Pilot Operated Constant PRV

Pilot Operated Constant PRV (KRD)

Product Code: KRD
The KRD automatically reduces pressure from a higher inlet pressure to a steady lower outlet pressure by using a pilot mechanism that quickly responds to changes in the water supply pressure.
 
The KRD maintains constant pressure under a wide range of flows while offering very low head loss. Outlet pressure is easily set over a wide range of pressure and maintained to within a 6% fluctuation.

Basic Applications:

The KRD is a pilot operated pressure reducing valve designed to be used in hotels, condominiums, hospitals or any other place where a stable pressure of cold and hot water supply is required under any condition. In cases where water heaters are used, fluctuation in outflow temperature can be influenced by the fluctuation of outlet pressure. Installation of the KRD on all hot and cold water pipes before any taps and showers solves this problem.

Features:

  • Completely Automatic
  • Quick Response
  • Special Design Eliminates Need for Other Equipment
  • Bronze and Stainless Steel Materials Prevent Rust Contamination
  • Extraordinary Space Saving
  • Very Low Head Loss
Conventional systems use at least 4 or 5 risers for gravity free flow supply using zone pressure reducing systems every 3 or 5 floors. These conventional methods can only control outlet pressure to within a 30% fluctuation. Large valves are needed and still may need individual pressure reducing valves for each flat or apartment.
 
The KRD system needs only one riser to maintain a flat outlet pressure thereby saving on the installation cost of risers, large zone pressure reducing valves, and individual pressure reducing valves.

Specifications:

Available Sizes: 40mm, 50mm
Working Temperature: KRD (C) 0 to 60°C, KRD (H) 0 to 90°C
Applicable Fluid: Water
Working Pressure (inlet): 0.15 to 1.6 MPa
Standard Set Pressure: 0.3 MPa
Shell Test Pressure: 2.4 MPa

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