Nelson Irrigation Australia

1/2" Mini Regulator Drain Check

The MRDC ensures high uniformity and even flow throughout your system by eliminating pressure variation from uneven topography or friction loss. The drain check feature eliminates sprinkler drizzle during shut down and start up.

Pressure Regulator on R10T


The MRDC (mini regulator-drain check) combines the features of the MR (mini regulator) with those of the MDC (mini drain check).

  • Eliminate sprinkler drizzle during system start up and shut down.
  • Reduces a high inlet pressure to a constant outlet pressure.
  • Ideal for use with 1/2" Acme threaded Rotator Sprinklers, especially the R2000WF.
  • 0.15-5 gpm (34-1135 lph)

Choose from the following nominal regulated pressures:

  • 20 psi (1.4 bar) / 30 psi (2.1 bar) / 35 psi (2.4 bar) / 40 psi (2.8 bar) / 45 psi (3.1 bar) / 50 psi (3.4 bar) / 60 psi (4.1 bar)

Always maintain an inlet pressure of at least 5 psi more than the nominal pressure rating.

Related Products

MRDC - 1/2" Acme Threads

MRDC - NPT Threads