| 1949-04 |
Released valve product for synthetic fiber plant. |
| 1949-05 |
Founded by Mitsuo Kishikawa as Kishikawa Valve Manufacturing Co., Ltd. Early products include valves for penicillin production equipment, vacuum valves, circuit breaker valves, and transformer valves. |
| 1959-08 |
Reorganized as Kishikawa Special Valve Manufacturing Co., Ltd. |
| 1961-09 |
Completed Phase 1 construction of the Tokai Factory. |
| 1963-06 |
Completed development of Rupture Disks. |
| 1966-08 |
Developed a prototype sodium (Na) valve for Fast Breeder Reactors under a research program commissioned by the Science and Technology Agency for peaceful nuclear applications. |
| 1967-03 |
Opened Osaka Branch Office. |
| 1970-04 |
Completed Phase 2 expansion of the Tokai Factory. |
| 1971-06 |
Consolidated Tokyo Factory production facilities into Tokai Factory. |
| 1973-04 |
Relocated Headquarters to Minami-Oi, Shinagawa-ku, Tokyo. |
| 1974-08 |
Completed Phase 3 construction of Tokai Factory. |
| 1977-10 |
Began R&D of ultra-high and high vacuum valves for fusion research (JT-60 or Japan Torus 60, tokamak-type nuclear fusion experimental reactor). |
| 1986-10 |
Developed and launched All-Metal Fast Closing Valve (FCV). |
| 1987-06 |
Developed and launched All-Metal Double-Sealed Gate Valve (AI). |
| 1989-12 |
Product release of non-sliding mechanism valve. |
| 1990-07 |
Manufactured ultra-short pulse electron gun for FEL. |
| 1990-11 |
Successfully developed Ultra-Clean Pendulum Gate Valve in joint research with Tohoku University. |
| 1992-11 |
Supplied All-Metal Gate Valves and angle valves for SPring-8. |
| 1992-11 |
Product release of Unicam Gate Valve. |
| 1996-09 |
Product release of enhanced door valve. |
| 1998-04 |
Company name changed to V TEX Corporation |
| 1998-08 |
Certified for ISO 9001. |
| 1999-06 |
Acquired Nichizou Precision Polishing Co., Ltd. |
| 2001-07 |
Product release of Penduroll Valve. |
| 2003-09 |
Opened Omiya Workshop (Hitachi-Omiya, Ibaraki). |
| 2003-10 |
Registered ISO 9001:2000. |
| 2004-06 |
Established clean room facility in South Korea. |
| 2005-01 |
Opened South Korea Branch (Seongnam, Gyeonggi-do). |
| 2006-02 |
Developed valve “BOXER” for solar panel manufacturing equipment. |
| 2006-02 |
Established clean room building at Tokai Factory. |
| 2006-07 |
Divested Nichizou Precision Polishing Co., Ltd. |
| 2007-09 |
Introduced three new machining tools. |
| 2008-03 |
Introduced two new machining tools. |
| 2008-12 |
Developed in-house pressure control valve controller. |
| 2010-07 |
Relocated South Korea Branch to Ansan, Gyeonggi-do. |
| 2011-07 |
Increased capital by JPY 200 million. |
| 2012-01 |
Increased capital by JPY 400 million. |
| 2012-04 |
Established VTEX Korea Co., Ltd. |
| 2012-07 |
Certified for ISO 14001:2004 at Tokai Factory. |
| 2015-01 |
Obtained ASME (UD) Stamp for Rupture Disks. |
| 2015-05 |
Established V TEX America Inc. |
| 2016-04 |
Approved as vendor by Saudi Aramco for Rupture Disks. |
| 2017-05 |
Established V TEX Shanghai Co., Ltd. |
| 2019-04 |
Established production building for semiconductor equipment valves at Tokai Factory. |
| 2022-08 |
Relocated Osaka Branch to Kawaramachi, Osaka. |
| 2022-10 |
Relocated Headquarters to Omori Prime Building, Shinagawa, Tokyo. |
| 2025-02 |
Certified for ISO 14001:2015 at Higashi-Maizuru Factory. |
| 2025-03 |
Expanded Clean Room No.1 at Higashi-Maizuru Factory. |
| 2026-06 |
Becoming a subsidiary of KITZ Corporation. |
