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PPP (PR-500) | Prime-rite Primer Automatic Trap Primer Valve

by PPP
Original price $52.88 - Original price $52.88
Original price
$52.88
$52.88 - $52.88
Current price $52.88

PPP PR-500 is a pressure drop-activated trap primer valve that primes up to 2 floor drains using DU-U or DU-4 units.

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PPP PR-500 Prime-Rite Trap Primer Valve: Automatic Protection for Floor Drain Traps

The PPP PR-500 Prime-Rite Trap Primer Valve is an innovative trap priming system that automatically maintains water seals in floor drain traps. Designed and manufactured by Precision Plumbing Products in Portland, Oregon, this patented system requires no adjustment and can prime up to two floor drain traps using PPP's specialized water distribution system. The PR-500 delivers reliable performance for commercial, industrial, and institutional plumbing systems.

Performance Benefits

Feature Specification Benefit
Operating Range 20-80 PSIG (138-552 kPa) ✓ Versatile Installation Options
Activation Pressure 10 PSIG (70 kPa) Drop ✓ Reliable Automatic Operation
Distribution Capacity Up to 2 Floor Drains ✓ Cost-Effective Solution
Construction C69300 ECO Brass ✓ Durable, Corrosion-Resistant Design

How It Works: Innovative Trap Priming Technology

Stage 1: Pressure Drop Activation

Function: The valve automatically activates when it senses a pressure drop of 10 PSIG (70 kPa) in the water line

Benefit: No manual operation or electrical components required, ensuring reliable performance with minimal maintenance

Stage 2: Metered Water Distribution

Function: Delivers a precise amount of water through the patented distribution system to floor drain traps

Benefit: Maintains proper water seal in traps to prevent sewer gas infiltration and odors

Key Features

  • No Adjustment Required: Install and forget design requires no calibration or regular adjustment
  • Premium Materials: Constructed from C69300 ECO corrosion-resistant brass with EPDM E70 O-rings and stainless steel mesh screen
  • No Moving Parts to Fail: Contains no springs, diaphragms, or plastic parts that could wear out or break
  • Lead-Free Certified: NSF-372 certified for use in potable water systems
  • Patented Design: Protected by US Patent No. 4,497,337 for reliable, proven performance

Comparison to Unprotected Floor Drains

Issue With PPP PR-500 Unprotected Floor Drains
Sewer Gas Infiltration Prevented by Maintained Water Seal Common Problem as Trap Water Evaporates
Maintenance Requirements Automatic Operation, Minimal Maintenance Regular Manual Refilling of Traps Required
Health & Safety Risks Minimized Through Consistent Protection Potential Exposure to Harmful Gases
Odor Control Effective Elimination of Sewer Odors Recurring Odor Issues
Code Compliance Meets Building Code Requirements May Not Satisfy Code Requirements

Distribution Units

  • DU-4 & DU-U: Distributes water to up to two floor drain traps
  • Installation Requirements: Must be installed level, with clear plastic cover, and with access for periodic inspection
  • Debris Protection: Use debris loop to prevent foreign material from entering the primer

Educational Resources

Learn more about trap primers and the PPP PR-500 with these helpful guides:

What's Included

  • 1 × PPP PR-500 Prime-Rite Trap Primer Valve
  • Installation instructions

Note: This product is backed by Precision Plumbing Products' manufacturer warranty against defects in materials and workmanship. For complete warranty information, please refer to the documentation included with your purchase.

Material: C69300 ECO corrosion resistant brass

Dimensions: 4 3/8" (110mm) x 1 1/4" (32mm)

Maximum Pressure: 80 PSIG (552 kPa)

Minimum Pressure: 20 PSIG (138 kPa)

Activation: 10 PSIG (70 kPa) pressure drop

Connection: 1/2" NPT (M) inlet, 1/2" FNPT outlet

Water Supply: Cold water only

Drain Capacity: Serves up to 2 floor drains

Installation: Minimum 12" off finished floor

Special Features: No adjustment required, no springs, diaphragms, or plastic parts

Compatible With: DU-4 & DU-U distribution units

Compliance: Low-Lead Law

INSTALLATION

FFlush line before installing. Mount on cold water line (1½" or less). Install where pressure drops at least 3 PSI. Keep 12" minimum height before elbow. Add shut-off valve for servicing. Place near fixture with 10 PSIG pressure drop. For multiple drains, use DU-U or DU-4 unit. Works at 20-80 PSIG.

MAINTENANCE

This automatic trap primer requires minimal maintenance. Periodically check that it’s delivering water to floor drains when pressure drops occur. Inspect the stainless steel mesh screen annually for debris and clean if necessary. Verify that all supply lines to drains remain clear. Do not subject valve to pressure exceeding 80 PSI. Check connections periodically for leaks or signs of corrosion.

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