Caleffi Water Pressure Regulator - 3/4 Inch DN20

This Caleffi water pressure regulator features a one-piece replaceable cartridge design housed in ...

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eBayWater Pressure Reducer with Gauge Caleffi 535051 3/4 Brass
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Product Information

Full details

The Caleffi Water Pressure Regulator (3/4 Inch DN20) is an essential component for residential and commercial plumbing systems, designed for property owners and installers seeking to protect downstream fixtures from high-pressure surges. It offers consistent pressure regulation and integrated debris filtration to extend the lifespan of your pipes and appliances, though users should note that initial installation requires basic plumbing knowledge and the use of proper sealing materials.

All features

Model Part NumberK12863-002
BrandCaleffi

Extended Product Information

FAQs

What is the primary function of the 0.51 mm filter?

The filter prevents sediment and debris from entering the internal mechanism of the regulator and your downstream plumbing fixtures.

Can I adjust the pressure after it is installed?

Yes, the unit is adjustable within a range of 1 to 6 bar using the adjustment screw located on the unit.

What does dezincification-free brass mean?

It means the brass alloy is resistant to the leaching of zinc, which prevents the material from becoming brittle and failing over time.

Is this regulator compatible with all 3/4 inch pipes?

It is compatible with standard 3/4 inch piping systems, provided the connections match the AG thread specifications.

How often should I clean the filter?

It is recommended to inspect and clean the filter at least once a year, or more frequently if you notice a drop in water pressure.

Does this product meet international standards?

Yes, the Caleffi regulator is certified according to EN 1567 standards for water pressure regulators.

Troubleshooting

Output pressure is higher than the setting

Check for internal seat damage or debris in the cartridge. Clean or replace the cartridge if necessary.

Water flow is restricted

The internal 0.51 mm filter is likely clogged. Remove the cartridge and clean the mesh screen thoroughly.

Leaking at the pipe connection

Ensure the screw fittings are tightened correctly and check that the thread sealant was applied properly.

Pros and Cons

Pros

  • Durable dezincification-resistant brass body
  • Modular cartridge simplifies maintenance
  • Effective protection against high-pressure spikes
  • Integrated filter reduces system wear
  • Compliant with EN 1567 safety standards

Cons

  • Requires professional plumbing skills for proper installation
  • Heavy-duty brass construction increases unit weight
  • Internal filter requires periodic inspection and cleaning

Setup, Compatibility & Care

For installation, ensure the flow direction arrow on the valve body aligns with the direction of the water flow. Use appropriate thread sealant on the screw fittings to prevent leaks. The unit is designed for 3/4 inch (DN20) piping systems. To maintain the device, periodically inspect the filter screen for buildup; the cartridge can be removed by unscrewing the housing cap. It is recommended to perform this check annually to ensure the filter remains clear of silt and mineral deposits. If the output pressure drifts significantly, verify the setting using the integrated preset indicator and adjust as necessary.

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