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  • SaniBest Grinder installed cut away view
  • SaniBest Grinder
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Product Description

SaniFlo SANIBEST Macerator Pump

Possible connections

Toilet Sink
Shower Bathtub
Washing Machine (indirect connection) Laundry Sink

Vertical and horizontal discharges: 18 Vertical ft  150 Horizontal ft


The SaniFlo SaniBest is a system used to install a complete bathroom up to 18 feet below the sewer line, or even up to 150 feet away from a soil stack.  The SaniFlo SaniBest can handle the effluent from a toilet, sink, bathtub, shower and washing machine (indirect connection).

While most of our pump range are macerators, the SaniFlo SaniBest incorporates an actual grinder system.  The SaniFlo SaniBest is ideal for situations where you do not control the use of it (ie. rental unit, offices, warehouses, etc).  The SaniFlo SaniBest is designed to deal with sanitary articles that may have been flushed down the toilet; such articles may consist of sanitary napkins, q-tips, dental floss, etc.

Note: In commercial installations, plumbing codes require an elongated bowl to be installed with this system.

The SaniFlo SaniBest is simplicity itself to install; there are just four connections.

  • The SaniFlo macerator/grinder pump is connected to the spigot of a horizontal rear discharge toilet
  • The SaniFlo toilet tank is connected to the water supply
  • The SaniFlo macerator/grinder pump is connected to the small diameter discharge pipe work
  • The SaniFlo macerator/grinder pump is connected to the electrical supply

The inside of the SaniFlo SaniBest is comprised of a pressure chamber, which starts and stops the unit, and the motor, which drives the stainless steel cutting blade and the pump.  When the flush is activated, the water flowing into the SaniFlo SaniBest activates a micro switch in the pressure chamber, which in turn starts the motor.  The motor is sealed for life in an oil filled enclosure.  A common spindle/shaft drives the impeller and the blades.  The moving parts therefore are kept to an absolute minimum.  Water and organic waste matter, enter the chamber and are reduced to slurry as the blades rotate at 3600 RPM.  The reduced solids are picked up at the bottom and the impeller mounted beneath the motor ejects the waste. 

The SaniFlo SaniBest unit pumps the effluent upward to 18 feet and/or 150 feet horizontally (with gravity fall).  Once the water level in the container goes down, the micro switch deactivates.  A normal operating cycle for the Sanibest takes about 7-9 seconds depending upon the discharge pipe run configuration.

In addition, the SaniFlo SaniBest will also discharge gray water from a variety of other sanitary fixtures such as: a sink, a bath/shower, a urinal and even a washing machine (indirect connection).  When adding a bathtub/shower, a base will have to be constructed.  This base should be made out of a 2” x 6” (minimum) or 2”x 8” (recommended) on edge, to allow for the installation of a P-trap and the required 1/4” per foot gravity flow towards the pump unit.

The wastewater from other sanitary fixtures is discharged into the SaniFlo SaniBest via two 1½-inch inlets on either side of the housing.  The discharge elbow on top of the SaniFlo SaniBest can be rotated 360 degrees depending on the discharge installation.  A non-return valve (included in assembly) prevents back flow into the unit.

This SaniFlo SaniBest unit has been designed with a vent connection on the lid.  All plumbing codes require connection to a vent system.  Please note that the vent system should be a two-way air vent.  The use of mechanical vents, air admittance valves or similar devices are not permitted as these are considered one-way air vent systems. 

The SaniFlo SaniBest unit must be connected to our rear discharge toilet.  This system uses 1.6 USG (6 liters) of water per flush.  It is highly recommended for the grinder to be connected to a Ground Fault Interrupter (GFI) circuit. 

The SaniFlo SaniBest has been certified to American and Canadian Standards.  Macerating standard; US: CSA Certified & IAPMO (UPC) listed - ASME A112.3.4, CA: Macerating Standard CSA B45.9. 

Warranty Information

Saniflo offers a 2-year warranty for the pumps and a 1-year warranty for the toilet bowl and tank. The warranty starts from the date of purchase.

The warranty is voided when any foreign objects are found in the macerating unit. Pouring automobile anti-freeze, solvents paintings, acids, alkaloids, plastic bags, metal, plastic material, wood or anything that could halt, damage or corrode the unit, voids warranty. The motor is filled with oil and sealed for life at the factory; draining the oil out of the motor voids warranty as well.

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