Maintaining Complex Water Systems with Cla-Val Valves
The Client: Western New York Water Utility Company
A large, Western New York water utility using Cla-Val for its demanding water control system needed to maintain pressure levels during normal and high flow times.
The Challenge:
This water control system needed to take high water pressure from the main and reduce it to lower pressure for a neighborhood or custody transfer to another district. The system needs to be sized with normal flow and high flow controls, with two different diameter valves to accurately control and maintain pressure flow.
During high flow demand times, water pressure would decrease. The client needed to incorporate durable pressure control values into their system to meet fluctuating water user demands at peak times.
The Solution:
R.M. Headlee was able to source Cla-Val pressure control valves that the customer needed to automatically maintain continuous water pressure levels.
Cla-Val Models 136-03 and 636-03 Solenoid Control Valves are on-off control valves that either open fully or close, drip-tight, upon receiving an electrical signal to the solenoid pilot control. The valve consists of a Hytrol main valve, a three-way solenoid, and a high-capacity, three-way pilot valve. The solenoid control operates the three-way valve which alternately applies pressure to or relieves pressure from the diaphragm chamber of the main valve. It is furnished either normally open (de-energize solenoid to open) or normally closed (energize solenoid to open).
The Result:
The water utility company utilizes a combination of three Cla-Val pressure control valves to properly control water flow and pressure ratings.
The pump control valve is used to build up pressure for the electric control valve used at a pump house. The valve is opened to allow the pump to start up, prime, and discharge back into the wet well to purge dirt or debris from the system. After a pre-set time the valve is controlled to close and the pump is put into service.
During normal flow, the smaller valve is in control and will send water downstream at the preset pressure rating. In a high flow scenario (hours of the day with high usage or fire flow) the pressure would continue to decrease as demand increases. The second larger valve will then start to open approximately 5 psi below the setpoint of the smaller valve. With the two Cla-Val valves open, the water utility facility can meet the requested demand for the portion of the system.
Are you looking for Cla-Val values to update your water pressure system? Request a quote today!
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