About Us

Leading manufacturer and distribution of Valves, Fittings, Instrumentation and Controls

Our History

Unimech group, established in 1977, founded in Penang, Malaysia. Since then, we have expanded worldwide, with sales and service centers in South East Asia, Australia, USA, and China. With over 35 years’ experience in the pipeline business, we have always been there to design, produce, service and delivery of our product to thousands of satisfied customers.


U.S. Headquarter

Unimech Flow Inc is established in January 2019 and setup our U.S. headquarter in Houston, Texas. We have been having much success selling directly to the fire protection contractors here in Houston. If you are buying from us in Houston, we can ship it/drop it off to you for free! Let us know if you want to come by to visit our office and warehouse!


Our Brand

Unimech owns several established brand names under its manufacturing division namely ARITA ®, Unijin ®, Q-Flex ®, etc. We have fulfilled all the qualifications to manufacture a wide range of industrial products for the most severe and demanding services of the Oil, Gas, Refinery, Chemical, Marine, Power and Pipeline industries. 

The more renowned brand, ARITA® is our valve products including Gate Valve, Globe Valve, Check Valve, Ball Valve, Butterfly Valve, Knife Gate Valve, Needle Valve, Strainer and other special valves. Pressure ratings range from 150lb up to 2500lb, and the sizes are NPS1/2 (DN15) up to NPS 60(DN1500) inches. ARITA® is able to produce valves for working temperature from -196℃ to 815℃. These valves are designed and manufactured in accordance with the International standards of ASME, ANSI, API, BS, DIN, JIS etc, capable of serving clients of different requirements.

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