Water Works

W4 has one of the most extensive inventory of couplings, valves, fittings, tapping sleeves and clamps anywhere with fast 24/7 customer support.


W4 has a complete line of fittings that meets nearly every irrigation requirement that you might ever need. See why we have become indispensable to the industry.


If you have pipe fitting requirements in the manufacturing and Industrial sectors, W4 probably has all the products in stock that you might need.


W4 stocks one of the most extensive inventory of pipe fittings for the plumbing industry. Just as important is our 24/7 customer service.

Oil & Gas

Need those critical couplings, valves and fittings fast? You’ve come to the right place. W4 has an extensive inventory as well as 24/7 customer service.


Click below to shop our entire warehouse of pipe fittings and accessories.

All on-line.

Need help on a custom application?

Can’t find the exact product configuration for a specific application?

W4 has the ability to assemble products to fit your exact requirements. Just click the button below and tell us what you need.

Westcoast Water
Works Warehouse
172 Business Center Dr
Corona, CA 92878

7:30 a.m. to 5:00 p.m.
Tel: 866.234.9494
Fax: 951.739.9520