List of Brands
RIKEN
High-Quality, Globally Certified Components Supporting Modern Infrastructure
Piping systems are essential for water, gas, sprinkler systems, and industrial facilities. RIKEN’s “Koma” brand products are trusted for their quality, backed by certifications such as JIS, JWWA, and Japan Fire Equipment Inspection Institute. The company offers a broad lineup of pipe fittings to meet the diverse requirements of modern infrastructure and industrial applications.
LA Coupling – Mechanical Fitting with No Threading Required
Introduced in 1957, the LA Coupling is widely used by water and gas utilities, construction companies, and factories. It enables easy connection between steel, PVC, and polyethylene pipes—including combinations of different materials.
Safe and Reliable Installation
LA Couplings connect directly to plain-end pipes, allowing visual confirmation of proper assembly.
Ideal for Repairs and Upgrades
Suitable for aging pipe replacement and for switching from steel to PVC or polyethylene.
Flexible and Shock-Absorbing
Its structure absorbs vibration and thermal expansion, and accommodates slight pipe misalignment.
Long Record of Trust and Variety
With decades of proven performance and a wide product range, LA Couplings have earned strong reliability across water, gas, air, and oil piping systems.