San Marcos' Specialty Plumbing Experts Since Day One

When The Big Box
Store Lets You Down,
We Come Through.

Valley Industrial Specialties carries the hard-to-find valves, antique fixtures, and specialty plumbing parts that no warehouse store stocks — backed by staff who actually know their stuff.

Visit Our Store (760) 752-4691
4.7 Stars on Google
Wheelchair Accessible
Cards Accepted
In-Store Pickup
4.7★
Google Rating
1000s
Specialty Parts In-Stock
100%
Service Guaranteed
Local
San Marcos Experts
The VIS Difference

Not Your Average Supply Store.

Every time you walk through our door, you're working with someone who has solved a problem exactly like yours — and knows the difference between what you think you need and what will actually fix it.

Experts, Not Clerks

Our staff are trained specialists. They've seen the weird stuff, the obscure stuff, and the "I've-been-everywhere" stuff. They don't guess — they know.

Hard-to-Find Parts

Historic valve? Antique claw-foot tub fitting? Obscure faucet cartridge? We carry what big-box stores discontinued years ago — and still have answers when they don't.

Save Money, Skip the Guessing

We tell you exactly what you need — nothing more. We've saved homeowners from replacing entire fixture sets when a single part was all that was needed.

Real People, Real Service

No warehouse kiosks. No endless aisles with no help in sight. Just knowledgeable, approachable specialists who take your problem personally.

Specialty plumbing parts and pipe fittings at Valley Industrial Specialties
★ 4.7
Google Rated
San Marcos, CA
Service
Guaranteed
Our Philosophy

The Shop That Treats Your Problem Like Its Own

There's a reason homeowners from Rancho Santa Fe, Carlsbad, and Escondido drive past every big-box store to reach us. Those places have inventory. We have answers.

When you walk in carrying a corroded valve stem from a 1940s bathroom, our team doesn't shrug and point to aisle 22. They pick it up, study it, and start asking the right questions until they find what you need — or find a solution that works better.

No-pressure expertise. We'll tell you if you don't need the expensive part. That's just how we operate.
Historic home specialists. If your fixtures predate the internet, you're in exactly the right place.
Trusted by contractors and homeowners alike. From DIY repairs to professional installs, we supply both with equal care.
Onsite services available. Beyond parts — we offer onsite services when the situation calls for it.
Our Inventory

What We Carry

From the everyday to the one-of-a-kind — our inventory spans the full spectrum of specialty plumbing supply, with an emphasis on exactly what the other guys don't stock.

Industrial valves and pipe fittings

Valves & Fittings

Ball valves, gate valves, check valves, pressure regulators, and the hard-to-identify specialty valves that stump everyone else. We find what you're looking for.

Faucet parts and repair kits

Faucet Parts & Repair Kits

Cartridges, stems, seats, washers, packing, O-rings, and complete rebuild kits for faucet brands both modern and vintage. Bring the old part in — we'll match it.

Antique claw-foot tub and vintage bathroom fixtures

Antique & Vintage Fixtures

Claw-foot tub hardware, period-correct faucets, and components for historic homes that no one else can source. We've rescued more than a few irreplaceable bathroom originals.

Industrial pipe and plumbing supply warehouse

Industrial Plumbing Supply

Commercial-grade pipe, fittings, flanges, and industrial flow control components for contractors, facilities managers, and professional tradespeople throughout North County SD.

Specialty bathroom fixtures and hardware

Specialty Fixtures & Hardware

Unique trim kits, specialty shower valves, mixing valves, and premium hardware that elevate your plumbing beyond the ordinary — for projects where aesthetics meet performance.

Professional plumber providing onsite service

Onsite Services

Sometimes the problem requires more than a part. Our onsite service brings our same standard of expertise and care directly to your home or job site — backed by our service guarantee.

Real Customers. Real Results.

What People Are Saying

★★★★★
4.7 on Google
"

Hard valve to identify but the specialist did not give up. Saved me replacing the complete faucet setup.

Dan W.
San Marcos, CA
★★★★★
"

Larry was so helpful. Very professional and highly recommend buying your plumbing parts here.

Victor S.
North County, CA
★★★★★
"

Went in completely lost... They told me what I actually needed and explained it to me.

Tianna B.
Carlsbad, CA
★★★★★
"

Larry and John were so thorough... They went beyond the norm... not unlike the 'Car Guys' who troubleshoot your particular repair.

Adrian B.
Escondido, CA
★★★★★
"

We own a historic house and looked everywhere for the parts we needed... managed to provide a solution that worked!

Linda K.
Rancho Santa Fe, CA
★★★★★
"

Had exactly what I needed for the antique claw foot tub I had saved.

Dawn K.
Vista, CA
★★★★★

Read all our reviews on Google — search "Valley Industrial Specialties San Marcos"

Come See Us

Find Us in San Marcos

We're easy to reach from Carlsbad, Vista, Escondido, Oceanside, and all of North County San Diego.

Store Information

Address
320 S Pacific St, Suite A
San Marcos, CA 92078
Hours
Mon – Fri8:00 AM – 5:00 PM
SaturdayClosed
SundayClosed
In-Store Pickup
Service Guarantee
Cards Accepted
Accessible
Call Now — (760) 752-4691
Get In Touch

Have a Part in Mind?
Ask Our Experts.

Can't identify it? Not sure if it can be fixed? Describe your problem and our team will point you in the right direction — even before you come in.

Fastest Response
(760) 752-4691