Piping, Valves and Fittings Solutions for Contractors
The Right Pipe, Fittings and Valves. In Stock. Shipped the Same Day.
Whether you're roughing in a commercial mechanical system, replacing aging industrial piping, or managing a fast-moving municipal project, Alsco Industrial is the contractor's source for Schedule 40 and Schedule 80 PVC and CPVC pipe, thermoplastic fittings and valves, solvent cement, and flow control accessories, from the brands you already specify, with same-day fulfillment when the schedule can't wait.
ONE SOURCE. TOTAL CONFIDENCE.
Alsco Industrial has supplied mechanical contractors, plumbing contractors, and industrial construction crews across North America since 1983. We stock the brands contractors specify by name, Spears, Lasco, Westlake, Nibco, GF, Asahi, and Hayward, in Schedule 40, Schedule 80, and specialty configurations from 1/8" through 14", all available from one distributor with same-day shipping on in-stock orders.
PIPE & FITTINGS
The Backbone of Every System, Spec'd Right and Stocked Deep
Nothing slows a piping job faster than fittings that don't show up, pipe that arrives in the wrong schedule, or a last-minute material substitution that sends an inspector sideways. Getting the right PVC and CPVC pipe and fittings, in the right schedule, from a verified manufacturer, to your job site on time is the starting point for everything else.
Wrong Schedule Specified or Delivered, Forcing Field Substitutions
The pain: A crew that shows up expecting Schedule 80 and gets Schedule 40, or vice versa, doesn't just waste a delivery. It creates a decision point on the job site about substitution, re-order lead times, or working with what's there. In pressure-rated systems, that decision has code and liability implications.
The Alsco Advantage: We stock both Schedule 40 and Schedule 80 PVC and CPVC pipe and fittings from Spears, Lasco, and Nibco, clearly organized by schedule, material, and size, so what you order is what arrives. No substitutions, no surprises, and a team that understands the difference between what goes in a light-duty drainage line versus a pressurized industrial process loop.
Relevant Products: PVC Schedule 40 White Fittings • PVC Schedule 40 Gray Fittings • PVC Schedule 80 Fittings • CPVC Schedule 80 Fittings • PVC Pipe • CPVC Pipe
Chasing Down Obscure Fitting Configurations at Multiple Suppliers
The pain: A job rarely needs only elbows and tees. Flanges, reducing bushings, caps, adapters, unions, saddles, and nipples in multiple sizes, from the same pipe schedule and material, are often sourced across two or three suppliers, creating multiple purchase orders, staggered deliveries, and the logistical friction of reconciling what came in against what was ordered.
The Alsco Advantage: Alsco stocks the full configuration range, elbows, tees, couplings, adapters, flanges, caps, reducers, plugs, unions, and nipples, across PVC Schedule 40 white, PVC Schedule 40 gray, PVC Schedule 40 clear, PVC Schedule 80, CPVC Schedule 80, polypropylene, and PVDF, in sizes from 1/8" through 14". One order. One delivery. One invoice.
Relevant Products: PVC Schedule 80 Fittings • CPVC Schedule 80 Fittings • PP Schedule 80 Fittings • PVC Nipples • Metal Nipples • PVC Saddles
Fitting Failures Traced Back to Inconsistent Manufacturing Quality
The pain: Not all PVC and CPVC fittings are built to the same standard. Off-brand or value-line fittings that don't hold to consistent socket dimensions create poor interference fits with pipe, the foundation of a reliable solvent-welded joint. A fitting that passes visual inspection on the bench can fail under pressure in the wall.
The Alsco Advantage: Spears and Lasco fittings are manufactured to strict ASTM standards with earned reputations for dimensional consistency across their product lines. Lasco Schedule 40 and 80 fittings are produced with the dimensional precision that makes interference fit and solvent weld joint integrity predictable, not variable, across thousands of connections on a large job.
Relevant Products: PVC Schedule 40 White Fittings • PVC Schedule 40 Gray Fittings • PVC Schedule 80 Fittings • PVC Schedule 80 Special Reinforced Fittings •CPVC Schedule 80 Fittings
VALVES
Flow Control That Installs Clean, Operates Reliably, and Lasts
Thermoplastic valves in commercial and industrial piping systems need to hold pressure, resist the chemistry of what's flowing through them, and operate reliably for years without corrosion or operator wear. Specifying the right valve type and material for each service point, and having them in stock when the job demands them, is where Alsco delivers.
