Water Pump 4-chamber pump head - repair kit with bearing and diaphragm for WP7LPM and WP10LPM
- Head repair kit for the blue 4-chamber Water Pump WP7LPM (7 l/min) and WP10LPM (10.6 l/min) pumps. Contains the parts that wear most often: the bearing and the diaphragm.
Water Pump 4-chamber pump head is a repair kit for the blue 4-chamber pumps 4-chamber pump WP7LPM, 7 l/min, 1.38 bar and 4-chamber pump WP10LPM, 10.6 l/min, 3.1 bar. It contains the parts that wear most often in a diaphragm pump: the bearing and the diaphragm.

Which pumps
- Water Pump WP7LPM - 4 chambers, 7 l/min, 1.38 bar
- Water Pump WP10LPM - 4 chambers, 10.6 l/min, 3.1 bar
- does not fit the small 2-chamber pumps SWP38LPM and SWP31LPM

When to replace
- the pump runs noisily - a sign of a worn bearing
- the pump does not prime or reach pressure - possibly a punctured diaphragm
- water leaks from the head - possibly a damaged diaphragm or loose screws

Bearing
The drive bearing transfers the motor movement to the diaphragm. It wears over time, which you hear as louder running.

Diaphragm
The 4-chamber diaphragm pumps the water in the head. A cracked or worn diaphragm lowers pressure and flow or causes a leak.

Before repair
Disconnect the pump power and open a tap to relieve system pressure. After replacement, tighten the head screws evenly and check for leaks.
Photos and drawings

Other Water Pump products
- 4-chamber pump WP7LPM, 7 l/min, 1.38 bar - fits
- 4-chamber pump WP10LPM, 10.6 l/min, 3.1 bar - fits
- 1/2" NPT water strainer
- 0.75 l pressure accumulator tank
Technical data
| Parameter | Value |
|---|---|
| Type | pump head - repair kit |
| Wear parts | bearing, diaphragm |
| Fits | Water Pump WP7LPM, Water Pump WP10LPM (4-chamber) |
| Does not fit | 2-chamber pumps SWP38LPM, SWP31LPM |
Questions and answers
Which pumps does the kit fit?
The blue 4-chamber Water Pump WP7LPM and WP10LPM pumps.
Does it fit the small 2-chamber pumps?
No, it does not fit SWP38LPM and SWP31LPM.
What does the kit contain?
The parts that wear most often: the bearing and the diaphragm.
Manufacturer
Carbon Zorro Sp. z o.o., ul. Humańska 8, 02-789 Warsaw, Poland.













