Buffer Tanks

Aquazone buffer tanks, designed & manufactured to the pressure vessel code, are typically used in chilled and heating water systems.

Economical, reliable and convenient

An Aquazone buffer tank is often incorporated into a chilled water or heating water system that has insufficient water volume throughout the piping network in relation to the chiller or boiler capacity. By adding a buffer tank to the system, extra volume is created which provides additional “buffer” capacity and eliminates the problems such as excessive compressor cycling, poor temperature control and erratic system operation. In some instances when a large building is undergoing refurbishments or extensions, the capital expenditure of a larger chiller can be deferred, by installing large buffer tanks and utilizing the existing chiller.

These tanks are insulated so that the stored water maintains its chilled temperature. This allows the tank to charge up during off peak periods, thus reducing the chillers workload during peak periods throughout the next day.

  • Capacities ranging from 300 – 90,000 Litres
  • Tanks are generally pre-insulated and cladded in accordance with the NCC requirement
  • Wide range of accessories available including isolating valves, pipes, internal baffles and gauges.

WE CAN HELP YOU CHOOSE THE RIGHT Buffer Tanks FOR YOUR PROJECT

Aquazone tanks are available as either bare tanks and fully pre-insulated and cladded, with transport protection.
What makes the Aquazone range of buffer tanks unique is the strict compliance & necessary documentation to AS1210, AS4343, AS1554 and other pressure vessel related standards. Masterflow also designs and fabricates tanks compliant with ASME standards as required. Extensive research, modelling and field testing has allowed Masterflow to determine how to achieve maximum effective capacity, whilst minimising pressure loss and creating optimum flow direction within the tank. All designs are certified by independent pressure vessel certifiers. Insulation is fire retardant and environmentally friendly, conforming to EcoGreen code. Tanks

Case Study

King Street Wharf Precinct

The King Street Wharf precinct, which is the area bound by Lime, Shelly & King Streets Sydney houses a range of commercial offices, Highrise hotel and several restaurants of various cultures. In preparation of the Bicentennial Celebration, the NSW embarked on a huge redevelopment of Darling Harbour which included the King Street Wharf (KSW). Work begun on this area in the mid1990s and was completed in 2000. Like many harbour front commercial properties, the sea water is used as the means of Heat Rejection. Pumps were installed in numerous basement plant rooms that serviced the mechanical requirements of the buildings within the precinct.

Selecting the right size tank is important to ensure an efficient system design. Masterflow engineers have both experience in mechanical systems and pressure vessel design.

One the tank capacity has been determined and appropriate features confirmed, pricing, drawings and lead times are submitted. For its standard range of tanks from 300L to 5000L, Masterflow generally holds these in stock or at the very least have them well into production.

Over 5000L or for custom designed tanks, a minimum 6 week lead time applies. A drawing must be signed off before manufacturing can commence.

Masterflow has 3 plants, with 2 overseas that are managed by our QA manager. The 3rd is within our manufacturing facility at Wetherill Park, where we typically fabricate high Hazard Level tanks or tanks out of gauge.

Selecting the right size tank is important to ensure an efficient system design. Masterflow engineers have both experience in mechanical systems and pressure vessel design.

One the tank capacity has been determined and appropriate features confirmed, pricing, drawings and lead times are submitted. For its standard range of tanks from 300L to 5000L, Masterflow generally holds these in stock or at the very least have them well into production.

Over 5000L or for custom designed tanks, a minimum 6 week lead time applies. A drawing must be signed off before manufacturing can commence.

Masterflow has 3 plants, with 2 overseas that are managed by our QA manager. The 3rd is within our manufacturing facility at Wetherill Park, where we typically fabricate high Hazard Level tanks or tanks out of gauge.

Frequently asked Questions

AS1210 page 21 clause 1.8.12 calls up AS4343 as the code for determining Pressure Vessel Hazard Levels. Therefore based on AS4343:2014 page 10 clause 2.2.6:

Your PV = 7500 x 1.6 = 12,000 (below 100,000 MPa.L)
Water with Design Temp above 0 deg C up to 65 deg C max
Will give you the Hazard Level “E” as correct

With the standards they now have ongoing codes covering additions for Pressure Vessels such as:- AS4458 for Pressure Equipment – Manufacture; AS3892 for Pressure Equipment – Installation; AS3788 for Pressure Equipment – In Service Inspection. (A good money maker for the Standards Supplier)

All these codes are referenced within AS1210 and with your Maintenance and Operation Instructions for your client, you should call up AS3892 if they are installing and AS3788 for the ongoing inspections that is required by WorkCover.

When you call up these code you are then putting the risk / code requirements on the client to do their part and takes you out of the equation / insurance claims etc.

Ozone depleting substances (ODS) are a list of materials (gasses mostly) that are proven to destroy the ozone layer. The rate at which they do so varies per substance and are therefore more or less prohibited. In the insulation industry, ODS could be used as a foaming agents in production, which can stay trapped in the material and leach out over time.
Current regulations prohibit the use of the ODS material more and more, requiring MSDS and TDS documents to prove it.
You can be assured all the products we use comply with all Australian Standards for this and this is shown on the TDS documents.
A vacuum breaker valve normally goes on the top of a tank, but rarely used on tanks in HVAC industry. They are used as a safety measurement when draining the tank, which is when a vacuum may occur. They are commonly placed in the system pipeline as opposed to the tank. They are mostly used on petrol tanks.
Refer to Masterflow office

ENGINEERED SOLUTIONS FOR PUMPS, TANKS, CHILLERS, FILTRATION, VALVES & CONTROLS. Get a quote or contact us today

Masterflow is and has been a trusted name among Australia’s HVAC suppliers for over 20 years. We supply a wide range of pump types and can provide the ideal solution to the many and varied fluid requirements that face the industry. We pride ourselves on remaining agile, innovative, and having fast turn arounds. We are local! All our pumps are locally designed, built and manufactured here in Australia.

Our experienced team are here to help you. Please call us on 02 9748 2022 or leave us a message on our contact form.