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Air Release and Vacuum Break Valves

Air Release and Vacuum Break Valves

The presence of trapped air in a pressurised pipeline can have serious effects on system operation and efficiency.

As air pockets accumulates at high points, they reduce the effective cross-section of the pipeline in their location, decreasing the water flow, increasing energy consumption required to pump the water through, thus reducing the overall system efficiency.

See our Hynds Water Catalogue.

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Auckland Airport Upgrade

Hynds Water collaborated with Downer Civil Project Team to provide advice and solutions to the challenges they came across on a Watermain project at Auckland International Airport.
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Flex 900 Ball Joints for Watermain

When working on pressure pipelines, compensating for ground movements, seismic activity and vibration can be a challenge for designers and asset owners. Particularly when using rigid pipe materials.
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Quality Valves for West Auckland

The Hynds Water Team worked closely with one of our valued customers providing water products, advice, service, and timely supply for several Watermain sub-division installations in West Auckland.
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State Highway 1 Watermain Improvements

Hynds Water were selected as supply partner for this drill shot under State Highway 1 north of Auckland, product included PE pipe, Ductile Iron Fittings Valves and Electrofusion couplers.
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We’ll Make That Problem Go Away For You

Jobs don’t always go together as planned, sometimes it’s the design, sometimes the goal posts get shifted mid game. 
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East Coast Bays Booster Pump Station

Hynds Water have been working with the Watercare project delivery team and Fulton Hogan on the East Coast Bays Booster Pump Station Project.
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A Tricky Situation – A Simple Solution – Synoflex

Our customer had to complete a cut in of a new valve assembly on an existing wastewater pressure main in a confided space environment, all inside a limited time window.
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Learning and Adapting after Cyclone Gita

In 2018, Cyclone Gita caused havoc across the lower North Island. New Plymouth was hit particularly hard, causing widespread power outages, felled trees and landslips and major pipe damage to one of the potable water supplies.
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Live Pipe Repair Fitting

This pipeline provides drinking water to Featherston and is leaking on the section that crosses the Tauherenikau river.
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Waingake WTP Pipe Reinstatement – Cyclone Gabrielle

When the treated water pipelines from the Waingake Water Treatment Plant were damaged by cyclone Gabrielle, Gisborne’s drinking water was compromised.
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Superior Seismic Resilience for Wellington Children’s Hospital

From concept, construction and hand-over to Te Whatu Ora late 2022, Hynds have been exemplary in the development of this critical component for this world class medical facility.
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Flex-Tend® Installation at the Korokoro Valve Chamber - Wellington Water

Wellington Water builds seismic resilience for critical water supply.
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