The Hypro D-252 Diaphragm Pump, manufactured by Hypro, is an essential part in pesticide spray rigs.

The purpose of Hypro pumps is to deliver a pressurized spray of liquid pesticides. The Hypro D-252 Diaphragm Pump is used for agricultural and industrial spraying of insecticides, herbicides, emulsives, aromatic solvents, liquid fertilizers, and many other chemicals.

This 12 lb. pump features a max flow of 6 gpm (gallons per minute) and a max pressure of 290 psi. Use this diaphragm pump to upgrade your spraying rig set up for medium pressure spraying for weed control, pesticide applications, fertilizer applications and other uses.

Tools Needed

To use the Hypro D-252 Diaphragm Pump you will need to install it onto a pesticide spraying rig. For this, you will need a base plate and two Lovejoy couplets. You will also need a strainer to catch any debris.

How to Use

• Step 1: Following system installation instructions that come with the Hypro D-252 Diaphragm Pump service manual, install the pump to your pesticide spraying rig system. The Pump hooks up to the gas engine via 2 Lovejoy couplets and you will need to mount it on a mounting base which will hold it onto the frame then configure plumbing.
• Step 2: Connect the desired number of hoses to the Diaphragm pump hose barbs on the control valve and then prime the pump by making sure all connections are tight and do not leak air.
• Step 3: Fill the pump with the correct level of oil and then start the pump and let it run for approximately one minute a low pressure. Test it out to see if it is pressurizing properly or if adjustments need to be made.
• Step 4: While the pump is operating, adjust the pump to the desired pressure by twisting the pressure regulator knob to the "A" position for agitation or in the closed position to send pressure to the hose reel to spray. The pressure valve up top can be turned clockwise to increase pressure and counterclockwise to decrease pressure.

Where to Use

The Hypro D-252 Diaphragm Pump can be used on power sprayers and pesticide spraying rigs and is essentially the heart of the sprayer. It can be used as part of a spraying rig on industrial sites, residential areas or agricultural settings.

When to Use

Use the Hypro D-252 Diaphragm Pump when you need to replace an older Diaphragm Pump that has lost pressure on your power sprayer or spraying rig.

Safety Information

The Hypro D-252 Diaphragm Pump is safe to install and operate when done so by following the service manual instructions. Use the proper PPE (gloves, long-sleeved clothing) when operating and maintaining the pump.

Special Considerations

Never pump corrosive or abrasive liquids as these will cause rapid wear or deterioration of body, rotor, shaft, and seals in the pump. The pump should be used only with liquids compatible with pump component materials. Never exceed maximum specified rpm and pressure. Never run the pump dry. Failure to follow this warning will void the product warranty.

*We do not accept returns on equipment or electronics, all sales are final. We do this to ensure that the products we send out are brand new, never opened, and fully operational for our customers to ensure the packages are covered by their respected manufacturer's warranties.