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Historical Record

Jun. 1951 Authorized by the Ministry of International Trade & Industry to indicate Japan Industrial Standards (JIS) Specification on the spring loaded Safety and Relief Valve for land-use steam boilers. (Sanction No.574)
(On Dec.13, 1966, additionally authorized on the spring loaded Safety and Relief Valve of full capacity type for land-use steam boilers)
Jan. 1953 Sanctioned by the Ministry of Labor on the performance of the relief valves for boiler use manufactured by our Company in accordance with the provision of Article 36 paragraph 3 of the Labor Safety and Sanitation Regulation. (Sanction No.7005)
Mar. 1954 Authorized by the Ministry of Transportation to indicate JIS mark on the forged and cast steel globe and angle valves for vessel use manufactured by our Company.
Sep. 1960 At the request of TOKIKO K.K. who formed a technical license agreement with Fisher Governor, Ltd., top ranking in USA in the production of automatic control valves, the Company took part in the production of valves, thereby coming into indirect cooperation with Fisher Governor.
Jun. 1967 Authorized by API to indicate the API Monogram on all valves to satisfy the requirements of API, Standard 600.
Oct. 1970 Concluded with the Power Reactor & Nuclear Fuel Development Corporation a contract on commissioned study on regulating valve of 12 inch (300mm) in size and manufacture thereof, etc. as a task for research and development of large sodium valves to be used for Fast Breeder Reactor (FBR).
Nov.1970 Concluded with Sulzer Brothers, Ltd., Switzerland, the "Technical license agreement on Sulzer control Valves and High Temperature & High Pressure Valves for Thermal and Nuclear Power Plants".
Jun. 1971 Authorized by the Minister of International Trade & Industry as the Category No.2 sanctioning examiner under the provisions of the High Pressure Gas Control Law and Article 9, paragraph, 1 item 11and item 12 etc. of the Liquefied Petroleum Gas Safety Regulations.
(Sanction No. Examination MA No.24919, Manufacture MB No.24919)
Dec. 1971 Concluded with the Power Reactor & Nuclear Fuel Development Corporation a contract on commissioned study on the electric motor operated wedge gate valve of 20 inch (500mm) in size and manufacture thereof, etc. as a task for research and development of large sodium valves to be used for Fast Breeder Reactor (FBR).
Mar. 1972 To strengthen the manufacturing and selling systems for automatic control valves in Japan, Fisher Controls Co., USA, established a new company, Japan Fisher (KK), under the technical license agreement. Under the business cooperation with Japan Fisher, our Company was fully commissioned to manufacture the main body of the automatic control valves to be used in the thermal and nuclear power fields.
Aug. 1973 Concluded with the Power Reactor & Nuclear Fuel Development Corporation a contract on commissioned study on butterfly valves of 400mm in size and manufacture thereof, etc. as a task for research and development of large sodium valves to be used for Fast Breeder Reactor (FBR).
Oct. 1976 Obtained ASME authorizations of "N", "NV" and "NPT" stamps.
Apr. 1977 Obtained ASME authorizations of "V" and "UV" stamps.
Dec. 1979 Renewed ASME authorizations of " N " , " NV " and " NPT " stamps.
Jun. 1980 Renewed ASME authorizations of " V " and " UV " stamps.
Jun. 1984 The technical collaboration agreement for manufacturing of valves for high pressure and high temperature service with Bharat Heavy Electricals Limited (a Government of India undertaking) has come into effect.
Jun. 1984 Renewed " V " and " UV " stamps.
Feb. 1986 Renewed Technical License Agreement with Sulzer Brothers, Ltd., Switzerland.
Mar. 1987 Commenced shipment of important valves used for Primary and Secondary loop in Qinshan Nuclear Power Station, China.
Jun.1988 Developed and proof tested THERMAL RELIEF VALVE (TRV) as relaxation of thermal shock because a large amount of drain is generated and discharged from the main steam line and in the drain line, thermal shocks attack the line and valves due to high temperature steam flow to cooled drain.
TRV prevents damage of pipe and valves at Drain piping system in Thermal Power Plants.
We have supplied 45 valves of TRV as Main Steam Drain Valve and Main Steam Warm-up Valve in various thermal power stations since 1988 to 1999.
