Matsuo valve Inc

Language 日本語/English





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In this era of acute globalization, the industry of valves, as well as other industries, has come to a major turning point. To overcome this dramatic change, we must develop more flexibility as a corporation.
Each of our members, from freshman to experienced staff, work hard to fulfill their respective duties which creates a synergy allowing us to continuously provide quality products to customers.
We are very much committed to making our customers happy and satisfied with our products.




We manufacture and sell various types of valves, specifically the valves for marine vessels, water treatment facilities, and various industrial plant buildings.  Although those valves are generally purpose-specific, they could have crossover usage for different types of facilities. For example, one type of valve commonly used for water treatment facilities might also serve a unique purpose for ship building, and vice versa.  Our extensive experience and skilled experts allow us to take a flexible approach in executing horizontal deployment of these different valves to make the best proposals for your specific needs.


1.Achieve continuous improvements in order to contribute to our society’s prosperity by making reliable and satisfactory products.
2.Present and provide reliable products while all company staff strive to maintain continuous improvements in our production system.

Corporate Information

Corporate Name Matsuo Valve Inc.
Date of Foundation February, 1958
Capital 10,000,000 yen
Company’s executives Seikichi Matsuo, President and CEO
Naoki Matsuo, Executive Director
Ikuyo Matsuo, Director
Masako Fujimoto, Corporate Auditor
Employees 34  (as of July 1st, 2013)
Major Products Marine Valves (Cast Iron / Ductile Cast Iron / other marine industry products)
Water Works Valves (Cast Iron / Ductile Cast Iron)
Certificates -JIS F 7425 Marine Cast Iron Valve (HKJP7001)
-JIS F 7305 Marine Ductile Cast Iron Valve (HKJP07001)
-The certified testing plant by Japan Water Works Association
-ISO9001:2008 (LRQA)
Main Banks Hikone Ekimae Branch, Shiga Bank
Sawayama Branch, Shiga Chuo Shinkin Bank



245 Tomachi Hikone, Shiga 522-0009
TEL +81-749-22-1564 FAX +81-749-24-5846


1913-53 Kitahassakucho Midori-ku Yokohama, Kanagawa 226-0021
TEL +81-45-532-9470 FAX +81-45-931-0534 

Corporate History

Apr, 1950 Jintaro Matsuo started production and sales of valves and cocks at Kitashinmachi of Hikone city as a small business owner
Feb, 1958 Converted it to a corporation and established Matsuo Valve Inc. at the current location
May, 1965 Received approval for ‘JIS B 2031: Gray Cast Iron Valve’ with the JIS approval number, 565011, given by the Ministry of International Trade and Industry (the present Ministry of Economy, Trade and Industry)
Dec, 1966 Received approvals from the Ministry of Transport (the present Ministry of Land, Infrastructure, Transport and Tourism) for Marine Cast Iron Globe Valves and Angle Valves of small, medium and large diameters, with JIS approval numbers, ‘FA-34’, ‘FB-34’ and ‘FC-8’ respectively
Oct, 1968 Received approvals from the Ministry of Transport for Marine Cast Iron Gate Valves of small and large diameter, with JIS approval numbers, ‘FD-19’ and ‘FE 19’ respectively.
Nov, 1976 Received approvals from the Ministry of Transport for ‘JIS B 2062 Gate Valve for Tap Water’, with JIS approval number: of ‘565011
Mar, 1977 Received approvals from the Ministry of Transport for Marine Cast Iron Screw Down Check Globe Valves and Angle Valves of small, medium, and large diameter, with JIS approval numbers of ‘FA-34’ , ‘FB-34’ and ‘FC-8’
Sep, 1977 Certified as an official testing plant by Japan Water Works Association with the license number of ‘R-24’
Dec, 2001 Seikichi Matsuo became President and CEO
Apr, 2006 Received approvals from LRQA (Lloyd’s Register Quality Assurance) for ISO 9001:2000 and JIS Q 9001:2000, with the license number of YKA 4003487/J
(Subject Categories: designing and production of JIS marine valves, water works valves and gray cast iron valves)
Mar, 2007 Received JIS approvals from HK (the Ship Equipment Inspection Society of Japan) for marine cast iron valves (JIS F 7425) and marine ductile cast iron valves (JIS F 7505), with the approval number of HKJP7001
Apr, 2009 Renewed approvals for ISO9001:2000 and JIS Q 9001:2000 with LRQA
Aug, 2009 Renewed approvals from ISO9001:2001 and ISO9001:2000 to ISO9001:2008 and ISO9001:2008 with LRQA
May, 2011 Established the Kanto Area Sales Office in Yokohama City