Titan 0278240 Diaphragm Assembly
OEM Titan Pump Component
Titan 0278240 Diaphragm Assembly is a genuine OEM replacement diaphragm for compatible SprayTECH and Titan airless pumps. It is the flexible membrane that generates pumping pressure by flexing within the hydraulic chamber, and it replaces the older 0288771 and 0270201 diaphragm numbers.
Compatibility
Replace if pump pressure is lost, hydraulic oil appears milky or contaminated, or the diaphragm shows visible cracks. The pump head must not be removed unless the diaphragm is being replaced.
Titan Diaphragm Assembly Replacement
Titan 0278240 Diaphragm Assembly for ED655 Plus and AirCoat Pumps
Titan 0278240 is an OEM diaphragm assembly used in compatible SprayTECH and Titan diaphragm airless pumps. The diaphragm is the critical flexible membrane that separates the hydraulic oil chamber from the paint chamber and generates the pressure required to pump and atomize coating material. This assembly replaces the older 0288771 white diaphragm and 0270201 red diaphragm numbers.
| Detail | Technical / Commercial Information |
|---|---|
| Product Overview | OEM diaphragm assembly that attaches to the ring-diaphragm. Includes diaphragm spring, oval spacer, membrane, and nut. Made of plastic and metal. |
| Function | The diaphragm flexes within the hydraulic chamber to generate the pressure necessary to pump and atomize paint. It also seals the hydraulic oil from the paint chamber. A blown diaphragm allows paint or water into the hydraulic oil, causing loss of pressure. |
| Manual-Documented Application | Titan ED 655 Plus. Bedford Precision quick-reference lists 0278240 as the Diaphragm Assembly. The ED655 owner's manual references a diaphragm assembly in the pump components. |
| Catalog-Listed Applications | SprayTECH ED655, 300 Multi Finish, AirCoat; Titan AirCoat Air-Assisted, AirCoat Spray System; Wagner Wave Series pumps including 404+, 425, 505, 525, 650, 655, 830-838, 1050, 1150. Confirm exact model in the parts diagram. |
| Replacement Indicators | Loss of pump pressure, hydraulic oil appearing milky or contaminated (indicating paint or water past the diaphragm), or visible hairline cracks in the diaphragm. |
| Related Parts Commonly Serviced Together | Diaphragm ring 0270494, hydraulic oil, and pump head seals. Inspect the ring and hydraulic chamber during replacement. |
| Installation Note | Do not remove the pump head unless replacing the diaphragm. Once the head is removed, the diaphragm must be replaced. The head bolts press grooves into a new blank diaphragm to create the seal. Clean the hydraulic chamber thoroughly if contamination is present. |
| Target Users / Markets | Painting contractors, rental fleets, maintenance crews, and repair shops running compatible SprayTECH, Titan, and Wagner diaphragm pumps. |
| Commercial Benefits | Restores proper pump pressure, prevents hydraulic oil contamination, and extends the service life of the pump assembly. |
The 0278240 Diaphragm Assembly is a critical pump component, not a complete pump assembly. Before ordering, confirm the part number in the machine parts diagram. A blown diaphragm can allow paint into the hydraulic oil, causing pressure loss and potential damage to internal components.
Frequently Asked Questions
Contractor-focused answers for confirming fitment and service application.
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