A testament to cutting-edge technology, proven reliability, and ecological innovation-on an ever-expanding global stage.

The worldwide recognition of the MS brand stands as clear evidence of its uncompromising quality. Our comprehensive product lineup reflects decades of accumulated expertise
and outstanding performance.

Today, the MS brand embraces a new vision: ecology.
Innovative technologies are driving energy efficiency and promoting environmentally responsible solutions.

We remain committed to shaping the model of a forward-thinking company-one that reduces environmental impact and contributes meaningfully to society.

Miyairi Valve Mfg. is a 100% Japan-based manufacturer specializing in the development of valves for a wide variety of applications and configurations.

Our current lineup includes more than 100 models, and we also provide tailored solutions through custom designs and special orders to meet diverse client needs.