Metal Valves Corroding in Process and Chemical Service Lines
The pain: Bronze and cast iron valves specified for corrosive water, treated water, pool chemistry, or mild chemical service corrode from the inside, seize, and eventually fail, requiring early replacement in systems designed for a 20-year service life. Corrosion byproducts can also contaminate the fluid stream, particularly in potable water adjacent applications.
The Alsco Advantage: PVC and CPVC thermoplastic ball, butterfly, check, and diaphragm valves from Asahi, Hayward, and Nibco are chemically inert to the full range of treated water, pool chemicals, and mild process fluids, no corrosion, no scaling, no seized operators. Lightweight and easy to install, they go in faster than metal equivalents and deliver reliable service without the corrosion maintenance cycle.
Relevant Products: Ball Valves • Butterfly Valves • Check Valves • Diaphragm Valves
Replacing Failed Valves Requires Cutting and Re-Joining Pipe
The pain: Standard socket-end valves that fail require cutting the pipe on both sides, removing the valve, and re-joining with new fittings, a repair that takes a section of pipe out of service, requires cure time, and in tight mechanical spaces can be far more disruptive than the valve failure itself.
The Alsco Advantage: True-union ball and check valves from allow in-line valve removal with no pipe cutting required, the union nuts unscrew, the valve body comes out, and the replacement goes back in. In commercial mechanical rooms and industrial process lines where space is constrained and downtime is expensive, this design pays for the marginal cost premium at the first repair.
Relevant Products: Ball Valves • Check Valves
No Single Source for Both Standard and Specialty Valve Types
The pain: A commercial mechanical job often requires ball valves for isolation, check valves for backflow prevention, butterfly valves for large-diameter mains, and specialty valves for specific service points, typically sourced from multiple vendors, with the inevitable mismatch of lead times and pricing.
The Alsco Advantage: Alsco stocks the complete valve type matrix, ball, butterfly, diaphragm, check, gate, multiport, manifold, specialty, and actuated, across PVC, CPVC, polypropylene, and PVDF materials, in sizes from 1/4" through large-diameter butterfly configurations. One source covers the valve schedule for most commercial and industrial piping jobs from start to finish.
Relevant Products: Standard Ball Valves • Multiport Ball Valves • Butterfly Valves • Diaphragm Valves • Check Valves • Gate Valves • Actuated Valves
Putting Together a Material List for a Commercial or Industrial Job?
Our team has been supporting contractors on commercial, industrial, and municipal piping projects since 1983. Tell us what you're building, system type, materials, pipe schedule, sizes, and we can help you pull a complete material list from a single source, with same-day fulfillment on everything in stock.
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JOINING MATERIALS & ACCESSORIES
The Job Isn't Done Until Every Joint Is Right
A properly built PVC or CPVC system starts with correct material selection and ends with properly made joints. The solvent cement, primer, sealers, and joining accessories that go into those connections are not commodity items, using the wrong product for the application, the pipe schedule, or the ambient conditions is one of the most common sources of premature joint failure on commercial piping jobs.
Joint Failures Traced Back to Wrong Cement Body Weight or Set Time
The pain: Using a regular-bodied, fast-set cement on a large-diameter Schedule 80 fitting leaves insufficient working time to assemble the joint before the cement begins to set, resulting in a joint that looks complete but hasn't achieved full fusion at the socket. These failures don't show up immediately. They show up during pressure testing, or after the system is in the wall.
The Alsco Advantage: Weld-On's product line spans regular, medium, heavy, and extra-heavy bodied cements for PVC and CPVC, in formulations matched to pipe size, schedule, ambient temperature, and chemical service requirements. Weld-On 724, for example, is specifically formulated for large-diameter CPVC systems in chemical service, heavy-bodied with medium set time to allow proper assembly of interference fits up to 12" diameter. Our team can help identify the correct cement for any application before the first joint is made.
Relevant Products: Solvent Cements, Primer and Accessories
Primer Skipped or Wrong Product Used, Creating Code Compliance Issues
The pain: Inspectors on commercial projects know what a properly primed joint looks like, the purple stain of P-70 primer on the pipe and fitting socket is a visible indicator of correct installation practice. Joints without primer evidence, or joints where the wrong primer was used for the pipe material, create inspection failures that require destructive testing or system re-work to resolve.
The Alsco Advantage: We stock Weld-On P-70 primer in the sizes contractors actually use on the job, not just sample sizes. Formulated specifically for PVC and CPVC pipe and fittings, P-70 softens the joining surfaces before cement application to ensure full fusion depth and meets the requirements of applicable plumbing and mechanical codes. It's a small line item that eliminates a large source of inspection risk.
