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The genuine Udor diaphragm rebuild kit for Kappa-55 diaphragm pumps. It includes three Desmopan piston diaphragms, the accumulator diaphragm and six valve o-rings, everything needed for a routine diaphragm rebuild on a 3-diaphragm pump. Keep a kit on hand so a ruptured diaphragm doesn't shut your rig down mid-season.
| Part Number | Udor 8700.26 (02-8700.26) |
| Diaphragm Material | Desmopan |
| Fits | Udor Kappa-55 diaphragm pumps |
| Udor Part | Description | Qty |
| 0903.50 | Piston diaphragm, Desmopan | 3 |
| 0903.08 | Accumulator diaphragm | 1 |
| 1101.27 | Valve o-ring | 6 |
Udor recommends replacing the diaphragms every 500 hours or at the end of each season, whichever comes first. If the oil in the pump's reservoir turns milky, a diaphragm has ruptured and spray mix is getting into the crankcase. Stop the pump and rebuild it right away.
Does this kit include valves?
No. It includes the valve o-rings but not the valve assemblies. Udor's complete kit, 8700.26CK, adds the valve assemblies, diaphragm bolts and washers. Call us at 602-371-1993 to order the complete kit.
What if the pump head is cracked or damaged?
A new diaphragm kit won't fix a damaged head. The Udor 6017.F2 pump head fits the Kappa-55.
Will it fit my Kappa pump?
This kit is for the Kappa-55. Other Kappa pumps use different kits. For example, the Kappa-30/40/50 uses the 8700.02, and the Kappa-33/43/53 (including the Kappa-43 GR) uses the 8700.45. Check the model on your pump's label, or call us.

MODEL: Udor 02-8700.26
$106.99
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