Pressure Control Systems

The Waterous Intake Relief Valve system is designed to act as a safety valve by "dumping" excess pressure from the inlet side of the pump. The Discharge Relief Valve provides sensitive pump control to protect firefighters from sudden pressure surges resulting from changes in discharge flows from the pump.


Discharge Relief Valve



Designed with a ‘‘built–in–memory’’, this system has a wide continuous range of pressure control from a minimum of 75 to a maximum of 300 psig (5.2 to 20.7 bar) depending upon pump performance characteristics, and may be put in or taken out of operation without disturbing the pressure setting. This lets you leave the system at a pre–set ‘‘ready–to– use’’ pressure setting. The Waterous discharge relief valve system incorporates two separate units, a panel mounted pilot valve which controls the operation of the relief valve proper, and the relief valve which is normally mounted on the pump.


Intake Relief Valve



The Waterous Intake Relief Valve system incorporates two separate units for ultimate flexibility in installation and operation: the pilot valve and the main valve. The pilot valve controls operation of the main valve and can be panel mounted to be easily field adjusted for varying operating conditions, or compartment mounted and preset for a specific pressure. It includes a removable strainer and removable needle valve for easy servicing.

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  • Meets or Exceeds National Fire Protection Association Standards
  • China Compulsary Certification

Discharge Relief Valve:

Among the features that make the Waterous discharge relief valve system reliable and simple to use and maintain are:

  • Corrosion resistant brass, bronze and stainless steel used in all critical areas throughout the system.
  • An easily cleaned pilot valve strainer that can be removed from the panel and cleaned even while the pump is operating.
  • A smooth‐turning pressure control with exclusive needle thrust bearing for precise pressure control adjustment.
  • No diaphragm to become strained or ruptured.
  • An easily removeable orifice that permits quick and simple cleaning or replacement.
  • Two indicator lights show the position of the relief valve; green for fully closed and amber for at least partially open.

 

Intake Relief Valve:

  • Among the features that make the Waterous intake relief valve system reliable and simple to use and maintain are:
  • Corrosion resistant bronze and stainless steel used in all critical areas throughout the system.
  • Easily serviced with strainer and needle valve readily accessible on panel.
  • Smooth turning adjustment knob with ``cross‐slot'' to accommodate a spanner wrench or similar flat tool.
  • Calibrated from 50 psi to 250 psi.
  • Remote mounted pilot valve for quick response and flexibility in installation.

 

NOTE: Relief valve installed and tested by pump manufacturer.

 

Dimensional Drawings  Instructions
Service Parts Lists
Specification Sheets  Data Sheet

 DS-4004, Pressure Control Systems

 

Sales/Application/Service Help

Industry-leading sales and support.

When you purchase Waterous equipment, not only do you get quality products, you get quality service. Our expert service technicians are the best in the business and they are always happy to answer any service questions you might have. The numbers for our service and training specialists are listed below for your convenience. If you have a general service question please call our main number and our staff will kindly direct you to the appropriate department.

Sales/Applications Assistance

Phone: 651-450-5234 (Press 3)

pumpsales@waterousco.com

Service Assistance
Phone: 651-450-5200
Fax: 800-488-1228

service@waterousco.com

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