20 GPM High Flow Level Master™ System

Model # 989101

The 20 GPM High Flow Level Master™ is a water driven chemical proportioner that will automatically refill a customer-supplied tank with ready-to-use chemical solution. When the solution in the tank drops below a pre-set level, the float valve triggers air-activated solenoids to start the flow of water. Using city water pressure (35 - 125 PSI), this venturi system draws and blends chemical concentrate into the 21.2 GPM @ 40 PSI water stream to create an accurately diluted solution. The system cycles continuously and a secondary fail-safe float prevents overfilling.

Key Features
  • Automatically maintains a pre-set level of ready-to-use chemical solution in a customer-supplied tank
  • Refills at 21.2 GPM @ 40 PSI to provide chemical for a central chemical feed system
  • Dual magnetic float valve design includes a primary valve to regulate normal operation and a secondary fail-safe valve to shut off the system if the primary float valve malfunctions
  • Unsinkable solid polypropylene floats suspended by rigid "push rods" ensure smooth operation and prevent the float valves from sticking in the open position
  • Dilution ratio controlled with precision metering tips
  • Chemical resistant wetted components ensure years of outstanding performance with minimal maintenance
  • Industrial-strength design holds up in tough environments
  • Available with a lower flow rate (#989100)
  • Available with a tank (#989108)
  • See all of our Level Master™ configurations and other Lafferty chemical management systems in Catalog 9
  • Stainless steel Level Master mounting bracket
  • 2 magnetic float valves (primary and fail-safe) with solid polypropylene floats suspended by rigid CPVC push rods
  • Air inlet ball valve
  • 2 stainless steel Satellite Mixing Station mounting plates
  • 2 air-activated water solenoids
  • 2 machined polypropylene injector bodies
  • 2 sets of 20 color-coded precision metering tips
Chemical Concentrate
Temperature up to 160°F
Pressure 35-125 PSI
Flow 21.2 GPM @ 40 PSI
Supply Line 1" Minimum
Compressed Air Up to 80 PSI
Dilution Ratio Range 2,423:1 to 10:1 @ 40 PSI
For Stronger Ratios or Viscous Chemicals
1/2" Chemical Pick-up Assembly (Viton)# 491404-A
1/2" Chemical Pick-up Assembly (EPDM)# 491403-A
Drum & Tote Stick Lengths, Styles & Seal Materials
Drum Stick, 33" (Viton or EPDM)# 491643 / 491643-E
Drum Stick, 48" (Viton or EPDM)# 491648 / 491648-E
Drum Stick, 54" (Viton or EPDM)# 491645 / 491645-E
Tote Stick, 33" (Viton or EPDM)# 491653 / 491653-E
Tote Stick, 48" (Viton or EPDM)# 491654 / 491654-E
Tote Stick, 54" (Viton or EPDM)# 491656 / 491656-E
Stainless Steel Central Pump System
1" AODD Pump (Santoprene)# 919060SS
Teflon Upgrade# 710943
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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