When it comes to connecting lateral pipes to mainline sewers or stormwater drains, few solutions rival the efficiency, reliability, and ease of installation of Inserta Tees. This innovative product is the gold standard in PVC pipe saddle technology, delivering watertight connections without the need for glues, epoxies, or specialized equipment. 

Whether you’re a contractor looking for a smarter installation method or a municipal engineer focused on long-term reliability, in the following blog we’ll take a closer look at what makes them a go-to choice.

Characteristics & Compatibility

Inserta Tee is a three-piece fitting that makes it quick and easy to connect a lateral pipe to a mainline pipe – without leaks. It’s made up of a PVC hub, a rubber gasket, and a stainless steel band. Together, these parts form a strong compression seal that meets (and often exceeds) watertight standards, including ASTM F-1336 and D3212.

Here are some of the key features you should know about: 

• Watertight seal: Resists infiltration and exfiltration, even under pressure.

• Versatile fit: Compatible with a wide range of pipe materials and sizes.

• Easy installation: Requires only a hole saw, drill, and torque wrench.

• No adhesives: Mechanical fit eliminates drying or curing time.
• Durable materials: UV-resistant PVC and stainless steel components.

What is the pressure rating for an Inserta tee?

Inserta Tee is engineered for gravity flow applications, so it’s not typically rated for high-pressure water systems. That said, it is leak-proof up to 10.8 PSI (pounds per square inch), which corresponds to a 25-foot head of water. This rating far exceeds the needs of stormwater and sanitary sewer applications, where gravity—not pressure—is the driving force.

Can you use an Inserta Tee in a clay pipe?

Yes—but with a caveat. Inserta Tee is designed to work with many types of pipe, including clay, PVC, concrete, ductile iron, and corrugated HDPE. However, the installer must use the correct Inserta Tee model and rubber gasket sizing specific to the outer diameter of the clay pipe.

Because clay pipe sizes can vary slightly depending on manufacturer and age, it’s vital to confirm the OD (outer diameter) before selecting your Inserta Tee. When properly matched, Inserta Tee can create a watertight connection in clay pipe just as reliably as it does in PVC or concrete.

Can you use a saddle tee on a CPVC pipe?

While you can use some saddle tees on CPVC pipe, there are a few important things to keep in mind:

• Check the manufacturer’s specs: Not all saddle tees are made for CPVC. Make sure the one you’re using is specifically listed as compatible with your pipe’s size and schedule.
• Know your CPVC: CPVC comes in different grades, so double-check that the tee is suited to the exact type you’re working with.
• Follow the instructions: Installation matters. Use the right hole size and apply the correct torque if your saddle tee has bolts or clamps—don’t just eyeball it.
• Review local plumbing codes: Some areas may have restrictions or special requirements when it comes to using saddle tees on CPVC. Always verify before installing.
• Check pressure and temperature ratings: Make sure the saddle tee can handle the same pressure and temperature ranges as your CPVC system.

What is the most common tee size?

There isn’t just one “most common” tee size that fits every industry. In residential plumbing, smaller sizes like ½” and ¾” are typical, while commercial and industrial projects often require a broader range. When it comes to Inserta Tee, sizes range from 2″ to 30″ for lateral connections, with even larger options available for mainlines.

That said, 6 inches is by far one of the most widely used Inserta Tee sizes. It hits the sweet spot for many applications, making it a go-to choice for:

• Residential and commercial sewer laterals
• Stormwater drainage systems
• Municipal infrastructure tie-ins

Who provides Inserta Tees near me?

You’re in the right place! Since 1958, Blair Supply Corp. has been the trusted source for top-quality water main materials and utility equipment. From Rochester to job sites nationwide, we deliver exactly what you need, and we do it fast. Contact us today and make your next project easier!