The 2020 edition of the Son Goku Drain Catalog has been uploaded.

Integrating the brim and drainage tube with our unique patented technology "fusion welding"! Achieving high strength and maximum drainage capacity!

--Product Features-- ● The patented technology "fusion welding" integrates the flange and drainage pipe, eliminating issues such as the drainage pipe falling off and unevenness at the weld seam. ● A gentle slope from the flange to the drainage outlet and a radius at the drainage outlet ensure smooth drainage. ● Made of 99.9% pure lead. ● A wide range of sizes to accommodate various structural dimensions (φ30/φ40/φ50/φ60/φ70/φ80/φ90/φ100/φ120/φ130/φ150/φ200 for each piping).

• Waterproof tape, adhesive, drain, protective panel

No step between the floor and the drain! Achieving maximum drainage effectiveness!

--Product Features-- ● The bending part of the brim (floor surface) does not create a step to the drainage outlet, allowing for smooth and maximum drainage capacity. ● Made of 99.9% pure lead. ● The connection between the main body and the PVC hose is secured with both adhesive and a hoop band for double fastening. ● A wide range of sizes to accommodate all types of structures (φ30 / φ40 / φ50 / φ60 / φ70 / φ80 / φ90 / φ100 / φ110 / φ130 / φ140 / φ150 / φ200 for various piping).

• Waterproof tape, adhesive, drain, protective panel

Solve the problem of deformation of the water distribution pipe during construction with patented technology!

--Product Features-- ● Developed a unique technology that integrates a 1.4mm thick rigid PVC pipe and a 0.8mm thick flexible PVC in the vertical drainage pipe section. This solves the problem of deformation of the PVC drain pipe during installation. Additionally, there is no risk of the rigid PVC pipe falling out or deforming after installation. ● A gentle slope from the flange to the drainage outlet and the inclusion of a radius at the drainage outlet ensure smooth drainage. ● Excellent compatibility with various PVC sheets. ● A wide range of sizes available (φ50 / φ60 / φ75 (compatible with φ70 to φ80) / φ100 (compatible with φ90) for various piping applications).

• Waterproof tape, adhesive, drain, protective panel

Fits the rise of the body. No step at the drain with the floor surface!

--Product Features-- ● A bend angle that fits the rise of the structure. ● Smooth drainage is achieved as there is no step at the drainage outlet with the floor surface. ● Excellent compatibility with various PVC sheets. ● A wide range of sizes available (φ50 / φ60 / φ75 *compatible with φ70 to φ80 / φ100 *compatible with φ90) for various piping applications.

• Waterproof tape, adhesive, drain, protective panel

A vertical and horizontal compatible drain that accommodates all types of PVC installation.

--Product Features-- ● Ensures maximum drainage capacity whether used vertically or horizontally. ● Excellent compatibility with various PVC sheets. ● A wide range of sizes available (φ50 / φ60 / φ75 (compatible with φ70 to φ80) / φ100 (compatible with 90)) for various piping applications.

• Waterproof tape, adhesive, drain, protective panel

No screws needed! Easy installation by simply inserting the cylindrical cap!

● Adopts a round brim and cylindrical cap ● No screws needed! Easy installation by simply inserting the cylindrical cap ● Made of SUS304, excellent weather resistance and corrosion resistance ● Includes 3 anchor plugs

• Waterproof tape, adhesive, drain, protective panel

Easy to install, featuring a screw cap!

●Square-shaped brim, cylindrical cap ●Made of SUS304 with excellent weather resistance and corrosion resistance ●Includes 4 anchor plugs

• Waterproof tape, adhesive, drain, protective panel

Highly versatile vacuum cylinder!

● This is a vacuum tube that combines functionality and practicality. ● It can be widely used in rooftop waterproofing work.

• Waterproof tape, adhesive, drain, protective panel

Double type compatible with the thickness of all insulation materials.

● It is a vacuum tube that combines functionality and practicality. ● It can be widely used in rooftop waterproofing work.

• Waterproof tape, adhesive, drain, protective panel

Ideal vent pipe for PVC waterproofing work.

