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GHP SYSTEMS, INC. |
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Manufacturer of Geothermal Wellfield Products |
GeoVault Specifications
GeoVault Specifications |
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GeoVault Engineering
Specifications Scope:
This specification designates requirements for the GeoVault. Structure:
The vault shall be a composite steel and concrete structure.
The vault shall be shipped from factory preformed for a concrete pour
with all reinforcement rods, manifolds, valves and piping secured in place.
The interior shell shall consist of a heavy-duty steel frame and base
where all joints have a continuous weld. The
base frame and cross bracing shall be constructed of ¼” – 3” x 8”
square steel tubing. The base cross
bracing shall be spaced a maximum of 2 feet on center with ¼” – 3” x 3”
angle iron. The sidewall and ceiling frames and all cross bracing shall be
constructed of ¼” – 3” x 3” angle iron.
Sidewall and ceiling cross bracing shall be spaced a maximum of 2 feet on
center. The steel interior
walls/ceiling and stainless steel floor shall be constructed of 12-gage sheet
that are specially treated with a rubberized rust resistant coating on interior
side and outside base. All sheet
steel shall have a 2” weld every 12” at seams and support framing and a
continuous weld around the base. ½”
reinforcement rod shall be placed 12” on center vertically for sidewalls and
on a 12” x 12” grid spacing for the ceiling.
All reinforcement rods shall be located 3” within the concrete from the
interior side and welded to steel framing every 2 feet or less.
The outer shell of the walls and ceiling shall consist of 8” thick
concrete that is poured by the contractor on-site and vibrated into place.
The manhole shall be constructed of ¼” sheet steel with a 3” flange
that is anchored into ceiling concrete and welded to ceiling frame; all welds
being continuous. Manifolds: High-density polyethylene (HDPE)
pipe and fittings, joined together with heat fusion, shall be used for all of
the vault’s circuit and main header piping.
All HDPE pipe and heat fused materials shall be manufactured from
high-density, high molecular weight PE 3408 polyethylene compound that meets or
exceeds ASTM D 3350 cell classification 345464C, and is listed by the Plastic
Pipe Institute in PPI TR-4 with HDB ratings of 1600 psi (11.04 MPa) at 73°F (23°C)
and 800 psi (5.52 MPa) at 140°F (60°C). All circuits 2” and greater shall include butterfly valves constructed of lug type/lever with cast iron body, aluminum-bronze disc, EPDM Seat, 416 stainless steel stem, rated at 200 psi. Circuits smaller than 2” and all fill ports shall be ball valves with full port opening with blow out proof stem, 600 psi non-shock cold WOG. Pressure/temperature
ports shall be brass and have a dual seal core of Nordel, good up to 350°F for
water and shall be rated zero leakage from vacuum to 1000 psig.
Plug shall be capable of receiving a 1/8” pressure or temperature
probe. Notice:
Information contained in this document is subject to change without notice.
This document reports accurate and reliable information to best of our
knowledge but our suggestions and recommendations cannot be guaranteed because
the conditions of use are beyond our control.
The user of such information assumes all risk connected with the use
therefore. GHP Systems, Inc.
assumes no responsibility for the use of information presented herein and
hereby disclaims all liability in regard to such use.
GHP Systems reserves the right to upgrade the design/specifications of
the GeoVault without notice. |
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kcj@ghpsystems.com with
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