Pressure Filters
STF-100 Pressure Filter

The Sim/Tech STF-100 Pressure Filter is extremely effective in providing protection for all pressurized distribution systems.  If you are looking to protect a pressurized system from suspended solids, the STF-100 series filter can do the job. 

Placing an effluent filter just before entering the forced main of the pressurized septic system is a simple solution. The pressure filter installs by simply threading onto the discharge port of any effluent pump, thereby, filtering out contaminants before they enter the distribution system or drain field.

The SIM/TECH STF-100 effluent filter has been designed to assure that the small holes in the distribution piping remain unclogged. The filter system is unique to the industry, engineered to provide maximum protection for your sanitary pressure system.

Ease of Use: The pressure filter assembly is installed and serviced in a matter of minutes, making this product unique to the industry. The STF-100 pressure filter easily threads onto the discharge port of any effluent pump. Also available is a uniquely designed, fully adjustable pressure switch that indicates when the effluent filter needs servicing. The pressure switch can be wired with its own alarm or connected in with the high level alarm. On the occasion when a filter does need cleaning, it can be removed easily, washed clean of debris and contaminants then reinstalled in the pressure filter assembly. The entire process takes only minutes.

The STF-100 effluent filter, with its unique design and mounting location, allows the filtering screen to be scrubbed while in operation, providing maximum maintenance intervals with unmatched performance capabilities. The filter screen is a type 347 stainless steel with .062 diameter holes. It is 3 inches in diameter and 18 inches long with a 69.52 square inch open area. This large 41% open area allows the filter to pass 83.8 gallons per minute at 1 psi. With features like these even a partially clogged screen will keep the system well protected and working properly. This performance product assures quality effluent with lower TSS levels, keeping your pressurized distribution system functioning at 100% efficiency.  Optional filter socks are available for use with the screen to filter down to 600, 190, or 100 microns (.024”, .007”, .004”).

The STF-100 pressure filter has been designed as an effluent filtering device for pressurized distribution systems. The STF-100 pressure filter protects any pressurized distribution system including Sanitary Mound Systems, Sand Filters, Spray Irrigation Systems, Drip Systems, Pressurized Chambered Systems, Commercial Pressurized Systems or any Pump Septic System, Wastewater Treatment Systems or Residential Pressurized Systems. The STF-100 effluent filter should be used as a safe guard component in all pressurized septic systems. 

Download the STF-100 Pressure Filter Flyer
Download the STF-100 Pressure Filter Commercial Manifold Flyer



STF-100A4 4" Pressure Filter

The new high volume pressure filter is for systems that have horizontal space issues.
Previously, to accommodate higher flows, multiple STF-100 filters could be put together into a manifold.  Now Sim/Tech offers a new alternative, the STF-100A4.  The purpose of the 100A4 is to use the vertical space of the pump chamber.  The filter is rated at about 250 gallons per minute at 2 psi.  It measures about 7-1/2" at its widest point and is 42-1/2" tall before you add your desired length of tail piece piping and threaded coupler to attach it to your pump.  The inlets and outlets are 4".  The filter screen inside is composed of 2 of the standard screens stacked on top of each other.  The filtering area is therefore twice that of one of the standard screens.  Now, even if you lack the space to put in multiple 2" filters, there is the STF-100A4 to handle your commercial size flow requirements.


Click here for flyer on the STF-100A4










All in One A1 Vault


The A1-Vault is a multi-faceted unit for the filtration of water in either pump or gravity flow systems.  The A-1 can be used for many different applications including, but not limited to:  onsite wastewater, cisterns, pet kennels, and car washes.  Below are some of the features of the All-in-One A1 vault.

  • Cleaning of the A1 is done without having to remove and disassemble it
  • Cleaning can be performed while the A1 is in operation.
  • The filtration size of the A1 is easily changed.  (standard unit filters to less than 1/16”)
  • Other Sim/Tech filtration technology such as the bristle filter (STF-110 series) and pressure filter (STF-100 series) can be easily incorporated
  • External filtration allows debris to slough off into tank and not accumulate inside of the A1
  • The base height of the A1 can be easily adjusted with the addition of standard 4” sewer & drain or SDR35 pipe or it can be hung in the tank
  • Low water shut-off switch available for pump shutdown
  • Filters can be added up to any height

Click here for the flyer on the All-in-One A1 Vault