● The flange part uses PVC material. ● The vent shaft also uses PVC material, allowing for easy installation by simply covering it with a cap. ● The PVC flange has excellent compatibility with PVC sheets during installation.

• Waterproof tape, adhesive, drain, protective panel

Can be used under outdoor units and for various purposes.

It can be used in various places with space constraints, such as narrow spaces like under the outdoor unit.

• Waterproof tape, adhesive, drain, protective panel

The total height is 464 mm, compatible with rooftop greening.

● It is a vacuum tube that combines functionality and practicality. ● It is suitable for rooftop greening waterproofing work, etc.

• Waterproof tape, adhesive, drain, protective panel

Ideal for special installation locations such as wall edges!

●It can be used in various places where there are constraints on installation space. ●Unique asymmetric design unlike any other.

• Waterproof tape, adhesive, drain, protective panel

Just plug it in for easy installation! Available in two colors: gray and black!

● An excellent product that prevents the intrusion of garbage and impurities into the drainage pipe! ● Applicable drain sizes are Φ70 to Φ140 ● Available in two colors: black and gray

• Waterproof tape, adhesive, drain, protective panel

Just plug it in for easy installation! Available in two colors: gray and black!

● An excellent product that prevents the intrusion of garbage and impurities into the drainage pipe! ● Applicable drain sizes are Φ40 to Φ80 ● Available in two colors: black and gray

• Waterproof tape, adhesive, drain, protective panel

Just plug it in for easy installation! Available in two colors: gray and black!

● An excellent product that prevents the intrusion of garbage and impurities into the drainage pipe! ● Applicable drain sizes are Φ40 to Φ60 ● Available in two colors: black and gray

• Waterproof tape, adhesive, drain, protective panel

You can easily install it by bending the spring and inserting it into the drain pipe! It comes in two colors: gray and black!

● An excellent product that prevents the intrusion of garbage and impurities into the drainage pipe! ● Applicable drain sizes are Φ70 to Φ140 ● Available in two colors: black and gray

• Waterproof tape, adhesive, drain, protective panel

You can easily install it just by bending the spring and inserting it into the drain pipe! It comes in two colors: gray and black!

● An excellent product that prevents the intrusion of garbage and impurities into the drainage pipe! ● Applicable drain sizes are Φ40 to Φ70 ● Available in two colors: black and gray

• Waterproof tape, adhesive, drain, protective panel

It can be easily installed just by inserting it into the drainpipe! The L-shaped extra large is made of all stainless steel.

● An excellent product that prevents the intrusion of garbage and impurities into the drainage pipe! ● Applicable drain size is Φ200.

• Waterproof tape, adhesive, drain, protective panel

Easy installation by simply inserting into the drainpipe.

●Prevents debris from entering the drainage pipe. ●Easy installation by simply inserting the SUS spring into the drainage pipe. ●Both the strainer body and the spring are made of all SUS304. ●Compatible with drainage pipes from Φ30 to Φ60.

• Waterproof tape, adhesive, drain, protective panel

Easy installation by simply inserting into the drainpipe.

●Prevents debris from entering the drainage pipe. ●Easy installation by simply inserting the SUS spring into the drainage pipe. ●Both the strainer body and the spring are made of all SUS304. ●Compatible with drainage pipes from Φ30 to Φ60.

• Waterproof tape, adhesive, drain, protective panel

Easy installation by simply inserting into the drainage pipe.

●Prevents debris from entering the drainage pipe. ●Easy installation by simply inserting the SUS spring into the drainage pipe. ●Both the strainer body and spring are made of all SUS304. ●Compatible with drainage pipes from Φ30 to Φ60.

• Waterproof tape, adhesive, drain, protective panel

Remove sweat and dirt with the power of enzymes! Can be easily used without water!

Sweat, dirty hair, and body from the site are cleansed with enzyme bubbles, removing dirt and odors beautifully. You can achieve a refreshing feeling as if you took a shower, even without water.

• others

FRP waterproofing work available.

