Amtrol ST-5 2 gallon expansion tank for TIGERFLOW Tigercub booster
Amtrol ST-5 2 gallon expansion tank for TIGERFLOW Tigercub booster

TIGERFLOW Tigercub and Ocelot Diaphragm Expansion Tank - 150 PSI

Capacity - Rating: 2.0 Gal - Non-ASME
Model - Part No.: Amtrol ST-5 - 3200013721

Product variant with selected options does not exist!
$288.26
SKU: 3200013721
Weight : 5.0 lb
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Description
TIGERFLOW · Booster Accessory
Diaphragm Expansion Tanks
Diaphragm expansion tanks offered with TIGERFLOW Tigercub and Ocelot boosters, 2 to 44 gallons, 150 PSI.
Overview

A small expansion tank on a booster carries the leak load, so the pump does not cycle every time a fixture drips. TIGERFLOW offers Amtrol ST series tanks from 2 to 44 gallons for the Tigercub (non-ASME, plus a 34-gallon ASME model) and a 4.4-gallon FDA rated diaphragm tank for the Ocelot Duplex. The 2-gallon ST-5 is rated 150 PSI and 200°F, ships with a 38 PSI precharge and has an NSF-61 certified antimicrobial liner.

What Ships and What It Needs to Run

Included: one diaphragm expansion tank of the size selected.

Genuine TIGERFLOW equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.
12-Month TIGERFLOW Warranty

Covered for 12 months from the date of purchase under TIGERFLOW’s published warranty terms.

Specifications
2-gallon ST-5 150 PSI maximum working pressure; 200°F maximum temperature; 38 PSIG (2.6 bar) factory precharge; NSF-61 certified antimicrobial liner
Amtrol ST series 2.0, 10.3, 14, 20, 34 and 44 gallon, 150 PSI; ST-70VC 34 gallon ASME
Ocelot tank 4.4 gallon, 150 PSI, FDA rated diaphragm
Part Numbers
Part No. Description Fits
3200013721 Amtrol ST-5 2.0GAL 150PSI 2.0 Gal - Non-ASME
3200013723 Tank 4.4 Gal 4.4 Gal - FDA Diaphragm
3200013725 Amtrol ST-25V 10.3GAL 150PSI 10.3 Gal - Non-ASME
3200013727 Amtrol ST-30V 14GAL 150PSI 14 Gal - Non-ASME
3200013771 Amtrol ST-42V 20GAL 150PSI 20 Gal - Non-ASME
3200013729 Amtrol ST-60V 34GAL 150PSI 34 Gal - Non-ASME
3200013773 Amtrol ST-70VC 34GAL 150PSI 34 Gal - ASME
3200013731 Amtrol ST-80V 44GAL 150PSI 44 Gal - Non-ASME
Before You Order
Set the tank precharge below the booster’s cut-in or set point as the tank maker directs. Ratings other than the 2-gallon tank’s are from the price-list descriptions (150 PSI).
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
Tigercub CD Catalog: Dimensions, Options and Curves Ocelot Simplex and Duplex Booster Brochure (April 2025)
Videos

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

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