Timed Trench Foam Sanitizer

Model # 976831

The Timed Trench Foam Sanitizer is an automated system for creating rich, thick foam sanitizer at regular, timed intervals, and feeding it to a foam bar located in the trench drain that needs to be sanitized. This venturi foamer uses city water pressure (40 - 125 PSI) to draw and blend chemical concentrate into the water stream and creates a wide range of dilution ratios. Rich, clinging foam is created by injecting compressed air into the solution to greatly expand volume and coverage ability. The water, chemical and air flow can be adjusted "on-the-fly" via needle valves. The system timer is user-programmable to meet the needs of any facility. This system can be used for trench drains from 10' to 48' in length - longer trench lengths will require multiple systems.

Key Features
  • Trench foaming ensures complete sanitation for floor drainage trenches
  • Designed to feed custom built foam bars from 10' - 48' long
  • Creates rich, clinging foam which increases chemical contact time and effectiveness
  • Water, chemical and air flow are adjusted during operation to fine tune settings based on trench length and results
  • Precision metering tips allow for more refined control of the chemical flow rate
  • Adjustable recycling timer controls the run time and delay time
  • Reduces labor costs associated with manually foaming drains
  • Chemical resistant wetted components ensure durability and years of reliable performance
  • Foam bars and hoses are offered separately "by the foot" (specify length)
  • See other cross-contamination control systems in Catalog 6


  • Stainless steel mounting plate
  • 120VAC timer control box
  • Machined polypropylene foamer body
  • Chemical, water, and air flow needle valves
  • 20 color-coded precision metering tips to set dilution ratios
  • 1.5" discharge hose barb
Chemical Concentrate
Supply Line 3/4" I.D.
Temperature up to 160°F
Pressure 40-125 PSI
Flow Variable, 3.8 to 7.8 GPM
Hose/Pipe 1 1/2" Not Included
Compressed Air up to 8 CFM
Optional Foam Bars and Hoses
Hose, Blue, 1 1/2" x 1' (By Foot)# 801300FT
Custom Length Foam Bars Available Upon Inquiry
Alternate Chemical Check Valve - Viton Standard
Check Valve, Chemical, PP(W), 1/4" (EPDM)# 491401
Lafferty Equipment Manufacturing, Inc.
5614 Oak Grove Road
North Little Rock, AR 72118
TFN: 1-800-999-2820

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