● The main body of the drain is made of FRP, which is excellent in water resistance, weather resistance, and flame retardancy. ● An all-stainless steel strainer cap is included.

• Waterproofing work

FRP waterproofing work available.

●The main body of the drain is made of FRP, which is excellent in water resistance, weather resistance, and flame retardancy. ●An all-stainless steel strainer cap is included.

• Waterproofing work

We create custom drains, starting with copper drains.

● We will create drains tailored to the customer's needs in terms of materials, shapes, etc. ● Copper drains are available for both vertical and horizontal types, accommodating piping from φ30 to φ200.

• Waterproof tape, adhesive, drain, protective panel

Drain selection gauge specifically for Sun Wukong drain products

By using the Pitta Mon, you can choose a Son Goku drain that perfectly fits the drainage pipe you are installing. ● Benefits - By installing a drain of the appropriate diameter, you can ensure maximum drainage capacity. - It eliminates the hassle of modifying or replacing drains on-site due to size differences. - We offer the Pitta Mon (small) that can measure drainage pipe diameters from φ30 to φ100, and the Pitta Mon (large) that can measure diameters from φ110 to φ150!

• Waterproof tape, adhesive, drain, protective panel

Kort Valuta Inc. (Head Office: Shibuya, Tokyo; CEO: Hideki Shibata) is pleased to announce that we will hold our next recruitment event, “Kort Valuta Night,” on November 26, 2025. This recurring event offers an opportunity for potential candidates to casually learn about our company culture and team atmosphere before applying. By lowering the barrier to entry and providing authentic insights from current employees, the event helps participants gain a more concrete sense of what it’s like to work at Kort Valuta. Since the event’s launch, approximately ten attendees have gone on to join the company in a range of roles — including marketing, customer support, and backend engineering.

Kort Valuta Inc. (Headquarters: Shibuya-ku, Tokyo; President & CEO: Hideki Shibata; hereinafter “the Company”) announces that it has renewed the user interface (UI) of TwooCa, the Company’s digital employee ID with Visa payment functionality.

Kort Valuta Inc. (Headquarters: Shibuya-ku, Tokyo; CEO: Hideki Shibata) is pleased to announcethat NBS Logisol Co., Ltd. (Headquarters: Hita City, Oita Prefecture; CEO: Itsuro Kono) has introduced “TwooCa,”a Visa-enabled digital employee ID card, for approximately 1,100 employees.

An article about the resin-based lightweight formwork system "PERI DUO" has been published in the "Construction News" (November 7, 2025)! "PERI DUO" is a new system formwork made of resin that can be used for walls. It is made from a newly developed material called "Politec," which is high-strength and lightweight. With fewer components, it is easy to handle. It allows for increased reuse and is an environmentally friendly lightweight formwork that is flexible on the construction site! 【DUO Product Features】 ■ New system formwork made of resin ■ High strength and lightweight ■ Fewer components and easy to handle ■ 100% recyclable *For more details about this product, please feel free to contact us. PERI Japan Co., Ltd.

We are pleased to announce that the "Kuji Regional Renewable Energy Circulation Project" in Kuji City, Iwate Prefecture, has received an Excellence Award at the 2025 Solar Week Awards organized by the Japan Photovoltaic Energy Association. The "Solar Week Awards" recognize initiatives and projects that contribute to the community, are desired by the community, and serve as models for the expansion of solar power generation. On July 24, 2025, NGK Insulators, Ltd. issued a press release titled "Start of Operation of Solar Power Generation Equipment at Hybrid Storage Facility with Sharing Function - Ceremony Held at Solar Power Plant Operated by Iwate Bank Group Company." This demonstration of the hybrid storage facility with sharing function (StorageHub) is being conducted by manorda Iwate, a regional trading company fully funded by Iwate Bank, with development led by NR-Power Lab Co., Ltd. NR-Power Lab Co., Ltd. is leading the design, development, and system operation of the StorageHub in this project. We will continue to collaborate with our partner companies to engage in technological development and the creation of advanced services aimed at realizing a sustainable local community.