Graco Diaphragm Pump - An Extensive Range That Fits Every Job

Graco diaphragm pump series is the pump selection of choice for many reasons. Graco’s ‘Husky’ range of air operated double diaphragm transfer pumps offer an extensive range, which like the ARO diaphragm pump range, is suited to almost any fluid handling application. Graco hold unrivalled stocks at their European warehouse in Belgium and offer competitive pricing. Graco diaphragm pumps feature a simple, extremely reliable, air valve design that makes the Husky range among the most reliable pumps in a variety of applications. The unique, patented, air valve has a three-way pilot valve for true non-stocking operation. All air valve parts are replaceable without opening wetted body parts. The majority of pumps are ATEX certified as standard. A wide variety of pump body and wetted part materials means that there is usually a pump suitable for most applications including aggressive or abrasive fluids.

Understanding The Pump In Your Lubrication System

All air operated double diaphragm pumps (sometimes called membrane pumps), including the Graco Husky 307 pump, work in the same way. Perhaps the best way to understand the principle of operation is to imagine a sink plunger with a rubber plunger on both ends. A pneumatically operated air valve moves the plunger from side to side so that the pumped fluid is alternately ‘pushed’ and ‘pulled’ in a fluid chamber on each side of the pump. Non-return valves before and after this fluid chamber mean that the fluid is moved, or pumped, in one direction only. This simple principle of operation means that there are few moving parts to go wrong and, if they do, it is usually a relatively simple thing to put right. The Graco Diaphragm pump is able to handle small particulate content (the larger the pump the larger the particle size) so are ideally suited to applications like dirty water or waste oil that would be problematic with other types of pump.

Diaphragm pumps stall against a closed end on the fluid line without any damage to the pump which makes them easy to use and control. Graco pumps like the Graco 307 diaphragm pump are also able to run dry for a limited period without, again, causing damage to the pump. Flow rate and fluid pressure are easily controlled with a regulator on the air supply to the pump.Generally diaphragm pumps have a 1:1 ratio which means that maximum fluid pressure will be the same as the air pressure used to run the pump. Graco, however, do now have a small range of 2:1 diaphragm pumps where a higher fluid pressure is required. Air line lubrication is not required. An air line filter is not essential but is probably a good idea.

Finding The Right Size Pump From The Graco Husky Diaphragm Pump Range

The smallest pump in the range is the Husky 205 with ¼” inlets and outlets and a maximum flow rate of 18.9 ltr/min. It is available in polypropylene, groundable acetal or PVDF body options with PTFE or Santoprene wetted parts. Spring loaded check valves allow the pump to work in any orientation. Next in the Graco Husky diaphragm pump range is the Husky 307 with 3/8” ports and a flow rate up to 26.5 ltr/min. This offers body options of polypropylene and groundable acetal and with a wide selection of possible wetted parts. There is a split manifold option available to pump two fluids without mixing. Next are the Husky 515 (plastic) and 716 (metal) pumps with ¾” ports with flow rates up to 57 ltr/min. The plastic 515 pumps also have optional ½” ports. Split manifold options are also available for the plastic pumps. There is a choice of polypropylene, acetal, PVDF, aluminium and stainless steel for the pump body with a wide selection of wetted part materials to suit most applications. Moving on to 1” pumps, Graco now have the Graco Husky 1050 pump range (which replaced the Husky 1040 models which, in turn, replaced Husky 1030 pumps). These are available in aluminium, polypropylene, conductive polypropylene, PVDF, stainless steel and hastelloy and with multiple port options to suit most installation configurations. The maximum fluid flow for the 1” pumps is 189 ltr/min.

When The Graco 716 Diaphragm Pump Is Not Enough - Think Bigger

The Graco 716 diaphragm pump sits somewhere close to the middle of the Graco Husky range in terms of size. But what do you do when the Husky 716 Graco diaphragm pump,or even the larger 1050 pump, is not enough? Luckily, Graco pre-empted its clients’ need for a larger pump and created a much broader range to suit every conceivable situation. Larger Graco diaphragm pumps begin with the 1-1/2” Husky 1590. These are available in aluminium, stainless steel and polypropylene and with a maximum flow rate of 378.5 ltr/min. Externally accessible air valve can be quickly and easily serviced without uninstalling the pump. Next, Graco offer the Husky 2150 range of 2” pumps with a flow rate up to 568 ltr/min, available in polypropylene, aluminium, stainless steel and ductile iron. The largest pump in the range is Husky 3300 with 3” ports and a flow rate of up to 1135 ltr/min giving the potential to empty an IBC in less than a minute. The Husky 3300 replaces older 3275 models and is available in aluminium, polypropylene and stainless steel. The best way to ensure that you buy the pump that is right for your needs is to speak to experts in this field. That is exactly what you will find at Lubetec UK.

Purchase The Right Graco Diaphragm Pump For Your Needs With Lubetec UK

At Lubetec UK, we have worked with Graco for many years. Our technical sales engineers have the knowledge and experience to understand the benefits, as well as the limitations, of air operated double diaphragm pumps and are, therefore, best able to offer the pump best suited to any application. We are always happy to advise on material compatibility or any other aspect of a pumping application such as higher temperatures, fluid viscosity, suction and pumping head limitations, suitable pipework and connections, air consumption etc.To ensure you get the right Graco diaphragm pump for your needs, visit our website at Get a free quote by calling us on +44 (0)113 246 9333.

Our full range of ARO diaphragm pumps are available online. Click on the links below: