The Davey XP Series pressure pump (XP500, XP700 and XP900 codes, including H versions) takes a mechanical seal for a 1/2″ shaft with carbon / ceramic faces. This CapacitorsNZ seal replaces Davey 48802SP and Onga 702789, and the same seal is listed for the Onga Leisuretime LTP400, LTP550 and LTP750. Measure the shaft or compare your old seal before fitting.
How to tell you have a Davey XP Series
The XP Series is a single-phase Davey pressure pump listed for well use. The model code on the label normally starts with XP followed by a number: XP500, XP700 or XP900, sometimes with an H suffix (XP500H, XP700H, XP900H) and sometimes printed with a space, such as XP 700. All of those codes are listed against this seal.
Davey 48802SP and Onga 702789: part numbers this seal replaces
The Davey part number for the XP Series seal is 48802SP, and this seal also replaces Onga 702789. If either number is on your old packet or parts list, this is the matching replacement. Like most pump mechanical seals it is a two-part seal: a spring-loaded rotating head on the shaft and a stationary seat pressed into the pump body. It is also sold on its own as our 1/2″ carbon / ceramic pump seal.
Other pumps that use the Davey XP Series seal
This seal is also listed for the Onga Leisuretime LTP400, Onga Leisuretime LTP550, Onga Leisuretime LTP750 and Onga Pantera PPP550.
It is also listed for these pumps, which don’t have their own page yet: Davey 105, Davey 135, Davey Aqua-mate 350 and 450, Davey Celsior bath pumps, Davey HP Series, Davey Power Chief 85, Davey XA85, XA105 and XA135, Davey XB 73101 to 401, Davey XD Series, Davey XF Series, Davey XS Series spa pumps, Onga 200 Series spa pumps, Onga 400 Series, Onga 4145-1, Onga BR463-465 pool pumps, Onga JJ400, Onga PPP750-2, and Wallace Hydrojet 35, 50 and 70.
Signs the XP Series seal has failed
Change the seal as soon as it leaks. Water running along the shaft is a common way motor bearings get ruined.
- Water dripping from the gap between the pump end and the motor.
- The pressure pump cycling on and off with every tap closed, as a leak at the seal lets the pressure drop (a faulty check valve or pressure tank can cause this too).
- A damp patch or rust streak on the base under the motor.
Fitting notes for the XP Series seal
Turn the power off at the switchboard and relieve the pressure before opening the pump. Always replace both halves of the seal together; a new rotating head against a worn seat is likely to leak. Keep the polished faces clean and dry, and use a little soapy water rather than grease to ease the rubber parts into place. Press the stationary seat in squarely by hand, then prime the pump before running it, as running a mechanical seal dry can overheat and crack the faces.
Before you order
Check the old part before fitting: match the size of your old seal.
Capacitor details for this pump: Davey XP Series capacitor guide.