Pontcanna Brassworks
What is included
- ✓Inlet and dynamic pressure gauge testing
- ✓Removal of failed brass or plastic PRV units
- ✓Installation of WRAS-approved brass body reducing valves
- ✓Integral stainless steel strainer cleaning
- ✓Dial-in pressure calibration between 1.5 and 6 bar
- ✓Hammer shock assessment across draw-off points
Request an Engineering Visit or Part Inspection
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Why Work With Pontcanna Brassworks
Protects domestic boilers and cylinders
Prevents relief valves from lifting and stops internal heat exchanger damage caused by high line pressure.
Quiet pipework operation
Eliminates hydraulic shock and resonant shudder in copper pipes when fast-closing valves shut.
Standardised downstream flow
Maintains an even flow rate across mixer showers even when taps elsewhere in the property open.
How We Carry Out Work
- 1Take baseline pressure readingsWe fit digital and analogue test gauges to external draw-off points to record static and dynamic incoming pressure.
- 2Drain line and cut out failed unitThe supply is shut down at the boundary or internal stopcock, allowing clean removal of the compromised valve.
- 3Solder or press new brass PRVWe mount the new valve with proper flow orientation, using compression or press-fit copper unions.
- 4Calibrate and seal adjustment screwWe set the downstream pressure to 3.0 or 3.5 bar, verify unvented cylinder safety valves, and log the test data.
Questions about this service
How do I know my pressure reducing valve has failed?
Common signs include vibrating pipes when taps turn off, continuous dripping from the unvented cylinder tundish, or erratic shower flow.
What is the recommended household water pressure in Cardiff?
Most residential systems and brassware manufacturers specify between 2.5 and 3.5 bar for safe, quiet operation.
Does the replacement valve include a pressure gauge?
Yes, we install valves fitted with a direct dial gauge so you can check downstream line pressure at any time.
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What Cardiff Clients Say
Courier handed over the heavy cardboard carton at the porch without any crushed corners.
David P., Cardiff, GBKept in the garage workbench drawer.
Rhys T., Cardiff, GBOur technician fitted the brass manifold under the kitchen sink and tested it immediately. The invoice was settled by direct bank transfer once the pressure gauge showed stable flow. No leaks have appeared across six months of regular use.
Eleri M., Cardiff, GBBook an Engineer for Your Pipework or Brassware
Send us your fault details or call directly. We review your request and confirm a fixed site arrival window within two business hours.