Grundfos GFXA-HP expansion tank (drawing)
Grundfos GFXA-HP expansion tank (drawing)
Grundfos GFXA-HP expansion tank (drawing)
Grundfos GFXA-HP dimensions and weights (submittal)
Grundfos GFXA-HP expansion tank (drawing)
Grundfos GFXA-HP expansion tank (drawing)
Grundfos GFXA-HP expansion tank (drawing)
Grundfos GFXA-HP dimensions and weights (submittal)

Grundfos GFXA-HP High Pressure ASME Expansion Tank - 200 and 250 PSI

Max Pressure: 200 PSI
Capacity: 10 Gal
Model: GFXA-HP 35

Product variant with selected options does not exist!
$2,531.51
SKU: 99469709
Weight : 52.0 lb
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Description
Grundfos · ASME Hydro-Pneumatic Tank
GFXA-HP High Pressure Expansion Tank
48 builds: 24 sizes from 10 to 3,963 gallons, each at 200 or 250 PSI. ASME, replaceable bladder, full acceptance.
200 or 250 PSI Max Working Pressure
ASME Section VIII Div. 1
NSF/ANSI 61 Bladder, FDA Approved
Replaceable Heavy-Duty Butyl Bladder
Full Acceptance
10-3,963 Gallons
-20°F to 240°F
Stainless Steel System Connection
Factory Pre-Charged 40 PSIG
Overview

Grundfos GFXA-HP tanks are ASME hydro-pneumatic tanks for commercial and industrial well systems, pressure-booster packages and other potable water service. They store water under pressure between pump cycles, so the pump starts less often and the system rides through short demands without a pump start. Water is held inside a heavy-duty butyl bladder and never touches the steel shell. The bladder is replaceable, and every tank can be installed vertically or horizontally.

Each tank carries a pressure gauge, a bladder integrity monitor and a standard 0.302-32 tire-valve charging connection. Tanks ship pre-charged at 40 PSIG and are set in the field to the system’s pump cut-in pressure. From the 85 size up, both the top and bottom connections reach the bladder; the bottom one is the system feed and the top one takes a gauge or switch.

The HP build is the same tank rated for higher working pressure: choose 200 PSI or 250 PSI to match the booster’s shut-off head plus suction pressure.

What Ships and What It Needs to Run

Included: the GFXA-HP tank with factory-installed bladder, pressure gauge, bladder integrity monitor and charging valve.

Ships: about 52-12,030 lb by model, by LTL freight to a commercial dock; liftgate or residential delivery is a paid checkout option. Larger tanks ship on their own skid or base ring.

Needed to install: isolation valve and drain at the system connection, a pressure gauge or tire gauge to set the pre-charge, and a level floor or pad rated for the full-of-water weight.

Genuine Grundfos equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.
Specifications
Tank type Hydro-pneumatic, replaceable bladder, full acceptance
Code ASME Section VIII Division 1 (U-stamped)
Max working pressure 200 or 250 PSI by part number
Temperature range -20°F to 240°F
Factory pre-charge 40 PSIG, field adjustable
Charging valve 0.302-32 NC (standard tire valve)
Installation Vertical or horizontal (horizontal: system connection below the centerline)
Listings Bladder NSF/ANSI 61, FDA approved
Models, Part Numbers and Weights
Model Gallons 200 PSI part no. Weight (lb) 250 PSI part no. Weight (lb)
GFXA-HP 35 10 99469709 52 99469754 53
GFXA-HP 50 13 99469710 59 99469755 65
GFXA-HP 85 23 99469711 95 99469757 105
GFXA-HP 130 35 99469712 127 99469758 141
GFXA-HP 200 53 99469723 194 99469759 220
GFXA-HP 300 79 99469725 252 99469760 282
GFXA-HP 400 106 99469726 336 99469761 410
GFXA-HP 500 132 99469727 400 99469762 512
GFXA-HP 600 158 99469728 419 99469763 569
GFXA-HP 700 185 99469729 500 99469764 600
GFXA-HP 800L 211 99469730 592 99469766 711
GFXA-HP 1000 264 99469731 698 99469767 830
GFXA-HP 1200 317 99469732 905 99469768 1,118
GFXA-HP 1400 370 99469743 1,107 99469770 1,330
GFXA-HP 1600 422 99469744 1,413 99469771 1,713
GFXA-HP 2000 528 99469745 1,643 99469772 2,026
GFXA-HP 2500 660 99469746 1,935 99469773 2,352
GFXA-HP 3000L 792 99469747 2,198 99469774 2,782
GFXA-HP 3000S 792 99469748 2,694 99469775 2,965
GFXA-HP 4000 1,056 99469749 3,291 99469776 3,736
GFXA-HP 5000 1,320 99469750 3,858 99469777 4,485
GFXA-HP 7500 1,980 99469751 5,491 99469778 6,583
GFXA-HP 10000 2,640 99469752 6,796 99469779 8,068
GFXA-HP 15000 3,963 99469753 9,814 99469780 12,030

Weights are Grundfos’s published figures (approximate shipping weight). Dimensions in inches. Tanks over 150 lb ship by LTL freight.

Before You Buy — The Limits That Decide the Fit
Pressure The relief valve setting must be at or below the tank rating.
Liquid Potable or clean water. Not for fuel, oil or chemicals.
Sizing Size for the drawdown needed between pump starts at the cut-in and cut-out pressures; the whole tank volume is usable (full acceptance), but drawdown depends on the pressure band.
Weight Large tanks weigh up to several tons empty; check floor loading full of water.
Applications

Commercial and industrial water wells, domestic and fire-free pressure-booster packages (including Grundfos Hydro MPC), irrigation, and other potable water systems where pump cycling must be limited.

Materials of Construction
Shell and heads Carbon steel
Bladder Heavy-duty butyl, replaceable
System connection Stainless steel, NPT
Exterior Primer, black painted
For engineering-led sizing and selection support or a factory submittal, email sales@watermainsupply.com or call 1-888.510.4036.
© Watermain Supply — A division of E4 Industrial LLC
Data Sheet
GFXA-HP Submittal, GFXA-35-HP to GFXA-800L-HP (C-1007C)
Videos

Product videos are being added to this listing. For a walkthrough in the meantime, email sales@watermainsupply.com.

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