Non-Return Valve (Check Valve) Maintenance Checklist
A maintenance checklist for non-return valves covering back-flow prevention verification, seat inspection, hinge condition, and operation testing — for heating, cooling, and water supply systems.
Also available as editable Excel and Word — with asset, sign-off and findings columns.
What is a nrv maintenance checklist?
A non-return valve (check valve) maintenance checklist is a structured list of the 8 preventive maintenance tasks — covering visual, functional and record-keeping checks — that keep a non-return valve (check valve) running safely and reliably. It groups routine checks by frequency, from daily inspections to annual servicing, so FM teams and building engineers can plan and evidence preventive maintenance.
Core nrv checks
- Inspect the valve body for leaks
- Verify the valve prevents backflow when flow stops
- Record valve condition and any maintenance performed
What is a non-return valve (check valve)?
A non-return valve (NRV) or check valve allows water to flow in one direction only, preventing backflow that could cause system problems or contamination. NRVs are installed on pump discharge lines, between systems at different pressures, on boiler and chiller connections, and as part of backflow prevention arrangements. They are passive devices that rely on flow direction and gravity, but they still require maintenance to ensure reliable operation.
This checklist is one of 27 in our plumbing and water system maintenance checklists, covering pressurisation units, booster sets, storage tanks, TMVs and water treatment — pressure, hygiene and legionella control.
Typical NRV maintenance checklist
A practical starting point for planned preventive maintenance. Always refer to the manufacturer's O&M manual and site-specific requirements.
Visual Checks
- Inspect the valve body for leaks
- Check the valve is installed in the correct flow direction
- Open and inspect the valve internals where accessible (swing check valves)
- Check the hinge pin, disc, and seat for wear or corrosion
Functional Checks
- Verify the valve prevents backflow when flow stops
- Listen for chattering or banging during normal operation (indicates problems)
- Verify the valve is not seized open or closed
Record Keeping
- Record valve condition and any maintenance performed
Download the free NRV maintenance checklist PDF
Get all 8 tasks as a printable PDF — free, no signup needed. Keep a copy in the plant room, attach it to work orders, or share it with your maintenance contractor.
The PDF is free and needs nothing. The Excel and Word versions add asset details, sign-off and findings columns so you can record the work as you do it — we ask for an email address for those.
Typical maintenance frequency
Suggested intervals for non-return valve (check valve) maintenance. Actual frequencies should follow manufacturer guidance and site-specific risk assessments.
Quarterly
- •Listen for chattering or banging during normal operation
- •Check for leaks at high-criticality locations (pump discharge, boiler connections)
Annually
- •Functional check of backflow prevention
- •Internal inspection where accessible
- •Verify correct flow direction marking
Common faults and issues
Issues to be aware of when maintaining non-return valve (check valve) equipment.
Safety and compliance notes
Key safety considerations for non-return valve (check valve) maintenance. This is general guidance only — always follow OEM instructions, statutory requirements, and your organisation's safe systems of work.
Reference standards and frameworks
- United Kingdom
- HSE ACoP L8 and HSG274 for water hygiene
- North America
- ASHRAE Standard 188 (legionellosis risk management)
- Middle East
- Dubai Municipality's Green Building Regulations require commissioning to CIBSE Commissioning Code W (water distribution)
Frameworks commonly referenced when planning nrv maintenance programmes. Always confirm the requirements that apply to your site and jurisdiction.
Managing NRV documentation with PM Assist
PM Assist helps FM and building operations teams search their O&M manuals and building drawings in seconds. Upload your non-return valve (check valve) documentation and ask questions like “What are the legionella control requirements?” or “When was the last water quality test?” — and get source-cited answers instantly.
The checklist tells you what to check. The manual tells you the numbers.
Ask a nrv manual a question and get the answer back with the page it came from. No signup, and you can drop in your own PDF instead of the sample.
“What are the legionella control requirements?”Runs against a sample chiller manual so you can see the shape of the answer — then try it on one of yours.
Take this checklist with you
Download the branded PDF, generate a custom version for your asset, or run AI search across all your building documentation.
Related free tools
Further reading on nrv maintenance
Compliance & CAFM
Run non-return valve maintenance in PM Assist
This checklist is also a planned maintenance programme in PM Assist, included in every paid plan alongside the compliance register and mobile inspections.
- Add a non-return valve to a building's asset register and this maintenance programme is created for you, with each task on its frequency in the planner.
- Backflow Prevention Device Test is tracked on the compliance register, with the date last done, the date next due and the certificate.
- Contractors can be given a login to see their jobs and upload certificates.
Frequently asked questions
How do I know if a non-return valve has failed?
What type of NRV should I use?
Why does my NRV make a banging noise?
Manage your building documentation with AI
PM Assist gives FM teams instant access to O&M manuals, drawings, and maintenance knowledge — all searchable with AI.
- Upload and organise building documentation
- AI-powered search across all your manuals
- Source-cited answers for maintenance queries
- Team collaboration and access control
- No credit card required to start