/factory relocated to Itachibori in Osaka’s Nishi-ku
  • 1955
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  • Tokyo sales office and Nagoya sales office established
  • 1957
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  • Head office/factory relocated to Chiyozakicho in Osaka’s Nishi-ku
    Model S disk steam trap released
  • 1958
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  • Miyawaki Seiki Kogyo Co., Ltd. established
  • 1962
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  • Model B bimetal steam trap based on technology provided by Dr. Domnick & K. Schroeder from West Germany released
  • 1965
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  • Model C high-temperature high-pressure pop bimetallic steam trap released (original incarnation of the temperature control trap)
  • 1968
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  • Model G ball float steam trap released
  • 1969
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  • Head office/factory relocated to Tagawakita, Yodogawa-ku, Osaka (current location)
    Model ER inverted bucket steam trap released
  • 1973
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  • TB2 energy-saving temperature control trap released
  • 1976
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  • The company’s first president, Sentaro Miyawaki, passes away
    Koresuke Miyawaki appointed president
  • 1977
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  • ES8 inverted bucket steam trap released
  • 1981
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  • Model W radiator trap released
  • 1982
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  • Steam trap technology transfer to BVMI (UK)
    RE1 direct drive pressure reducing valve for steam released
    STC-011 steam trap diagnostic device released
  • 1984
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  • Sales partnership concluded with ITT (USA), Miyawaki expands into the American market
  • 1986
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  • CI introduced, and company name changed to Miyawaki Inc.
    RE10 compact, lightweight micro bellows pilot operated pressure reducing valve released
    TB3/TB5 temperature control traps released
  • 1987
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  • RE3 ultra-compact, lightweight micro bellows pilot operated pressure reducing valve released
    TB51/TB52 high-pressure temperature control traps released
  • 1988
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  • Tetsuo Kambe appointed president
    H3 separator for steam released
  • 1989
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  • G11/G12 ball float steam traps and AG11/AG12 air traps released
    S31N disk steam trap released
    TB8/TB8B temperature control traps released
    TR1 temperature sensitive valve released (uses a shape-memory alloy)
  • 1990
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  • S51N disk steam trap released
    F1 anti freeze valve released
    G15 ball float steam trap released
  • 1991
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  • Miyawaki GmbH subsidiary established in Berlin, Germany
    MS1 high temperature shut off system
  • 1992
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  • CV10 water hammer prevention valve released
    CV2 inline check valve released
    Faucon steam-based instant water heater released
  • 1993
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  • ISO9002 certification acquired (head office/factory)
  • 1994
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  • RE2 direct drive pressure reducing valve for steam released
  • 1996
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  • PM10 portable machine checker released
  • 1999
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  • DF1 diaphragm steam trap released
  • 2001
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  • ISO14001 certification acquired (head office/factory)
    Dr. Trap PM301 steam trap management system released
    HD self-powered steam-based instant water heater released
  • 2003
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  • ISO9001 certification acquired (head office/factory)
    Dr. Trap Jr. PM15 steam trap management system released
  • 2004
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  • QuickHot LM15 Steam-based Instant Water Heater released
  • 2005
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  • CX1 check valve released
    REC1 direct acting pressure reducing valves for steam
    T3 sight glass, TB7 temperature control trap
    SC31 disk steam trap
    DV1 diaphragm steam trap with bypass valve released
  • 2006
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  • TBC2 temperature control trap released
  • 2007
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  • TB9 temperature control trap released
    QuickHot LM15-II/LH15 steam-based instant water heaters released
  • 2008
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  • GC20 ball float steam trap released
    CV2C check valve released
  • 2009
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  • Kensuke Miyawaki appointed president
    GLP31 pumping trap
    GH50 ball float steam trap
    GTH12 ball float steam trap
    CV5R soft sealing check valve released
  • 2010
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  • GH40 ball float steam trap released
  • 2011
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  • S55H disk steam trap released
    S55N disk steam trap released
    AGH12 ball float air (gas) trap released
  • 2012
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  • TB7N temperature control trap released
    TB9N temperature control trap released
    AT9N air vent released
  • 2013
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  • CVC3 check valve released
    AGH50 ball float air (gas) trap released
    Wuxi office established in China’s Jiangsu Province
  • 2014
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  • TBH high-pressure temperature control trap released
    GL11 pumping trap released
    DC2R for sterilizers released
  • 2015
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  • LM15-Ⅲ steam-based instant water heater released
  • 2016
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  • CVU15 vacuum breaker released
    GLP81 pumping trap released
  • 2017
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  • G20N and G21N-F ball float steam traps released
  • 2018
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  • Chinese subsidiary China Miyawaki (Miyawaki West Co., Ltd.) established in Wuxi, China
    GL81 pumping trap released
    CVC3 check valve released
  • 2019
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  • Faucon HF25 steam-based instant water heater
  • 2019
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  • TB7N-SR and TB9N-SR temperature control traps with scale removal mechanism released
    TBU4 series of temperature control traps with scale removal mechanism released
  • 2020
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  • LM15-Ⅳ steam-based instant water heater (passes leaching performance tests) released

Awards

  • 1950
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  • Received the Osaka Award for Excellence in Invention
  • 1953
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  • Received Osaka Prefectural Governor’s Award for Success in Invention
  • 1955
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  • Received the Award for Excellence from the Japan Institute for Promoting Invention and Innovation
  • 1960
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  • Sentaro Miyawaki awarded the Medal of Honor with Purple Ribbon
  • 1975
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  • Received the CP Idea Award at the Chemical Plant Show (TB temperature control trap)
  • 1977
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  • Received the Award for Excellence in Energy Saving at the Energy Saving Exhibition (TB temperature control trap)
  • 1978
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  • Received the Award for Excellence in Energy Saving at the Energy Saving Exhibition (ES inverted bucket steam trap)
  • 1980
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  • Received the Award for Excellence in Energy Saving at the Energy Saving Exhibition (ER inverted bucket steam trap)
  • 1981
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  • Received the Japan Machinery Federation’s Energy-Efficient Machinery Award for 1980 (TB10/11 temperature control traps)
  • 1981
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  • Received the Award for Excellence in Energy Saving at the Energy Saving Exhibition (TB1 temperature control trap)
  • 1984
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  • Received the Award for Excellence in Energy Saving at the Energy Saving Exhibition (STC-011 steam trap diagnostic device)
  • 1987
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  • Received the Award for Excellence in Energy Saving at the Energy Saving Exhibition
    (RE10 micro bellows pilot operated pressure reducing valve)
  • 1988
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  • Received the Japan Machinery Federation’s Energy-Efficient Machinery Award for 1987
    (RE3 ultra-compact, lightweight micro bellows pilot operated pressure reducing valve)
  • 1990
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  • Received the Award for Excellence in Energy Saving at the Energy Saving Exhibition (TR1 temperature sensitive trap)
  • 1991
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  • Received the Award for Excellence in Energy Saving at the Energy Saving Exhibition (MX1 mixing valve)
  • 1992
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  • Received the Award for Excellence in Energy Saving at the Energy Saving Exhibition (CV10 water hammer prevention valve)
  • 1993
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  • Received the Award for Excellence in Energy Saving at ENEX’93 (Faucon steam-based instant water heater)
  • 1994
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  • Received the Award for Excellence in Energy Saving at ENEX’94 (BIS1 trap with built-in bypass circuit)
  • 2002
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  • Received the Japan Machinery Federation President's Award for Energy-Efficient Machinery in 2001
    (Dr. Trap PM301 steam trap management system)

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