Relevant Products: Solvent Cements, Primer and Accessories • Sealer and Tape
Rigid System Connections That Crack Under Thermal Expansion and Vibration
The pain: Thermoplastic piping systems expand and contract with temperature changes, and rigid connections at equipment interfaces, building penetrations, and pump discharge points translate that movement directly into stress on fittings and joints. Over time, that stress cracks fittings, opens joints, and creates leak points in systems that were installed correctly.
The Alsco Advantage: PVC flexible couplings and expansion joints installed at thermal expansion points and equipment connections absorb movement and vibration without transmitting stress to the rigid piping system. Available in sizes to match the pipe system, they're a straightforward, low-cost addition to any commercial or industrial piping design that prevents a predictable and avoidable failure mode.
Relevant Products: PVC Flexible Couplings • Expansion Joints • Pipe Clamps • Flexible Tubing
FLOW CONTROL & INSTRUMENTATION
Verify What's Flowing, Before the System Is Commissioned and After
Commercial and industrial piping systems increasingly require documented flow verification, for commissioning reports, for regulatory compliance, for building system performance contracts, and for troubleshooting performance issues after occupancy. The instrumentation that provides that documentation needs to be accurate, durable, and compatible with the thermoplastic piping system it's installed in.
No Flow Verification During System Commissioning
The pain: Completing a commercial mechanical system and handing it off without verified flow data leaves both the contractor and the building owner relying on design assumptions rather than measured performance. When a system underperforms, whether due to undersized pipe, a partially closed valve, or an improperly balanced loop, tracing the cause without flow data means re-testing the entire system rather than isolating the problem.
The Alsco Advantage: GF Signet paddlewheel and Blue-White variable-area flow meters install inline in PVC, CPVC, and thermoplastic piping systems and provide repeatable, accurate flow data at commissioning, and a permanent measurement point for ongoing system verification. With plastic sensor bodies and installation fittings that thread directly into standard thermoplastic pipe tees, they add instrumentation without adding material compatibility concerns.
Relevant Products: Flow Sensors • Flow Meters • Sensor Electronics
Pressure Gauges That Fail or Read Inaccurately in Chemical or Corrosive Service
The pain: Standard Bourdon-tube gauges with brass internals corrode and fail when installed on chemical lines, treated water systems, or even chlorinated pool water systems. A gauge that reads inaccurately, or stops reading entirely, removes a critical diagnostic tool from a pressurized system and creates a safety blind spot.
The Alsco Advantage: We stock glycerin-filled gauges with stainless steel and plastic wetted parts rated for corrosive and chemical service, in pressure ranges matched to commercial and industrial thermoplastic piping systems. Properly specified, a pressure gauge on a chemical or treated water line lasts as long as the system it monitors, not until the first calibration cycle.
Relevant Products: Pressure Gauges • Level Sensors • Instrumentation Accessories
TUBING & FLEXIBLE CONNECTIONS
The Last Few Feet Matter as Much as the Main Run
Equipment connections, panel feeds, sample lines, and instrument connections often rely on flexible tubing rather than rigid pipe, and the tubing material needs to be as carefully specified as the pipe it connects to. The wrong tubing in a chemical or high-pressure application is a maintenance call waiting to happen.
Tubing Failures at Equipment Connections in Chemical or High-Pressure Service
The pain: Clear vinyl tubing installed on chemical feed lines, instrument connections on aggressive process fluids, or high-pressure equipment connections stiffens, crazes, and cracks under conditions it was never designed for, creating leaks at exactly the points where containment matters most.
The Alsco Advantage: We stock chemical-resistant tubing, yarn-reinforced PVC tubing, and Tigerflex hose in configurations matched to pressure, flexibility, and chemical compatibility requirements across commercial and industrial applications. From low-pressure instrument connections to high-pressure equipment feeds and chemical transfer lines.
Relevant Products: Chemical Tubing • Yarn Reinforced Tubing • Tigerflex Hose • Clear PVC Tubing • Polypropylene Tubing • Polyethylene Tubing
WHO WE SERVE
The Contractors We Supply Every Day
From ground-up commercial construction to maintenance and retrofit projects, if it involves thermoplastic piping and fluid systems, we're the supply partner behind it.
- Mechanical Contractors: Commercial and industrial mechanical contractors installing HVAC, process piping, and utility systems who need Schedule 40 and Schedule 80 PVC and CPVC pipe, fittings, and valves delivered reliably against a project timeline.
- Plumbing Contractors: Commercial and industrial plumbing contractors who specify by brand, Spears, Lasco, Nibco, and need consistent product quality, complete fitting configurations, and a distributor who understands the difference between what goes in a DWV system and what goes in a pressurized chemical line.
