Mini-Prime Battery Operated Trap Primers

MP-500-12V, MPB-500-12V

Designed for use with one to four floor drains. Distribution units purchased separately. The trap primer valve make up line to floor drain is recommended to be a minimum of 12” off the finished floor before a 90˚ elbow can be installed. The furthest recommended distance of makeup line is approximately 20’ to floor drain. Trap primer make up line must have a continuous slope to the floor drain (consult local code requirements).

  • 1/2" Male NPT
  • Includes Integral Stainelss Steel Screen
  • US Patent #5,797,419
  • Canadian Patent # 2,174,578


Cabinet: NEMA 1, UL 50, 12"x12"x4" - 16 guage steel w/screw on cover ANSI 61 gray polyester powder paint
Recycle TImer Box: Pre-set timer opens once for 6 seconds every 24 hours. Dimensions - 7 5/8" L x 4 5/8" W x 2 3/8" D
Inlet: 1/2" NPT Male
Outlet: 1/2" NPT Female. ANSI/ASME BI.20.1
Distribution Units: DU Series Drain Outlet: 5/8" and 1/2" Compression Fittings SAEJ512 - 1/2" Female NPT ANSI/ASME B1.20.1
Soldered Joints: 95-5 Lead Free Containing Lead Not in Excess of 0.2%
Electrical Component: .2 Amps Circuit Breaker, Test Switch, Timer, Solenoid Valve marked as UL Listed. Electrical Assembly Listed per UL #;73
Temperature/Pressure : 32° F-125°, 20 PSI-150 PSI. Minimum 2 oz. water at 20 PSI per drain served.
Access Door: D-814PC, D-814SS, F-814PC, F-814SS
NOTE: The priming valve must have a minimum elevation of 12 inches (305mm) above the finished floor.
PART NUMBER Voltage Dimensions
MP-500-12V 12 7 5/8" L x 4 5/8" W x 2 3/8" D
MPB-500-12V 12 12" W x 12" H x 4" D
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