Gas Flow Control Valve can be used with Cl, SO2, NH3, and CO2.
Original Press Release
Severn Trent Services Introduces New Capital Controls® Intelligent Gas Flow Control Valve
Press release date: December 14, 2009
Device Eliminates Need for Continuous Operator Monitoring, Reduces Capital Costs The Series 70CV3000 is a wall-mounted, integrated, microprocessor-based control valve that responds to multiple process signals from a water flow transmitter or chlorine residual analyzer.
FORT WASHINGTON, Pa. - Severn Trent Services has introduced the Capital Controls® Series 70CV3000 Chloromatic(TM) Intelligent Gas Flow Control Valve, a wall-mounted system designed to control chemical feed in water or wastewater applications. The Series 70CV3000 eliminates the need for continuous operator monitoring and manual adjustment of the gas feed rate resulting from changes in flow and/or residual levels. The automation of the chemical feed process will yield a reduction in gas consumption for water and wastewater utilities, since manual system feed rates are based on peak process conditions. The new gas flow control valve is used in conjunction with a vacuum regulator, gas flowmeter and an ejector to provide a complete disinfection system.
The Series 70CV3000 responds to multiple process signals from a water flow transmitter and/or chlorine residual analyzer and is integrated with a microprocessor-based controller. The intelligent gas flow control valve eliminates the need for a separate controller, so less equipment is required at installation, producing additional cost savings. The system also eliminates the requirement for a differential pressure regulator to hold the flow rate at the desired setting since the valve operates at sonic conditions, further reducing capital costs.
While the Series 70CV3000 features ten range capacities from 10 to 3,000 pounds per day (up to 60 kg/hr) for chlorine, it is also suitable for use with sulfur dioxide, ammonia and carbon dioxide. The system comes standard with an 11-step calibration of the valve plug that yields a true gas flow retransmission signal and eliminates the need for a separate D/P transmitter.
The Series 70CV3000 is field configurable for flow proportioning, residual, compound loop or feed forward control.
About Severn Trent Services
Severn Trent Services (www.severntrentservices.com), with global headquarters in Fort Washington, Pa., USA, is a leading supplier of water and wastewater solutions. The company's broad range of products and services is concentrated around disinfection, instrumentation and filtration technologies, and contract operating services. Our analytical services group is the United Kingdom's leading environmental testing organization, and our international operating services business provides worldwide contract operation and support for all aspects of water and wastewater utility operational development and business transformation. Severn Trent Services is a member of the Severn Trent Plc (London: SVT.L) group of companies. Severn Trent is a FTSE 100 company.