manhole connector leaking in Marion INKnowing why a manhole connector leaks is just as important as knowing which manhole connector is right for your job. So why do they leak?

In our experience, the majority of all reported gasket and connector field problems are due to contractor installation issues. Don’t take offense contractors, we’re not saying that you aren’t capable of doing a good job. We think you’re amazing.

But we also know that 50% of the time the initial problem reported is different after visiting the job site.

Things Contractors May Miss On Installation

In no certain order, these are things we have seen quite often that could cause improper installation of our manhole connectors, which in turn could cause leaks.

  • Firm, stable, uniform bedding
  • Unauthorized repairs
  • Improper placement of butyl sealant or not equalizing rubber gasket
  • Incorrect stacking
  • Not understanding manhole vacuum test standards
  • Carelessly inserting pipe into manhole connector
  • Chipped, broken or cracked openings on manhole

Proper Manhole Connector Installation

A manhole connector might look more complicated because of the steel take up clamps, but it’s actually a fairly easy process.

  1. Clean pipe section at least 3 feet from insertion end.
  2. Center pipe in opening until pipe breaks the plane of manhole. On tight boot throat openings, lube can be used.
  3. Attach take-up clamp or clamps. If one clamp and boot with two grooves, clamp goes on first groove.
  4. Tighten clamps to 60 inch pounds.
  5. Adjust pipe to line and grade.
  6. Use proper bedding and backfill materials and techniques so that pipe deflection and deformation is minimized. More on bedding & backfill later.
  7. Here is a more detailed video on how to install our PSX: Direct Drive.

Proper Field Gasket Installation

So how do you install a gasket? What are the critical steps in ensuring a better seal each and every time?

  1. Clean step and bell, check for any chips or imperfections.
  2. Stretch gasket over spigot and seat squared area against the step. Gasket print towards you.
  3. Equalize gasket; pinch, pull, snap technique or metal object underneath making 1-1/2 revolutions.
  4. After equalizing, ensure rear of gasket is seated against step.
  5. Heavily lubricate bell and entrance slope (lubricating gasket is optional on profile gasket).
  6. Align pipe sections squarely and bring home slowly.
04Nov 2019

Microtunneling is becoming one of the most common forms of underground construction to help mitigate disruption of the area where the project is taking place. And this year Press-Seal’s customer, Northern Concrete Pipe, was able to assist in achieving a new U.S. record for a single bore of pipe that stretches nearly ¾ of a […]

14Oct 2019

Boot connectors come in a wide range of sizes and types for different applications, but one thing that remains the same are take-up clamps. These take-up clamps are used to secure the boot connector to the pipe using a 304 stainless steel clamp. In today’s episode of Press-Seal U, territory manager Sean Fowler shows us […]

07Oct 2019

If you had to call the fire department and they ran out of water, what do you think the odds are of them saving your property or the lives of you and your family? In many rural settings across the States and Canada, these properties are at a much higher risk for a greater loss […]

09Sep 2019

A rubber pipe gasket is used for sealing underground collection systems and structures including the most common ones: Round Pipe Arch and Elliptical Pipes Box Culverts Jacking and Micro tunneling When considering which pipe gasket is right for your type of structure or application, you’ll find many varieties to choose from. So let’s start off […]

04Sep 2019

A Cast-A-Seal 603 is a very popular cast-in boot connector for manholes or straight wall structures requiring PVC pipe. And on today’s episode, territory manager Dan Brundage shows us how easy it is to install on a polyethylene mandrel. What kind of mandrel do I use? As seen in the video a mandrel provided by […]

28Aug 2019

When installing a manhole boot such as the PSX: Direct Drive or PSX: Nylo Drive, we have an installation wrench that is certified and calibrated to ensure the best possible seal in a structure. On today’s episode of Press-Seal U, a long-time veteran of Press-Seal, Mark Emmons, joins us to give a quick overview of […]

07Aug 2019

Do you need butyl sealant tape for a manhole, septic tank, box culvert or maybe even a concrete pipe? Do you know the two styles Press-Seal offers and their differences? If you’re a contractor out in the field, we also offer a Wrap Pak that gives you specific lengths to make it easier to install. […]

01Aug 2019

Compression boot connectors are one of the simplest pipe-to-manhole connectors found in the market. Press-Seal offers two different options – the Kwik Seal and Econoseal. On today’s episode of Press-Seal-U, The Gasket University, territory manager Sean Fowler walks us through the differences in the two compression connectors and how each has advantages for precast plants […]

16Jul 2019

The 402 cast-in connector is a simple pipe-to-manhole connector manufactured for pipe diameters of 1.25” to 6” (32 – 150mm) PVC. The gasket meets or exceeds a wide variety of ASTM’s including C923, C1227 and C1644. Additionally, the gasket comes in a closed or open face design to help with future construction of the collection […]

10Jul 2019

On today’s episode of Press-Seal-U, Dan Skinner joins us for an installation demonstration on the flexible pipe to manhole connector. The CAS 12-08 is an integrally cast-in to the structure and simulates the look of the PSX: Direct Drive for connecting pipes to manholes. The entire assembly of the CAS 12-08 uses four simple pieces […]