Diamond Plumb Limited
Plumbers
Diamond Plumb Limited
Palmerston St, Macclesfield
# Diamond Plumb Limited
Diamond Plumb Limited, based in Macclesfield, is a specialist RPZ (Reduced Pressure Zone) valve company with over 30 years of engineering expertise. RPZ valves are critical water safety devices that protect mains cold water supplies from backflow contamination—a legal requirement in UK water systems.
The company operates as a leading UK RPZ valve specialist, serving both domestic and commercial clients nationwide through a network of accredited engineers. Their core offering encompasses the complete lifecycle of RPZ valve management: supply and installation of approved replacement valves, comprehensive maintenance programmes, professional testing and certification, and expert repair services.
What distinguishes Diamond Plumb is their deep specialisation in this niche sector. Rather than offering general plumbing services, they focus exclusively on RPZ valve expertise, ensuring their engineers maintain the highest standards of knowledge and competency. They hold accreditation from major industry bodies and work with leading manufacturers including WRAS, Caleffi, Honeywell, Watts, and Reliance.
The business excels in responsiveness, typically arranging work at short notice or scheduling planned interventions to suit client requirements. This flexibility is particularly valuable given the mandatory 12-monthly testing requirement for all UK RPZ valves. Their established reputation and long operating history provide clients with confidence in reliability and regulatory compliance.
Diamond Plumb Limited, based in Macclesfield, is a specialist RPZ (Reduced Pressure Zone) valve company with over 30 years of engineering expertise. RPZ valves are critical water safety devices that protect mains cold water supplies from backflow contamination—a legal requirement in UK water systems.
The company operates as a leading UK RPZ valve specialist, serving both domestic and commercial clients nationwide through a network of accredited engineers. Their core offering encompasses the complete lifecycle of RPZ valve management: supply and installation of approved replacement valves, comprehensive maintenance programmes, professional testing and certification, and expert repair services.
What distinguishes Diamond Plumb is their deep specialisation in this niche sector. Rather than offering general plumbing services, they focus exclusively on RPZ valve expertise, ensuring their engineers maintain the highest standards of knowledge and competency. They hold accreditation from major industry bodies and work with leading manufacturers including WRAS, Caleffi, Honeywell, Watts, and Reliance.
The business excels in responsiveness, typically arranging work at short notice or scheduling planned interventions to suit client requirements. This flexibility is particularly valuable given the mandatory 12-monthly testing requirement for all UK RPZ valves. Their established reputation and long operating history provide clients with confidence in reliability and regulatory compliance.
Services offered
RPZ valve supply and installationRPZ valve testing and certificationRPZ valve repair servicesPlanned maintenance programmesEmergency call-out servicesReplacement valve provisionAccredited engineer consultancyWater safety inspections