Detailed Breakdown on the Proper Installation of an Amalgam Separator on a Dry-Vacuum Pump  Step 2- Hose

Detailed Breakdown on the Proper Installation of an Amalgam Separator on a Dry-Vacuum Pump Step 2- Hose

Thank you for following our Blog Series on the in-depth look at the proper installation of a M.A.R.S LibertyBOSS on a Dry-Vacuum system.

Step 1- Location Part 1 of this Blog Series spoke about where in the mechanical room you will locate the inlet pipe from chairs and determine the appropriate approach to an installation based on its location.

Step 1– Location Part 2 discussed where amalgam separators belong in the evacuation line system, common mistakes made by Non-C.A.S.S. Service Technicians and space-saving installation tips.

Today’s blog will explain which hose to use for the installation of your M.A.R.S LibertyBOSS.

Why Hose for Your Dry-Vacuum and Amalgam Separator?

You may be wondering why we would use a hose for the installation an amalgam separator over a hard pipe. There are two main reasons;

1) As it was mentioned in the first blog of this series, flexible hose installation allows for gradual bends, which will put less strain on the suction than using 90-degree elbows. Flexible hose usually allows for tighter installations and easier maintenance than a hard pipe set up.

Flexable hose vs Hard pipe (1)-min

2) Some major cities across North America require a plumber to complete an installation if it is hard piped. In many cases, a standard Service Technician can get around this rule by using a hose for an amalgam separator installation.

The Right Hose

Selecting the right hose for any mechanical room job is extremely important, as the wrong hose could result in failure. The process in which to choose the correct hose falls into a couple of categories.


The general rule used when selecting hose material, if it is used in a pool application, it will withstand the requirements of a dental mechanical room application. M.A.R.S typically uses a Flexible PVC or “Spa Hose” for LibertyBOSS installations. The Flexible PVC hose is usually accessible at Pool Supply stores, Lowes and some Plumber Supply stores. There are different variations of the Flexible PVC like the “Blue Water” hose from a brand called Tigerflex. These type of hose are flexible for tight installations, cost-effective and they can easily withstand the suction for a dry-vacuum pump.

Hose 1


The above-mentioned hose all have built-in ribbing that prevents collapse. There are different types of internal support, ranging from a nylon braided to a metal helix. A flexible hose helix is a support that is a coil that corkscrews through the hose to add support. The ideal support for a hose is a PVC helix as it is lightweight, easy to work with and less expensive than a metal helix.

One of the worst hoses that can be used on a suction pump is a nylon braided hose, as it is not made to withstand suction. These hoses will collapse rather quickly under suction, which will cause a strain on your pump.

hose 2


Selecting the correct diameter of your evacuation lines for your Dental Practices is important and can get very complicated. , as it directly relates to the efficiency of your suction. When building a new practice, it is a good idea to decide on a suction pump first, then consult with the manufacturer on the requirements needed based on the size of your Practice.

The diameter of the main trunk line in a Dental Practice can range from 2” to ¾” based on the number of chairs, HVE and the distance each operatory is from the mechanical room.

Installation Hose

When choosing the right diameter hose for the installation of an amalgam separator on a dry-vacuum system, M.A.R.S recommends not using a hose smaller than 1 ¼” and no larger than 2” hose.

Step 3- Fittings

Once you have selected your hose material and diameter, you will have to choose the appropriate fittings to complete your installation. The next blog in this Blog Series will be sharing tips on how to choose the right fittings for your amalgam separator installation on a Dry-Vacuum system.

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