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  3. ハマイ 営業本部
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Industrial Machinery
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ハマイ 営業本部

EstablishmentFebruary 1, 1927
capital39500Ten thousand
number of employees314
addressTokyo/Shinagawa/7-7-7 Nishigotanda, SG Square 2F
phone03-3492-6655
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last updated:Jul 15, 2025
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ハマイ Product Lineup

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91~97 item / All 97 items

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Brass ball valve Brass ball valve
Stainless steel ball valve Stainless steel ball valve
Ball valve for LP gas Ball valve for LP gas
Custom-made product (relief valve) Custom-made product (relief valve)
Automatic ball valve Automatic ball valve
Lockable ball valve Lockable ball valve
Oil-free ball valve Oil-free ball valve
[Materials] Useful Materials [Materials] Useful Materials
<用途別>医療用配管向け <用途別>医療用配管向け
<用途別>純水・水処理装置向け <用途別>純水・水処理装置向け
<用途別>産業用装置 <用途別>産業用装置
<用途別>車両・建設機械 <用途別>車両・建設機械
<用途別>工場配管・プラント向け <用途別>工場配管・プラント向け
<用途別>塗装装置向け <用途別>塗装装置向け
class="retina-image"

Optimal for narrow spaces such as inside devices: Butterfly handle, male-female ball valve.

For those who are having trouble because there is not enough space inside the device to turn the lever. Streamline with a compact ball valve!

Solve the piping issues within the equipment! With a space-saving design that fits into the limited space inside the equipment, we enhance the design flexibility of the device. Products with male-female connections can also reduce piping materials, leading to even more space savings! 【Features of Hamai's Butterfly Handle Products】 ● Even in areas where there is no room to turn a lever handle, a butterfly handle can be installed without taking up space. ● Products with male-female connections are also available in the lineup. ● Brass products are also included in the lineup. *For more details, please refer to the related links or feel free to contact us.

  • valve

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【Short delivery time・High quality】Oil-free ball valve

High-quality oil-free ball valves delivered to you in a short time!

For those struggling with long lead times for oil-free products. Get high-quality oil-free ball valves right now. We quickly deliver the piping materials necessary for production sites to support stable operation of your equipment. 【Features of Hamai's Oil-Free Products】 ● Cleaning before assembly with no residual grease. ● Stock held through lot production. ● Can accommodate those using in even cleaner environments (re-cleaning of finished products, clean rooms, etc.) ● Available in brass and stainless steel products. ● Butterfly handles for space-saving options are also available. *For more details, please refer to the related links or feel free to contact us.

  • valve

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Long-standing track record in various industrial equipment and automotive devices - Hamai Ball Valve

Overwhelming high performance to meet various needs! Specifications and design changes are possible.

Our company offers various custom manufacturing options for "ball valves." We have numerous adoption records with major industrial equipment and vehicle manufacturers. Due to our reliable quality, we have received high evaluations across various industries for many years. We can also accommodate difficult environments and conditions such as high temperature, low temperature, and high pressure. If you cannot find a product that meets your requirements and are using an expensive over-spec product as a substitute, please feel free to consult us. 【Features】 ■ Short delivery time and high quality: Domestic production allows for high-quality oil-free products to be delivered in a short time. ■ Custom orders: Hamai's custom products are fully tailored to your specifications. ■ Adaptability to difficult environments: We can handle challenging environments and conditions. *For more details, please download the PDF or feel free to contact us.

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Stainless steel ball valve with key lock function lockout

Perfect for lockout of semiconductor manufacturing equipment and facility piping!

Equipped with a key lock function using a padlock (sold separately). This model is oil-free and complies with the RoHS directive (10 substances). It allows for secure locking in both fully open and fully closed states, preventing accidents caused by unintended contact with the handle or vibrations, and is effective in preventing equipment and piping failures as well as enhancing safety measures. Parts are degreased and cleaned using a hydrocarbon-based cleaning machine, and after drying, they are assembled without using any oils such as grease by hand, and shipped in individual packaging. Additionally, due to the full bore equivalent specification where the inner diameter of the connecting piping is almost the same as the valve bore diameter, fluid resistance is low when fully open, and pressure loss is minimized. Moreover, there are numerous achievements in custom-made (specification changes) products based on this model.

  • Piping Materials

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Custom-made valve for special orders and completely new designs.

We offer custom valve manufacturing with various optional features centered around ball valves.

At Hamai, we are capable of manufacturing custom-made valves that cater to various industrial machinery, equipment, and piping, centered around ball valves. We can accommodate not only simple parts replacements but also modifications to the main body shape and combinations of different standards, as well as fully customized designs to meet unique specifications. Special specifications such as heat resistance, pressure resistance, corrosion resistance, chemical resistance, oil-free design, and low environmental impact are also available. ■ Examples of Requests - Change in handle shape (lever handle/knob handle). - Change in handle opening direction (clockwise/counterclockwise). - Change in O-ring material (NBR/FPM, etc.). - Incorporation of different standard screws (Rc screws/G screws/NPT screws, etc.). - Modification of shape to fit in narrow spaces. - Compatibility with special fluids. - Integration of multiple ball valves used together. - Special oil-free design. - Addition of a locking function to prevent accidental operation, etc.

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Full bore equivalent type stainless steel small pneumatic automatic ball valve

Space-saving and disassemblable full-bore equivalent model

A small pneumatic automatic valve made of stainless steel, equivalent to a large flow full bore. Due to its flange connection, it is possible to clean internal components such as balls by disassembling it. Additionally, the aluminum actuator equipped with a rack and pinion mechanism is high-torque, lightweight, and compact, capable of rotating in 90° increments. It is ideal for piping in narrow spaces and for installation in devices that require miniaturization. Furthermore, there are numerous achievements in custom-made (specification changes) products based on this model.

  • Piping Materials
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Piping component "Ball Valve" [made of brass or stainless steel, for LP gas, etc.]

A lineup of ball valves made of brass, stainless steel, and for LP gas!

The piping component "ball valve" includes a lineup of "brass ball valves" such as the BBS series, which emphasizes versatility and cost-effectiveness, and "stainless steel ball valves" like the BSS series, tailored to the needs of the chemical and food industries. It also features "LP gas ball valves," which are ideal for LP gas and gas taps, and "pneumatic automatic ball valves" such as the LAS series, designed to enhance labor efficiency. 【Product Lineup】 ■ Brass Ball Valves ■ Stainless Steel Ball Valves ■ LP Gas Ball Valves ■ Custom Ball Valves ■ Pneumatic Automatic Ball Valves ■ Motorized Automatic Ball Valves, etc. *For more details, please request materials or view the PDF data available for download.

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