1. Pressure Control Systems

    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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  2. Oil Free Priming Pump

    Priming Systems

    Priming System: An electric, oil-free rotary vane primer mounted directly on a Waterous split-shaft pump transmission or separately mounted combined with a Waterous priming valve forms the priming system. A lubrication option allows the use of Prime-Safe lubricant (priming tank is required when the lubrication option is selected).

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  3. Overheat Protection Manager (OPM)

    Overheat Protection Manager (OPM)

    The Waterous Overheat Protection Manager (OPM) acts as a safety device by releasing water from the discharge side of the pump to the ground or back to a water tank once the internal pump water temperature reaches 140°F (60°C).

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  4. Intake / Discharge Fittings

    Fittings - Intake, Discharge and Auxiliary

    Waterous pumps are available with a variety of intake, discharge and auxiliary fittings. Check the Download section below to find the right fittings for your application.

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  5. Drain Valves

    Drain Valves

    Clean up after a fire is hard work. The team at Waterous understands that. Waterous works to make it easier for you and your team.

    The Waterous drain valve is made of stainless steel and a bronze body and allows for simultaneous draining of eight lines!

    Simple operation, easier clean up, Waterous' drain valves are just a click away!

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  6. Pneumatic Shift

    Power Shift

    Looking to do fast positive shifting while still in the cab? Take a look at the Power Shift.

    It includes a complete set of indication lights, in accordance with NFPA 1901. These lights indicate when the shift has been completed to PUMP and OK TO PUMP.

    The units also include a manual override provision which allows the pump to be engaged manually in case of an electrical or air system failure.

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  7. Discharge Valves

    Discharge Valves

    You want easy to operate valves that fit perfectly?

    You got it.


    Waterous’ ball-type discharge valves give you low maintenance costs, easy, and reliable operation at ANY pressure.

    Mechanisms include provisions for valves mounted at the operator's panel, remote panel mounting and top control arrangements.

    Available Sizes: 2-1/2 inch standard or full-flow and 3-1/2 inch sizes.

    3-1/2 inches is ideal for large diameter fire hoses.

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  8. Anodes

    Cathodic Protection

    Galvanic corrosion is huge problem in the water industry. Anytime two different metals are immersed in water and physically or electrically connected a "battery" is formed, as a small amount of current will flow between the two metals. The solution? Cathodic protection. Waterous offers optional corrosion protection with zinc anodes and intake screens. Click to learn more now and save your parts from galvanic corrosion!

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  9. Auto Tank Fill

    Auto Tank Fill

    Do you have an operator constantly monitoring your water tank, and concerns of high hydrant pressure?

    Free up your operator and stop being concerned with high hydrant pressure with the Waterous Auto Tank Fill System!

    Waterous designed this system to solve both of these problems, and it maintains a constant low pressure water supply at the pump intake by automatically filling the water tank and maintaining a water level between 20 and 80%.

    The Auto Tank Fill is designed for any of the Waterous electric-actuated ball valves (sold separately).

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