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.

We at State Plumbing Supply have been doing business with W4 for approximately 30 years. I can confirm their excellent customer & tech services. Highly recommend.


Earl Mitchell, State Plumbing

W4 is able to provide valuable product information that you cannot find on the manufacturer’s website. Their product knowledge is the result of dealing with every facet of the products that they sell. From the engineer that designed the product to the end user of the product – knowledge that can only gained through experience.


Ross F Adams, Sedona West Co., Inc.

Brian and his employees at W4 are always there to help when we are in need for a quick and reliable solution. Having top of the line customer service, while supplying top of the line products makes it an easy choice to go with W4 over other suppliers. We have been longtime customers and are extremely grateful for the services provided by them.


Austin Hall, Temecula Valley Pipe & Supply

W4 is an excellent local resource for your fitting and repair solutions, they are highly knowledgeable and always offer alternative solutions to assist our loyal clients to ensure a smooth running job from start to finish in a timely manner. They offer quality products that are widely accepted that provide our clients with a reliable connection.


Martin Michaelson, Western Water Works

W4 has always been great to work with and their customer service is spot on. It’s always easy to reach someone and get inquires answered promptly. I appreciate their well stocked inventory and their ability to “build” a part when needed.


Tony Schneller, Koppl Pipeline Services, Inc.


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