Manufacturing, Sales, and Maintenance of Various Valves, and Their Accessory Parts
Industrial Process Automation Apparatus (Energy Saving Apparatus, Antipollution Apparatus)
Control Valves (pneumatic, electric, electronic, hydraulic)
Safety Relief Valves
Building and Industrial Equipment
District Heating & Cooling Systems
Water Hammer Absorber Units
Environmental Safety Equipment
Qualifications and Certifications
Certified based on High Pressure Gas Safety Law
Certified by ASME (the American Society of Mechanical Engineers), with V and UV code symbol stamps
Company established in Sendai by Shigetoshi Motoyama named Motoyama Shoukai. While engaged in the plumbing design of heating, cooling, and air-conditioning systems, initiated research into the manufacture of metallic bellows under the guidance of Dr. K.Honda (Metallic Materials Laboratory, Tohoku University)
Completed Japan's first metallic bellows and developed components for application, such as steam traps and pressure reducing valves.
Constructed head office and plant at Kita-Sendai. Reorganized as MOTOYAMA ENG. WORKS, LTD.
Received an industrial research grant from the Ministry of Commerce and Industry, and commercialized a direct-reading type depth sounder.
Began manufacturing pneumatic control valves.
Obtained the Japan Industrial Standard display license for vane safety valve (JISB8210), for industrial-use steam boilers.
Supplied non-leakage valves to the atomic energy research institute as a registered manufacturer.
Obtained the Japan Industrial Standard license for steam trap (JISB8402) for heaters.
Authorized to test and manufacture high-pressure equipment by MITI.
Provided the Canadian company W.G.Eliot Co., with pneumatic control valve technology.
Concluded a licensing agreement with the Crosby Valve and Gage Co., of the U.S. for safety valves and safety relief valves.
Qualified by Lloyd's Resister of Shipping for diaphragm actuator No.2800.
Completed the Ohhira test and Experiment Center and initiated full-scale operations.
Obtained model approval from the Japan Water Works Association for the "Shock-Non®" water hammer absorber.
Marketed the MOTOSEAL® general-purpose leak-tight butterfly valve.
Marketed the EXCENTRO® wide-range Butterfly valve mainly for high-temperature use in iron and steel plants.
Designated as test plant for the Japan Water Works Association.
Certified by the American Society of Mechanical Engineers (ASME) for its N, NPT, NV, V, and UV code symbol stamps.
Marketed the GYROLL® eccentric rotating plug valve featuring high control.
Marketed the JNO, JNB series of general-purpose high-performance safety valves.
Announcement of TQC (Total Quality Control activities) adoption.
Obtains technical guidance at Tohoku University, receives grant from the Ministry of International Trade and Industry’s important technology research and development subsidy, and completes development of the Ultra Clean Valve (UCV) for the semiconductor manufacturing gas process, and puts it on sale.
Marketed the JPV series of pilot safety valves.
Multi-function steam trap "UNI TRAP®" NO. 60 goes on sale.
Marketed the MINNOW No.3488 general-purpose compact control valve.
Group receives the Inoue Harushige Prize for the Ultra Clean Valve (UCV).