Black & White Facilities / Service brief
TMV Servicing and Testing
TMV work needs an outlet-level record of valve condition, performance and access, particularly where users or room functions have changed. Facilities teams should distinguish a mixed-temperature check from servicing and functional tests, keeping scalding protection connected to the wider water-hygiene controls without treating them as the same task.
Overview
Describe the reported behaviour and required outcome, including whether the instruction concerns repair, changed use or renewal. We use that information to establish the assessment and proposed work boundary.
Our full service catalogue, including every individual service, is available across every listed sector and location. For one site or several, we agree the scope, access and programme around the buildings concerned.
What the work can include
Identify valves and review their installation and manufacturer requirements before servicing accessible parts and performing applicable tests. Records link the valve and outlet to observations, results and remedial needs, distinguishing completed checks from inaccessible items.
Important system decisions
Mixing valves combine hot and cold supplies to regulate outlet temperature; they do not replace water-hygiene management. Match type and application to assessed scalding risk and suitable supply conditions. A mixed reading alone cannot establish the state of upstream distribution.
Specify servicing and functional checks, including the manufacturer's method, separately from a temperature spot reading. Where a valve fails the applicable criteria, assign remedial action and a decision on whether the outlet may remain in use.
Before we visit
Supply the register, outlet identifiers, prior results and water-risk assessment. Identify users, access provisions and who may restrict outlet use. Include manufacturer details and known changes to the incoming hot or cold supplies.
How the work proceeds
We agree the valve schedule and required tests, then complete the instructed service and checks. Link findings to individual outlets so failures and missed access receive specific action. Handover feeds results, repairs and future requirements into the maintenance programme.
The instruction states included activities, required evidence and how additional findings are approved. Retain the valve and location reference in service records so the next maintainer can follow the work completed.
What affects cost and timing
Numbers, valve types, accessibility, manufacturer tasks and parts influence pricing. A grouped programme needs all outlets identified and provision for repeat attendance. Consider temporary loss of washing facilities, particularly where alternatives are limited.
Provide working hours, occupied locations and activities affected by interruption. Agree access and sequence around those constraints, with finishing, verification and handover included in the quotation.
Sector applications
In Offices, coordinate valve work with occupation; in Education, fit access and interruptions around teaching. Healthcare and care requires user needs and specialist requirements to be established. Washing facilities and demand matter in Hospitality. The complete offering covers all sectors, based on each system's actual use.
Local coverage
TMV requirements can be discussed for Northumberland, Tyne and Wear, County Durham and Tees Valley. Our area includes Berwick-upon-Tweed, Alnwick, Morpeth, Hexham, Newcastle, Gateshead, Sunderland, Durham, Darlington, Hartlepool, Stockton-on-Tees and Middlesbrough; see all locations.
For estate-wide testing, retain building-specific valve records, access contacts and restrictions. Each premises needs its own clear instruction within the common programme.
Frequently asked questions
Is a TMV test the same as checking tap temperature?
A single tap reading is not the full service or functional assessment. Set tasks according to the valve type and how it is used.
Does fitting a TMV control legionella?
The valve controls mixed temperature and contributes to scald prevention. Separate hygiene monitoring and controls remain necessary for the hot and cold systems.
Do all valves need the same servicing interval?
Set intervals from manufacturer instructions, use, risk assessment and previous findings. One servicing frequency is not suitable for every application.
What should an estate valve register show?
Record identification, outlet, location, type, results and open actions. Missed access must remain visible so a completed visit does not conceal an untested valve.
Knowledge and guidance
Read thermostatic mixing valves explained for the valve's role and use the Knowledge Centre for further guidance. Official technical guidance provides the wider hot-and-cold-water control context.
Related services and your next step
Related scopes include Plumbing and Water and Water Hygiene and Legionella, with Planned Preventative Maintenance or Building Services Upgrades where ongoing tasks or alterations are needed. Consult services, maintenance and projects for the broader offering.
Share outlet records, valve information, locations and operating needs through Contact Black & White Facilities. Include current results and interruption limits so the assessment reflects the connected water system.
Discuss the scope
Tell us what needs attention.
Share the site, the issue and any access requirements so we can discuss the next step.