The Diaphragm Repair Kit for the D-50 Pump is manufactured by Hypro and are an assortment of replacement parts for the D-50 Hypro Diaphragm Pump, which is an essential part of professional pesticide spraying rigs. The Hypro D-50 Diaphragm Repair Kit is great for replacing worn parts on the diaphragm pump that may be causing the pump oil to lose its color and develop a milky, gray substance when spraying.

The Hypro D50 repair kit includes the following: 2 Piston Desmopan Diaphragms, 4 O-Rings, and 1 Accumulator Diaphragm.

Tools Needed

To install the D-50 Diaphragm Repair Kit you will need an adjustable wrench for loosening/tightening and the D-50 Hypro Diaphragm Pump to mount it on.

How to Use

• Step 1: Make sure the D-50 Diaphragm pump is drained of all oil by removing the oil fill cap and turning the pump upside down as well as rotating the shaft until the oil is fully emptied out from the pump.
• Step 2: Remove pump head bolts and heads from the Diaphragm pump and then remove the Diaphragm retaining nut, support washer and diaphragm. 
• Step 3: Turn the Crankshaft to bring the piston to its downstroke and seat the diaphragm into the sleeve groove. Install the new diaphragm, then replace the retaining washer and retaining nut. Here it is also recommended to replace the valve assemblies and O-rings.
• Step 4: Reinstall the pump heads and head bolts then reassemble and refill the crankcase with oil. Rotate the shaft to distribute the oil and fill it to the proper level.

Where to Use

The D-50 Diaphragm Repair Kit is made specifically for the Hypro D-50 Diaphragm Pump.

When to Use

Use the D-50 Diaphragm Repair Kit when the diaphragms, o-rings, and valves on your existing Hypro D-50 need to be replaced due to the pump not pressurizing like normal.

Safety Information

The D-50 Diaphragm Repair Kit is safe to use and easy to install when following the manual instructions.

Special Considerations

It is important to keep several of these kits handy, especially if you use your D-50 constantly. Diaphragms should be changed every 3 months or after 500 hours of operation. *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.