Summary

Francis Pegler Thermostatic Cartridge for Komo, Mimo, Tidal, Oka, Chara and Mizar Shower Valves - Compatible Spare.

This Francis Pegler cartridge spare is used in the following Pegler shower valves:

Peglar Tidal Thermostatic Shower with Diverter 4S4022

Peglar Komo & Mimo Concealed Thermostatic Showers

Peglar Oka, Chara, Mizar Concealed Thermosatic Shower Mixers 4S4032, 4S4042, 4S4052

Cartridge Measurements:
Total Length (excluding wax thermostat): 96mm
Diameter at Thread: 41.7mm
Top Spline Diameter: 7.6mm
Top Spline Teeth / Notches: 20
Stop Ring Spline Diameter: 20mm
Diameter at Top O'ring: 40.5mm
Diameter at Middle O'ring: 40mm
Diameter at Bottom O'ring: 39.6mm

Frequently Asked Questions: Francis Pegler Thermostatic Cartridge

Question: How does the Francis Pegler shower thermostatic cartridge work?

Answer: Hot and cold water from the feeds enter the shower valve. It then passes through the Francis Pegler thermostatic cartridge where the wax thermo-core mixes hot and cold water together to produce the temperature set by the shower user.

Question: What are the symptoms that tell the Francis Pegler temperature control cartridge has turned faulty?

Answer: There can be a number of signals that point to a worn-out Francis Pegler thermostatic cartridge which includes:

• The showerhead is dripping even though the shower is turned off.
• Water is seeping out of the temperature control handle.
• Difficulty or failure to control water temperature through the shower valve handle.
• Insufficient water flow rate.
• The temperature control handle becomes stiff to turn.

If the problem is cartridge-related, replacing that shower valve part may resolve the said issues.

Question: Why do shower cartridges like the Francis Pegler thermostatic cartridge fail?

Answer: Among the reasons why the Francis Pegler thermostatic cartridge may fail are:

• Limescale hardens and clogs the cartridge’s gauze filters which stop water from entering the cartridge barrel. This can also be a reason for handles to become tough to turn.
• Calcified dirt and minerals inside the cartridge act as an abrasive that scratches the thermo-core’s piston as it moves up and down to regulate water temperature.
• The rubber seals or O-rings of the cartridge can fracture or harden over time.
• As with all things, wear and tear affects the cartridge and its performance through years of use.

Question: Is greasing the O-rings of a new cartridge a necessity?

Answer: Yes, silicone grease is an important element in shower repair. Applying grease on the seals will help the Francis Pegler thermostatic cartridge replacement squeeze and seal in the shower valve. It will also serve as a layer of protection that preserves the life of the rubber components preventing early deterioration.

Not just any other lubricant can be used for shower repair purposes. Oil-based lubricants can adversely affect the O-rings. Use only silicone-based and heat resistant grease fit for plumbing applications. The plumber’s grease we supply can be seen at the bottom of the page.

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Weekend messages will be responded to on Monday.

All shower repair supplies will be despatched on the same working day when the purchase is made before 3 in the afternoon.