Four-Port Valve Replacements

Night Work & BMS Collaboration with Specialist Contracting

Expert mechanical technicians for the duration of 2-3 weeks. The technicians worked nights with the partnering BMS contractors.

Fan Coil Valve Replacement Schedule

1. Isolate chilled and hot water supply to localised floor. (opening bypass if available)
2. Remove ceiling tiles within close proximity to fan coils.
3. Local isolation of system shut off valves in close proximity (1m) of FCU units.
4. Vented pressure via balancing binder points.
5. Drain each section and FCU via a hose into localised cylinder.
6. Remove stainless steel flexible hoses and replace with new on-site stocked items.
7. Install new connection fittings and 4 port valves (free issued by BMS contractor) (clean each valve with inhibitor prior to installation)
8. Backfill each section and test for leakages.
9. Open valves and leave system ready for actuator connection by BMS contractor.

Works location – Cheltenham
Works duration – 2-3 weeks.
Night work.

*Four way port valve used as part of the 600 valves replaced in Cheltenham*

Abbreviations

HVAC – Heating, Ventiliation and Air Conditioning, PLT – Pressure Leak Test, PRV – Pressure Relief Valve, PPM – Planned Preventative Maintenance, OFN – Oxygen Free Nitrogen, AHU – Air Handling Unit, GWP – Global Warming Potential, VRF – Variable Refrigerant Flow, VRV – Variable Refrigerant Volume, ACU – Air Conditioning Unit, FCU – Fan Coil Unit, AC – Air Conditioning, HP – High Pressure, LP – Low Pressure