Gates & valves.
Slide gates, knife gate valves and screening equipment from Jash Engineering, for dams, canals, treatment plants and industry across Australia and New Zealand.
Water control and screening equipment, supplied and supported locally.
AirAqua is the exclusive distributor of Jash Engineering for Australia and New Zealand. Jash designs and manufactures gates, knife gate valves and screening equipment for dams, canals, water and wastewater plants and industry, in materials from cast iron and stainless steel to FRP and composite.
One local team
Quotes, drawings, technical guidance and logistics all come through AirAqua.
Any size, any material
Cast iron, stainless steel, aluminium, FRP, composite and HDPE gates, and knife gate valves up to DN 4000.
Built to recognised standards
AWWA C560 to C563 and C520, BS 7775, IS 13349, MSS SP-81 and TAPPI, with NSF-61 certified EPDM seats and paint available.
Engineered to your duty
Custom designs for larger heads and sizes, with manual, electric, hydraulic or pneumatic operation.
Where Jash equipment works.
Find the right gate, valve or screen.
28 product families. Filter by type or search by name, series code, material or standard, then open any product for specifications, variants and its brochure.
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Try a broader term, or . If you can’t find what you need, tell us the duty and we will check the full Jash range.
Ask AirAquaAlso supplied on request: water hammer control devices, Archimedean screw pumps, bulk solids handling valves and suspended grab screens.
Jash equipment in service.
A selection of installations from Jash’s own project references, from dam gates in North America to screening plants in Europe and Asia.
Photos and project details courtesy of Jash Engineering.
Engineered by Jash, supplied by AirAqua.
Jash Engineering has designed and manufactured water control equipment since 1948. The Jash group includes Rodney Hunt in the USA, a flow control brand with roots back to 1840, Mahr Maschinenbau in Austria, which introduced the first mechanised screen in 1927, and Waterfront Fluid Control in the UK. With manufacturing in India, the USA, the UK and Austria, about 950 people across three continents and over 350 years of combined experience, it is a leading name in water control.
Own foundry and fabrication
In-house cast iron foundry, CNC machining, certified welding and hydrostatic testing of valves up to DN 4000.
Certified quality
Manufacturing under ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018. Products carry CE, NSF and CRN certificates; contact us for details.
Consultant approved
Approved by consultants such as Jacobs, Black & Veatch, Stantec and AECOM. Installations and customer references are available on request.
Company information is taken from Jash Engineering brochures and AirAqua’s partner profile. AirAqua confirms current specifications, certifications and lead times at quotation.
Brochures and technical data.
Download the Jash product guides. For quotes, drawings and technical support, contact AirAqua.
Water & sewage control equipment
Slide gates, stoplogs, bulkhead, flap, roller, butterfly, crest, radial and bonneted gates, with series codes and sizes.
PDF · 5.0 MBKnife gate valves
MONO and ZFI valves: selection chart, specifications, test pressures, dimensions, options and modes of operation.
PDF · 12 MBScreens & screening conveying equipment
Trash racks, bar screens, step, band and drum screens, conveyors and washer compactors.
PDF · 4.0 MBTell us about your project.
Send us the duty and we will respond with a quote. It helps to include: