PVC (Polyvinyl Chloride) fittings are essential components in plumbing, irrigation, and many DIY projects. Whether you're a seasoned professional or a weekend warrior, understanding PVC fittings can be challenging. Here, we answer the top 10 most common questions about PVC fittings to help you navigate your next project with confidence.
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Schedule 40 and Schedule 80 refer to the thickness of the PVC pipe walls. Schedule 40 PVC fittings have thinner walls and are generally used for residential plumbing and irrigation systems where lower pressure is involved. Schedule 80 PVC fittings have thicker walls, making them suitable for industrial applications with higher pressure requirements. Visually, Schedule 80 fittings are often darker (grey) and more robust than the white Schedule 40 fittings.
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PVC fittings are sized based on the nominal pipe size (NPS), which is the inside diameter of the pipe. To determine the correct size, measure the outside diameter of the pipe and match it to the corresponding fitting size. It's important to note that PVC pipe sizes are not directly related to the actual diameter of the pipe, so always refer to a PVC sizing chart for accurate measurements.
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Standard PVC fittings are not suitable for hot water applications because they can warp or degrade under high temperatures. For hot water, CPVC (Chlorinated Polyvinyl Chloride) fittings should be used, as they are designed to withstand higher temperatures, up to 200°F (93°C), compared to the 140°F (60°C) maximum for PVC.
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To properly glue PVC fittings, follow these steps:
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PVC couplings are used to connect two pieces of pipe in a permanent, glued connection. Once installed, couplings cannot be easily removed. PVC unions, on the other hand, allow for easy disconnection and reconnection of pipes. Unions have a threaded design with an O-ring that provides a leak-proof seal, making them ideal for applications where maintenance or replacement may be needed.
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Yes, PVC fittings can be buried underground, but they must be properly rated for the application. For potable water and irrigation, Schedule 40 or Schedule 80 PVC fittings are commonly used. When burying PVC, ensure it is installed below the frost line to prevent freezing and cracking. Additionally, consider using a protective sleeve or conduit to guard against damage from shifting soil or roots.
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To repair a leak in a PVC fitting:
For small cracks, a PVC repair kit or epoxy putty can be used as a temporary fix.
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The maximum pressure that PVC fittings can handle depends on the Schedule rating. Schedule 40 PVC fittings are generally rated for up to 450 psi at room temperature, while Schedule 80 fittings can handle up to 630 psi. It's important to note that the pressure rating decreases as the temperature increases, so always refer to the manufacturer's specifications for accurate information.
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PVC is a widely used material due to its durability and cost-effectiveness. However, there are environmental concerns related to its production and disposal. The manufacturing process involves the use of chlorine, which can release harmful chemicals. Additionally, PVC is not biodegradable, so it can contribute to plastic pollution if not properly recycled. Some PVC products are now made with eco-friendly materials or additives to reduce environmental impact.
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No, PVC fittings should not be used for compressed air or gas applications. PVC is not designed to withstand the high pressures and temperature variations associated with air and gas systems, and it can shatter under pressure, leading to potential safety hazards. For air or gas applications, metal or specialized plastic fittings designed for those purposes should be used.
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Understanding the ins and outs of PVC fittings can help ensure your projects are successful and long-lasting. By addressing these common questions, you're better equipped to select the right materials and avoid common pitfalls. Whether you're working on a plumbing system, irrigation, or a custom DIY project, these tips and insights will guide you in the right direction.
All “quick-connect” fittings are alike, right? Not necessarily!
While both A-type and B-type fittings are used to join together two pieces of pipe or hose, there are noticeable differences between these two types of fittings. At Wolf Creek, we sell both A-type (Anfor) and B-type fittings in larger, 10 to 12-inch diameter sizes. We also offer true Genuine Bauer fittings in sizes 8-inches and less. Bauer is the original ‘B-type,’ and there’s simply no substitute for the premium brand-name quality and reliability!
So, do you know what types of fittings you have on hand? Test your knowledge with these questions:
If you answered #1, you have an A-type fitting! If you picked #2, you have a B-type, or “Bauer-style” fitting. But is it really a Bauer brand-name fitting, or not? Keep asking these questions to find out!
Genuine Bauer fittings have a distinctive squared nose, which keeps the lever locked in the closed position. On the other hand, generic B-type fittings use rivets and a locking pin. Over time, these rivet holes can become loose and result in unreliable connections. Meanwhile, Bauer fittings can be used over and over again without becoming “sloppy” and loosening.
GenuineBauer fittings are so reliable due to the quality put into every detail of their function. Unlike Bauer-style connectors, real Bauer fittings have welded-on straps that hold the lever arms to the ring. The straps do not stretch or wear out, providing a leak-proof connection time after time.
This last one is pretty straightforward. If your fitting doesn’t have “BAUER” stamped clearly on the handle, you’re dealing with a non-brand name Bauer-style fitting!
Every project is different, and requires different equipment and fittings. Don’t worry — Wolf Creek has a variety of pipe and hose fittings to choose from!
When you need larger diameter fittings to move large volumes of water, we have 10-inch and 12-inch fittings in both A-type and B-type options. For jobs requiring smaller fittings of 8 inches or less, we highly recommend Genuine Bauer, the industry’s best fitting.
Not sure what you have on hand, or think you have incompatible fittings? We can help with that! Our adapter fittings allow you to connect different fittings — such as A-type to B-type — in those tricky installations. Whether you need a cam-loc, a Victaulic, or an A-type-to-B-type adapter, we have the fitting you need and we can get it to you quickly.
P.S. If you have many fittings, and even multiple types of pipe or hose couplers on one jobsite, our Warhammer multi-closing tool is a must. The Warhammer can be used to open and close both A-type and B-type fittings, making it faster, safer, and easier for your team to connect and disconnect quick-couplers — even in the dark. Our customers appreciate the Warhammer’s ability to help prevent the risk of back, shoulder, finger, and hand injuries on their job sites.
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