ドレンネジ List of Products and Services

Even with water or oil leaking, and under pressure, it stops leaks perfectly! Leak repairs can be done without draining the contents of the pipes, even while the equipment is in operation!

• Drainage and ventilation equipment

This catalog features flexible joints for drainage steel pipes handled by Doren Neji Co., Ltd. It introduces various products including the TM-II type joint with cushion packing, TM joints, and the Lock Ace, which exhibits strong resistance to disconnection. Additionally, it includes a list of manufactured items, flexible saddles for drainage steel pipes, and the features of Doren Neji joints, making it a useful reference when considering implementation. [Contents] ■ List of manufactured items ■ MD Joint ■ TM-II type joint ■ TM Joint ■ Lock Ace, etc. *For more details, please refer to the PDF document or feel free to contact us.

• Fittings

We handle branch saddles that are also used in non-water-spraying snow melting systems. The leaching performance complies with JWWA B 117 and is available in either hot-dip galvanized or epoxy powder coating. Generally, they are used for industrial and agricultural water as well as in factory piping. Please feel free to contact us if you have any requests. 【Specifications】 ■ Operating conditions: 0.75 MPa or less ■ Maximum operating temperature: 60°C or less ■ Outlet thread: Pipe taper thread (JIS B 2301) ■ Pressure resistance: 1.72 MPa (17.5 kgf/m²), etc. *For more details, please download the PDF or feel free to contact us.

• Piping and insulation

"RD fittings" are high-performance fittings that excel in heat resistance and chemical resistance. Thanks to high-quality nylon coating on both the inner and outer surfaces achieved through a flow immersion method, we simultaneously realize cost reduction and improved heat and chemical resistance. The thick (over 300μm) "pinhole-free" nylon coating suppresses blistering (peeling of the coating) caused by high-temperature water. Please use it for drainage pipes where sulfur corrosion and high-temperature wastewater are concerns. 【Features】 ■ Nylon coating on both inner and outer surfaces ■ Black paint on both inner and outer surfaces *For more details, please download the PDF or feel free to contact us.

• Fittings