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

SKU: PR-500 Category:

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PPP PR-500

What is a Plumbing Trap Primer?

  • Will prime up to 2 floor drains with DU-U or DU-4 units.
  • This valve is designed to be installed on ½” to 1 ½” cold water line, feeding a flush valve or other open and closing valve supply line that is frequently used.
  • Trap Primer valve makeup line to floor drain is suggested to be a minimum of 12” off the finished floor before a 90° elbow can be installed.
  • No adjustment required
  • The furthest recommended distance of makeup line is 20’ to the floor drain.
  • Trap primer make up line must have continuous slope to the floor drain (consult your local code requirements).

A Comprehensive Guide to the PPP, PR-500 Trap Primer


Weight 1.15 lbs


Key Specs

System operating range: 20-80 psi

pressure drop requirement: 3 psi

Constructed of 693 brass, EPDM E70 O-rings, Dow #7 Silicone, #60 stainless steel mesh screen.

NSF 372 Lead Free

Owner's Guide


Consult local code requirements for installation.

Flush line prior to installation.