Domestic production, in-house design, high-pressure gas certification.
The cast steel material has a casting mark with the letters "NS" inside a diamond-shaped frame.
We will respond to all needs on both the creation and repair sides as a 'reliable valve shop'!
Since our establishment, we have consistently been involved in the manufacturing of valves, growing alongside the development of Japan's petrochemical industry. From the beginning, we have engaged in contract manufacturing while also conducting design and development in areas such as large-diameter valves, high-temperature and high-pressure valves, jacketed valves, plug and cock valves, and tilting check valves. We have continued to produce our own products with a commitment to domestic materials. Additionally, we have accumulated significant achievements in the overhaul of various types of valves. 【Examples of Our Products】 ■ Shut-off valves (wedge gate valves 40A to 1500A) ■ Globe valves ■ Check valves (chack valves) ■ Plug and cock valves (such as grease seal plugs) ■ Tilting check valves (one-piece and two-piece types) ■ Butterfly stop valves ■ Other special items - Please feel free to consult us about additional or special specifications, such as pressure seal types, jacket types, counterweight-equipped, angle types, Y types, alumina-treated products, titanium materials, and more. * In the case of low-flow valves, we can also perform fluid analysis to verify valve opening degrees and reflect this in the design. We accept contract manufacturing of a wide variety of valves from customers in various fields.
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basic information
【Certification, etc.】 - High-pressure gas equipment testing and manufacturing certified business Ministerial certified tester Certification number MA・B-35519 【 We manufacture certified valves 】 - ISO9001:2015 【Main Equipment】 ■Machinery - CNC lathe - CNC vertical lathe (OM Manufacturing Co., Neoα-16Ex and others introduced) - Horizontal machining center - Vertical lathe (up to about 5 tons) - Facing lathe, etc. ■Welding Equipment - MIG, MAG, TIG, etc. - Stellite gas overlay welding equipment ■Inspection Equipment - Pressure testing press (for hydraulic and airtight testing) - Booster pump - Plunger pump - PT, MT, hardness testers, etc. - Various skill licenses for inspections ■Lifting Equipment - 10t crane, etc. - Forklift Surface treatment, heat treatment, etc. are carried out by partner companies. *Please feel free to contact us.
Price information
We sincerely apologize, but compared to overseas products, it is somewhat more expensive. We hope you can consider the costs from a practical perspective, whether to invest in various operational maintenance after the valve introduction or to ensure long-term peace of mind.
Delivery Time
※Products made from cast steel materials take about three months to arrange. For items that have materials available, we can discuss the timeline (approximately one month?). We also have a certain stock of standard products.
Applications/Examples of results
Industrial valves: ■Refineries ■Petrochemical plants ■Steel mills ■Various power plants ■Waste treatment facilities ■Oil storage bases ■Seabed, etc. Please feel free to contact us.
Detailed information
catalog（1）
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Company information
Manufacturing, repairing, and creating valves Nakamura Valve Manufacturing Co., Ltd. has been consistently engaged in valve manufacturing since its establishment in 1947 (Showa 22), walking alongside the development of Japan's petrochemical industry. We are approaching our 80th anniversary. We sincerely thank you for your warm support. Through the technology accumulated over many years of valve manufacturing, we contribute to the maintenance and development of the industrial infrastructure as a behind-the-scenes supporter. About 80% of our sales come from our own products, while the rest consists of assisting other companies in the same industry and valve maintenance. While many manufacturers are switching to overseas materials, we have continued to prioritize domestic materials for our products since our founding, particularly selecting high-quality cast steel materials for pressure-resistant components to ensure stable quality. Even if you require special materials that are difficult to obtain domestically, we can procure the requested materials in consultation with our customers. We manufacture and sell on a made-to-order basis, but we also have a small stock of materials for products that receive frequent inquiries. Please contact us if you need something urgently. If you have any concerns regarding valves, please feel free to consult with us.
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