Mar. 1989 Our own development of Electric Motor Operated Valve Automatic Diagnosis Equipment: Toa Actuator Characterizing System (TACS) started.
Supplied TACS to Kansai Electric Power Company etc., in Sept., 1990.
Sept.1989 Developed and proof tested CERAMIC VALVE, using Ceramics material
which are superior to metal for wear-resistance and highly expected to improve durability of the valve seat for the drain valves which are frequently opened and shut at start up and shut down will damage the stellite faced seat and leak, causing problems at Drain piping system in Thermal Power Plants.
Nov. 1990 Machining Center was introduced.
Oct. 1992 Certified ISO 9001, International Standard for quality control and quality assurance by DET NORSKE VERITAS ( D.N.V ), a third party agency which is authorized by British Trade and Industry Ministry ( DTI ).
At the same time certified "BS5750 : Part 1" , "EN29001" and "JIS Z9901".
Mar. 1998 Developed and supplied size: 500mm, Class 1500, material: SCPH91 (similar to ASTM C12A) for AIR CYLINDER OPERATED SHUT DOWN VALVE FOR TURBINE BLADE OUTLET of 1500 degrees Celsius CLASS H-TYPE ‚f‚`‚r TURBINE of Mitsubishi Heavy Industries, LTD. for combined cycle power stations, now they are under proof testing.
Oct. 1999 Renewed Certificates of ISO 9001, International Standard for quality control and quality assurance by DET NORSKE VERITAS (D.N.V), a third party agency which is authorized by British Trade and Industry Ministry (DTI) as well At the same time certified "BS5750: Part 1", "EN29001" and "JIS Z9901".
Oct. 1999 Developed, proof tested and supplied size: 22" PRESSURE RELIEF VALVES WITH PILOT VALVES AS CROSS-AROUND OF BWR NUCLEAR POWER STATION.
Mar. 2000 To make the organization that strengthens conformed to the unit nature of valve production/sales/ maintenance business to the needs of the client.
TOA VALVE CO., LTD. have established TOA VALVE HOLDING INC. as holding company and a complete parent company which utilizes advantage of stock move system in cooperation with associated company TOA ENGINEERING CO. LTD.; Organization made up mainly of maintenance business.
Its listing of TOA VALVE CO., LTD. will be abolished by the stocks listing of TOA VALVE HOLDING INC. in the Osaka Securities Exchange second section and also the Tokyo Stock Exchange second section
Jun. 2000 TAKADA STEEL CO., LTD. was turned a 100% subsidiary company.
Dec. 2000 The consultant business regarding the acceptance, contracts and also management, technology etc. of the research survey of the various kinds of machine tools and valve were added to the business purpose to prepare for R&D (the research & development) the activity business that TOA VALVE HOLDING INC. promotes.
May. 2005 Obtained "Manufacture License of Special Equipment (Safety Appurtenances of Boiler and Pressure Vessel-Safety valves)" of People's Republic of China.
Oct. 2006 TOA VALVE CO., LTD. has consolidated subsidiary company TAKADA STEEL CO., LTD. (casting and sintering division.) by Absorption-type Company Split.
Oct. 2008 TOA VALVE CO., LTD. has consolidated associated company TOA ENGINEERING CO. LTD. (maintenance division) by Absorption-type Merger and change the trade name to TOA VALVE ENGINEERING INC.
Apr. 2010 TOA VALVE HOLDING INC.(holding company) has consolidated associated company TOA VALEVE ENGINEERING INC. by Absorption-type Merger and change the trade name to TOA VALVE ENGINEERING INC.
Jul.2010 The technical license agreements for manufacturing of Forged Globe Valves for high pressure and high temperature service and Quick Closing Non-return Valve with HE Harbin Power Plant Valve Company, China have come into effect.
Feb.2011 Started selling "Hydraulic Nut" under licensing agreement with Technoplants Inc., Tokyo, Japan.
Apr.2013 The technical license agreements for manufacturing of Moisture Separator Reheater Relief Valve and Quick Closing Non-return Valve for nuclear power plant with HE Harbin Power Plant Valve Company, China have come into effect.