HARDI Australia stands with the Naked Farmer19/02/2021
Haeusler Mildura adds HARDI Broadacre sprayers to its expertise26/11/2020
HARDI Australia backs mental health in a tough year25/11/2020
An important message from HARDI Australia18/11/2020
HARDI shines spotlight on mental health by supporting Beyond Bitumen Rally06/11/2020
HARDI TWIN system sprayer the answer for Eyre Peninsula grower26/10/2020
HARDI Introduces H-SELECT nozzle control technology for trailers13/10/2020
Advanced nozzle control technology H-SELECT now available on HARDI COMMANDER10/10/2020
Big capacity and big support bring HARDI home24/09/2020
HARDI Finance announces negative interest rate on RUBICON SP08/09/2020
Hardi Navigator 6000 with ActiveAir at work in SA30/07/2020
ISOBUS ready Hardi Navigator22/05/2020
COVID-19 information - HARDI to Continue Production16/03/2020
Wimmera farmer on top of summer spraying20/02/2020
New NAVIGATOR ActivAir18/12/2019
Watch 'Nozzle Watch'18/12/2019
New face for HARDI in South Australia18/12/2019
Precise speed, rate and droplet control for large spray booms. HARDI H-SELECT.17/12/2019
Separating H-SELECT and PWM16/12/2019
HARDI for Solar Water Pumps26/08/2019
Take a tour of HARDI HELLIOS05/08/2019
HARDI Triple Tier Spray System30/07/2019
Rubicon owner makes a splash30/07/2019
New HARDI Dealers in NSW25/07/2019
National Ag brings HARDI sprayers to Moree04/06/2019
Pump repair video30/04/2019
Beyond Bitumen 201930/04/2019
HARDI Self-Propelled Sprayer powers through11/04/2019
W.A. growers get hands-on with HARDI02/04/2019
HARDI back behind rural wellbeing rally19/03/2019
Online Nozzle Store opens19/02/2019
HARDI HELLIOS goes to work19/02/2019
Study quantifies drift reduction of HARDI TWIN system18/01/2019
HARDI Australia adds Agrifac sprayers to its portfolio17/12/2018
HARDI Works Here06/12/2018
Brisvegas Machinery adds HARDI sprayers to its expertise13/09/2018
Pump repair video30/04/2019
Get the most from your HARDI pump
The HARDI diaphragm pump is a foundation stone of our history – and the heart of your sprayer. HARDI still makes the pumps in-house, in Denmark, from precision-forged steel components and long-life polyurethane diaphragms.
A video on HARDI International’s YouTube channel shows how easy it is to understand, maintain and repair your HARDI diaphragm pump – adding years to its life.
Hosted by HARDI’s Academy Manager in Denmark, Anthony Facchin, the clip shows the very simple steps involved in disassembling, repairing and lubricating the pump. It only takes a few tools and a set of parts to replace the diaphragm and valves if they become worn (usually indicated by a leak) and the result can be many, many extra years of reliable service.
So take a few minutes to watch How to repair your HARDI Diaphragm Pump now.
(Or go to youtube.com/user/HARDIsprayers/playlists any time, and click ‘Instructional Videos’.)
See inside a HARDI Pump
For a fascinating look at how the HARDI pump comes together, you might also enjoy From parts to product: The diaphragm pump which is also on HARDI International's YouTube channel.
The design and operation of the HARDI pump is simplicity itself, which goes a long way to explaining their durability and success. They’re a lot like a two-stroke engine really, except the crankshaft drives the piston instead of the other way around.
The ‘piston’ is, of course, the flexible diaphragm. As the connecting rod pulls that down, fluid is sucked into the chamber in the ‘cylinder head’ through a one-way valve, then forced out the pressure-side valve (the exhaust valve in our reciprocating engine example) as the diaphragm is pushed back up. Apart from galleries feeding fluid into and away from the low and high pressure valves, that’s about all there is to it.
Along with simplicity, the benefits of this design include the robust construction and the fact that the few moving steel parts and their bearings are completely isolated from the fluid. The flexible diaphragm also means there’s no danger of cavitation if the pump is run dry.
All in all, it’s the perfect agricultural pump. Just grease and go… and go, and go, and go!