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Series V7 Paddle Flow Switch
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©Copyright 2011 Dwyer Instruments, Inc
V7 Flow Switch
Flow switch to meet boiler code pressure and temperature requirementsApproved to UL 353
Safety device ratingV7 web page has link to the file
Where it Fits
The V10 and V8 do not meet boiler code pressure and temperature ratingsThe V6 does meet but is too expensiveSo the V7 fits that gap
Models
Pipe Sizes
It can be used over 4” pipeWe can set up specials in tees and preset for large quantities
Specifications
Wetted Materials: 301 SS, 302 SS, ceramic magnet, body: brass or 316 SSTemperature Limits: -40 to 121 ̊ CPressure Limits: 17.2 barEnclosure Rating: IP66Switch Type: SPDTElectrical Rating: 10A @ 125, 250, 480 VAC
Specifications
Conduit Connection: 1/2” NPSMProcess Connection: 1” male NPTMounting Orientation: Horizontal or vertical No vertical down flowSet Point Adjustment: Vane is trimmableAgency Approvals: CE, UL 353
Selling Points
Key Selling PointsMagnetic Switch Mechanism
Superior to direct drive – no wear or leaks
Stronger VaneVery common to have vanes break on competitor units
Selling Points
Key Selling PointsIntegral weatherproof housing
Competitors are general purpose with weather-proof optionalOften used for pool boilers as installed outside
Other Items
Standard this has the same vane as the V6, but we can put in the V10 vane too
Some customers prefer the reinforced vane
Key Application
All boilers require safety devices according to ASME code
Can be flow, level, pressure, temperature depending on boiler typeVery common to be a flow switch on the water outlet
Applications
Copper fin boilersAlways use a flow switch on the hot water outlet to shut down boiler with loss of flow
Common on commercial hot water heaters
V7 Boiler Example
Applications
General flow provingPump proving
IrrigationBuilding Automation Systems
Leak proving
Questions
To order a free catalog or for more information contact;Dwyer Instruments, Inc., P.O. Box 373,
Michigan City, IN., 46361Telephone: (800) 872-9141 or (219) 879-8000
Fax: (219) 872-9057Internet address: www.dwyer-inst.com
E-mail: [email protected]