- Industrial Maintenance Contractors: Maintenance and repair contractors working on existing industrial facilities who need replacement pipe, fittings, valves, and joining materials, often on short notice, to minimize system downtime during planned and unplanned maintenance windows.
- Municipal and Civil Contractors: Contractors on municipal water, wastewater, and infrastructure projects where material certifications, dimensional standards compliance, and delivery reliability are non-negotiable requirements on every purchase order.
- General and EPC Contractors: General contractors and engineering-procurement-construction firms who need a reliable sub-supplier for thermoplastic piping materials across multiple project disciplines, from process piping to HVAC utility runs to site drainage systems.
- Specialty and Process Piping Contractors: Contractors specializing in chemical, water treatment, food processing, or other process industries where material selection, chemical compatibility, and joint integrity require a supply partner with genuine product knowledge, not just a catalog.
Contractor Piping FAQs
Q: What is the difference between Schedule 40 and Schedule 80 PVC and CPVC, and how do I choose?
A: The key difference is wall thickness and pressure rating. Schedule 80 has a thicker wall than Schedule 40 for the same nominal pipe size, giving it a higher pressure rating and greater impact resistance. A 4" Schedule 80 PVC pipe, for example, is rated at 320 PSI versus 220 PSI for Schedule 40 at the same size. Schedule 40 is appropriate for drainage, low-pressure water distribution, and light-duty service. Schedule 80 is specified for pressurized process lines, industrial applications, threaded connections (Schedule 40 walls are too thin to thread safely), and any system where higher pressure or impact resistance is required. Both schedules share the same outside diameter, so they use the same nominal pipe size fittings, but a Schedule 40 fitting should not be installed in a primarily Schedule 80 pressure system.
Q: When should I use CPVC instead of PVC?
A: CPVC handles higher temperatures than standard PVC, up to approximately 200°F versus PVC's 140°F, making it the correct choice for hot water distribution, steam-adjacent service, and industrial process lines where operating temperature exceeds PVC's service range. CPVC also offers broader chemical resistance, particularly to certain caustics and oxidizers that attack PVC. For standard cold water, drainage, and mild chemical service within PVC's temperature range, PVC is typically the more economical specification.
Q: Which Weld-On cement should I use for a large-diameter Schedule 80 CPVC installation?
A: For large-diameter Schedule 80 CPVC in industrial service, Weld-On 724 is the standard specification, heavy-bodied with a medium set time to allow proper assembly of interference fits through 12" diameter, formulated for chemical resistance to acids, caustics, salts, and hypochlorites, and approved for Corzan CPVC piping systems. Weld-On 724 should always be used with P-70 Primer. For smaller-diameter residential or light commercial CPVC, lighter-bodied formulations with faster set times are typically appropriate. Our team can verify the correct Weld-On product for your specific application before your job starts.
Q: Why use true-union valves on a commercial or industrial system?
A: True-union valves can be removed and replaced from a piping system without cutting the pipe, the union nuts on each end unscrew, the valve body comes out, and the replacement goes back in. On a standard socket-end valve, replacement requires cutting the pipe on both sides and installing new fittings with full cure time. In active mechanical rooms and process facilities, the ability to service a valve in-line, without a pipe repair, is a significant maintenance and downtime advantage that justifies the modest price premium over standard end-connection valves.
Q: Do you stock products for chemical-service piping systems, not just standard water service?
A: Yes. Beyond standard Schedule 40 and 80 PVC, we stock CPVC Schedule 80, polypropylene Schedule 80, and PVDF fittings, valves, and pipe for chemical-service applications. We also stock Asahi thermoplastic valves with body material and elastomer options verified for specific chemical services, and Weld-On industrial-grade cements formulated for chemical-resistant applications. If you're working on a system handling chemicals, acids, caustics, or treated water and aren't sure which material to specify, our team can help you verify compatibility before materials are committed.
Q: Do you ship same day, and is there a minimum order?
A: Yes. All in-stock orders placed by 2PM EST, Monday through Friday, no minimums required, ship the same business day from our Atlanta-area warehouse via UPS and FedEx. We ship to contractors across North America, and our deep inventory on pipe, fittings, valves, and joining materials means most commercial piping material lists can be fulfilled from a single order without split shipments or back-order delays.
The Right Materials. On the Truck. When the Job Needs Them.
Browse our full catalog of PVC and CPVC pipe, Schedule 40 and 80 fittings, thermoplastic valves, solvent cement, and flow control accessories, or talk to our team about your next project.
Special Project Inquiry • Contact Sales or Call 888-941-3030