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  1. Home
  2. Industrial Machinery
  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 List of Products and Services

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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
<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

工場等で使用されるボールバルブの紹介です。 誤開閉を防止するロック機能付きボールバルブが使用されています。 誤接触による流体の漏れが、労災や工場の生産停止に繋がる箇所で、 特にお勧めです。

2-Way Lockout Ball Valve TSS-140 Type

This is a recommended safety product for those who need lockout devices like padlocks or feel that existing safety measures are cumbersome. [Free safety materials available]

A full bore ball valve with a built-in spring that can be used regardless of orientation, equipped with a locking mechanism. It is also possible to lock it out using a padlock. ◆【Product Features】 - Can be locked in both closed and open positions. - The lock can be easily released with simple operation. - Even if the handle is accidentally bumped, it locks securely to prevent unintended opening and closing. - We produce in lots and keep stock, so we can deliver immediately. (*1) - The locking mechanism is integrated with the valve, allowing for space-saving use compared to external locking mechanisms. - Lockout is possible by passing a padlock through it. - Since it has a built-in spring, the locking mechanism can be used regardless of orientation. - There are also oil-free versions and versions without handle coating available. We have some in stock, so please feel free to consult us. (*1) Please consult us if you have a bulk order. There may be cases where stock is insufficient and delivery may take some time.

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Safety Measures - Forged Ball Valve with Locking Knob Handle Type, Made of Brass

Lockable knob handle type ball valve with a high-strength forged body due to its integrated structure. Prevents accidental opening and closing. <RoHS compliant / Made in Japan>

Equipped with a unique locking mechanism that can securely fix the valve in fully open or fully closed positions with just one touch. This prevents accidents such as the handle unintentionally opening or closing due to contact with people or objects, or vibrations. The knob handle design is ideal for narrow piping. Produced in our domestic factory using Hamai's latest valve technology. ■【Features】 - Equipped with a handle locking function that securely locks in fully open/fully closed positions - Knob handle that is optimal for narrow piping - High-strength integrated body made through hot forging - Excellent corrosion resistance and durability with PTFE - Anti-protrusion structure with the stem assembled from the inside of the body ■【Product Quality Recognized by Professionals】 Hamai's ball valves are top-class high-performance ball valves with a proven track record of mass supply (OEM) to various industrial equipment and machine tools, primarily for major manufacturers. They are adopted as genuine parts by various companies, meeting all needs for ball valves with the highest product quality. ★【Custom Orders / Customization Available】 For more details, please contact [Tokyo Headquarters] TEL 03-3492-6655 <Receptionist / Second Sales>.

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Safety Measures - Forged Ball Valve with Lock, Brass Ball Valve

A high-strength forged body with an integrated structure, featuring a lockable brass ball valve. It effectively serves as a safety measure, preventing accidental opening and closing. <Made in Japan>

Equipped with a unique locking mechanism that can fix the valve in fully open or fully closed positions with a single touch. This prevents accidents such as unintended opening and closing of the handle due to contact with people or objects, or vibrations. The handle is compact, making it ideal for narrow piping. - Features a handle lock function that ensures reliable locking in fully open/fully closed positions - Lever handle with excellent operability - High-strength integrated body made through hot forging - Made with PTFE for excellent corrosion resistance and durability ■【Product Quality Recognized by Professionals】 Hamai's ball valves are top-class high-performance ball valves with a proven track record of mass supply (OEM) to various industrial equipment and machine tools, primarily for major manufacturers. They are adopted as genuine parts by various companies, meeting all needs for ball valves with the highest product quality. ★【Custom Orders / Customization Available】 For more details, please contact [Tokyo Headquarters] TEL 03-3492-6655 <Receptionist / Second Sales>.

