Geothermal Vaults andHDPE Structures
What is a Structure?
•Valve Vault
•Manhole
•Pump Station
•Catch Basin
•Junction Box
•Wet Well
•Sump
•Knock Out Pot
•Valve Box
•Tank
•Etc
All of these have beenmade from HDPE byISCO Industries
For:
Water/Sewer
Industrial
Landfill
Irrigation
Geothermal
Typical HDPE Structures
Geothermal Structures
Advantages of HDPE Structures
They are the same as the pipe:
•Tough
•Flexible
•Leak-free
•Lightweight and easy to install
•Corrosion & Chemically resistant
HDPE structures can be prefabricated forinstallation savings and higher quality.
Design Elements
•Header/Circuit size
•# of Circuits
•Location of Circuits
•Circuit Valves
•Header Valves
•Manway
•Misc
Header and Circuitconfiguration
•Header size istypically 4”-10”which does notaffect cylinderdiameter
•# of circuits andlocation ofcircuits willaffect length
Location of Circuits
•Standardconfiguration isfor circuits tocome out bothsides of vaults
•Can offer circuitsto exit one side
•Can createunbalancednumber from oneside to other
Valves for Vault
•Standard Valvestypically butterflyvalves
•Balancing valvesand circuit settersavailable
•Ball valves forpurge ports only-not recommendedfor circuits
•Typically providebutterfly valves formain shutoff
•New Bypassrecirculation
Manway design
•Standard BoltedCover
•H-20 load bearingavailable
•Variable diameterwith 28” ODstandard
•Height can bespecified- shippingconcerns become afactor withexcessive height
Miscellaneous Items
•Ladder (standard)
•P/T ports(standard)
•Lights
•Electrical outlets
•Drain Valves formain/header
Miscellaneous Items
•Sump
•Pump
•Pressure Gauges
•Thermometers
•Drain Valve forcircuits
•Keep in mindthis vault isnot amechanicalroom.
Factory Tested for Leaks
•Header and Circuit piping hydrostaticallytested to 100 psi
•Structure tested with 2-3 psi of air to verifyvault sealed from groundwater andweather.
•Misc items like sump/pump becomeunessential if liquid in interior comes fromupset conditions, not standard conditions.
Installation Value
•Lightweight
–typicallyless than5000 lbs
–Maximum of15000 lbs for36 circuits
Installation Value
•Fast install
–Compared toalternatechoices, timeis measuredin hoursversesdays/weeks
Installation Value
•Simple andReliableConnections
–Circuits andheaders areconnected tostubs onvault withButt WeldingorElectrofusion
•Years of Designand Fabricationexperience canhelp preventinstallation andoperationheadaches.
•Choose an ISCOCircuitmaker Vaultfor reliable strengthand leak freeperformance!