GAP

AUSTRALIA PTY LTD
	The Original "Anti-Shock" Air Release and Vacuum Break Valve. The unique defence against pipe bursts and pipeline system damage!

Glenelg to Adelaide Parklands Pipeline - GAP

Ventomat Valves for Recycled Water – Glenelg to Adelaide Parklands Pipeline

South Australia is the driest state on the driest inhabited continent in the world.

Adelaide, the capital of South Australia, is well known for its parklands that surround the city and North Adelaide.

The challenge for the South Australian government and the City Green Alliance was to maintain this important aspect of the city while protecting one of their most important assets, water.

The answer was of course recycled water, the first stage of which involves the GAP or Glenelg to Adelaide Park Lands Recycled Water Project. This project will result in 3.8 billion litres of water becoming available for irrigation and industry of that, 1.3 billion litres will be used to irrigate the Adelaide Park Lands each year.

The benefits are not only to the Park Lands and the residents and visitors to Adelaide, by using recycled water, ocean outfall discharge is greatly reduced and improved health to the River Torrens and Torrens Lake is significant.

Large Tees

In the picture above you can see the air valve setup utilising Ventomat Air Valves with Integral “Anti-Shock” Mechanism. This is a good example of an air valve set up as the valve comes off a large diameter tee piece before being piped to the side where hydrant cover will be placed over the valve for ease of access.

The large diameter tee is a good design aspect as the large opening helps to capture air bubbles as they travel in the water column while the pipeline is operating.

By releasing this pressurised air it is prevented from collecting at high points where it can sit and build up and greatly reduce pipeline efficiency as well as possibly creating surge problems caused by rapid movement and stoppage of large air pockets.

Faultless Operation

The Ventomat product range has been used widely across South Australia and has been developed to cope with the harsh conditions prevalent in the region. Ventomat valves have been used on raw water from the Murray River for some time and due to the unique sealing mechanics in the valve where the valve essentially cleans itself out, problem free operation is expected and welcomed on recycled water applications by SA Water and its partners.

Surge Analysis

The Ventomat range of air valves come integral with a surge alleviation mechanism and in this instance were modelled by United Water in their surge analysis program to alleviate surge and water hammer.

The Ventomat range of air valves is unique as all 4 functions are housed in the valve body and the “Anti-Shock” function is in all Ventomat valves, it is not just an “add on” feature. A good way to think of Ventomat on a pipeline is like an airbag in a car i.e. it won’t be required all of the time but when it is you will be glad your pipeline is protected with Ventomat Air Release and Vacuum Break Valves with Integral “Anti-Shock” Mechanism