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【Safety Measures - Forged Ball Valve】 Oil-Free Key Lock Function Full Bore Equivalent

Adopts a high-strength forged body, with a key lock for a padlock (sold separately) for complete safety measures. It is a full bore equivalent model compliant with no oil/RoHS 2.0. <Made in Japan>

A full bore equivalent ball valve with a key lock function using a padlock (sold separately), based on the TSS-01 model. It is oil-free and compliant with the RoHS directive (10 substances). It securely locks in both fully open and fully closed states, making it effective for safety measures in semiconductor manufacturing equipment and more. Produced in our domestic factory using Hamai's latest valve technology. ■【Features】 - Ensures reliable lockout regardless of the piping installation direction - The locking mechanism is integrated with the valve, saving space compared to retrofitting methods - Quick document processing is possible due to domestic production - Maintains cleanliness for an extended period as there is no handle coating - High flow rate and full bore equivalent ■【Product Quality Recognized by Professionals】 Hamai's ball valves are top-class high-performance ball valves with a proven track record of mass supply (OEM) to various industrial equipment and machine tools, primarily among major manufacturers. They are adopted as genuine parts by various companies, responding to all needs for ball valves with the highest product quality. ★【Custom Orders / Customization Available】 For more details, please contact [Tokyo Headquarters] TEL 03-3492-6655 <Receptionist / Second Sales>.

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Safety measures - Forged ball valve with key lock function, equivalent to full bore.

Adopts a high-strength forged body, allowing for key locking with a padlock (sold separately). This is an economical model equivalent to a full bore, effective for safety measures. <Made in Japan>

An economy model equivalent to full bore, based on the FBT-101 type, with an added key lock function using a padlock (sold separately). It allows for reliable locking in both fully open and fully closed states, making it effective for safety measures in semiconductor manufacturing equipment and more. Produced in our domestic factory using Hamai's latest valve technology. ■【Features】 - Key lock function with a padlock (sold separately) enables reliable locking in fully open and fully closed positions - Large flow, full bore equivalent specifications - Utilizes PTFE sheets with excellent corrosion resistance and durability - Achieves a wide range of usage conditions with double fluororubber O-rings ■【Product Quality Recognized by Professionals】 Hamai's ball valves have a proven track record of mass supply (OEM) to various industrial equipment and machine tools, primarily for major manufacturers. They are top-class high-performance ball valves in the industry. They are adopted as genuine parts by various companies, responding to all needs for ball valves with the highest product quality. ★【Custom Orders / Customization Available】 For more details, please contact [Tokyo Headquarters] TEL 03-3492-6655 <Receptionist / Second Sales>.

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[Free Offer] Solve dissatisfaction with overseas products! A collection of successful case studies on improvements to domestic valves.

Solve delays, damage, and operational errors in overseas-made valves with domestic products! We are currently offering three successful case studies that balance operational efficiency and safety for free!

Are you facing challenges such as "it takes time to respond to substance content investigations," "managing 4M changes is difficult," "there are many instances of damage and leaks," and "there is a risk of accidents due to operational errors"? With Hamai's domestically manufactured ball valves, we achieve quick responses and stable quality through integrated production from procurement to assembly. In fact, many major manufacturers have seen improvements in operations and accident prevention. ▼ Case Studies - Construction machinery manufacturer: Contributed to a significant reduction in damage issues and zero accidents. - Oil plant manufacturer: Eliminated labor accident risks by preventing operational errors. - Semiconductor manufacturing equipment manufacturer: Submitted investigation documents within a week, greatly reducing the burden of quality control. For more details, please check the "Download Catalog" link below.

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【For fire prevention of oil and similar substances!】Screw-in connection anti-static ball valve

Optimal for flammable fluids such as oil piping! A ball valve with static electricity prevention for comprehensive fire safety measures.

Strengthen on-site fire prevention with electrostatic discharge-treated piping components! Are you overlooking any threaded connections? 【Is an anti-static valve necessary?】 When using a ball valve, static electricity is generated due to the friction between the fluid and the metal ball valve. In fluids with low conductivity (such as oil), static electricity accumulates inside the ball. If there is no mechanism to discharge the static electricity from the ball to the outside of the valve, the accumulated static electricity can create sparks, igniting flammable fluids and leading to a fire. Measures are necessary when flowing low-conductivity and flammable fluids (e.g., petroleum). 【Features of Hamai's anti-static valve】 ● Rare threaded ball valve with anti-static function ● Easy-to-operate lever handle ● Handle shape can be changed according to customer requests * We do not guarantee against fire-related issues such as leaks of flammable fluids. Please confirm the compliance of the fluid used with applicable regulations on your own. * For more details, please refer to the related links or feel free to contact us.

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