Water Valve Maintenance Program: Exercise to Replace

A valve that will not close is usually discovered at the worst moment, during a main break or an emergency shutdown when the neighborhood is already losing service. Valves seize from disuse, corrosion and debris, so the only defense is a program that exercises them, scores their condition and plans replacement before they fail. This guide covers exercising frequencies, scoring and replacement planning, and how asset management software keeps the service history in one place.

Water and Wastewater / Distribution

Water Valve Maintenance Program: From Exercise to Replacement

Exercise valves on a risk-based schedule, score their condition and use service history to decide what to repair, replace or defer.

1Operates freely

2Minor stiffness

3Leaks or hard to turn

4Partial operation

5Inoperable

Set Exercise Frequency by Risk

Consequence of failure / valve size

Large transmission valves

Distribution valves

Service and dead-end valves

Critical or isolation for hospitals and major users

Most frequent

Frequent

Regular

Typical network valves

Regular

Planned cycle

Low consequence valves

Planned cycle

Intervals are set by each utility based on policy, resources and valve findings. Start with the most critical valves, then work outward.

A Repeatable Exercising Procedure

Confirm the valve location, size, type and direction to close from the record
Operate the valve fully, counting turns and noting torque or effort
Compare turns with the expected count to spot debris or partial closure
Open fully, then back off if the manufacturer procedure calls for it
Record condition, access problems and any leak at the stem or packing
Create a repair order for any valve that will not operate or is buried

Condition Score and Action

Score	What crews find	Planned action
1	Operates freely, accessible	Keep on regular exercise cycle
2	Minor stiffness or extra turns	Shorten interval, monitor
3	Leaking packing, hard to operate, box damaged	Repair and re-test
4	Operates partially or valve will not seal	Plan replacement, add to risk list
5	Inoperable or inaccessible	Prioritize repair or replacement

Give Your Crews a Valve Program They Can Follow in the Field

Load valve assets, create exercise routes and record turns, torque and condition from a phone or tablet.

Get Started Book a Demo

Planning Replacement With Evidence

Without service history

Replacement driven by failures
No view of how many valves are at risk
Budget requests rely on age alone
Crews rediscover the same problems

With scored service history

Replacement ranked by condition and consequence
Clear count of poor-condition valves
Budget requests supported by findings and repair cost
Crews see past issues before arriving

Rank each candidate by consequence of failure and condition score. A poor valve on a critical main goes ahead of a poor valve on a quiet dead end.

What to Capture on Every Visit

Valve ID and location

Turns to close and open

Torque or effort

Condition score

Photos of box and surface

Repairs performed

Customers affected if closed

Next exercise date

KPIs for the Valve Program

Valves exercisedagainst plan

Inoperable valvesfound and fixed

Repair backlogby age

Critical valve coverageexercised within target

Build the Valve Inventory First

Valve ID, size, type and manufacturer where known
Location, street intersection and map reference
Direction to close and number of turns expected
Pipe material, installation year and pressure zone
Customers or areas isolated when the valve is closed
Condition score and date of last exercise

A valve you cannot find cannot be exercised. Reconcile paper maps, GIS data and crew knowledge, then add missing valves as they are discovered. Even an incomplete inventory is useful when it is updated on every visit.

Crew and Equipment Setup

Field equipment

Valve exerciser or manual operator suited to valve size
Torque and turn counting method
Tools to clean and open valve boxes
Tablet or phone for records and photos

Crew practices

Plan routes by zone to cut travel time
Work with traffic control rules where required
Stop if torque suggests the valve may break
Record any valve box in need of repair

Common Valve Problems and What They Suggest

Finding	Possible cause	Likely action
Valve box full of soil or debris	Settled or damaged box	Clean, repair or replace the box
Higher effort than normal	Corrosion or sediment buildup	Exercise again, shorten interval, monitor
Fewer turns than expected	Debris, partial closure or damage	Investigate and plan repair
Leak at stem or packing	Worn seals	Repair packing or replace the valve
Valve will not move	Seized or broken internals	Priority repair or replacement
Valve not found	Paved over or missing record	Search, correct the map and raise a work order

Decide Between Repair and Replacement

Situation	Typical lean	Why
Low consequence valve with minor stem leak	Repair	Cost is low and function remains
Critical isolation valve that no longer seals	Replace	Reliability matters more than a temporary fix
Several repairs in a short period	Replace	Repeat cost suggests end of useful life
Valve scheduled in an upcoming main replacement	Defer or coordinate	Avoid duplicate work
Inaccessible valve with unknown condition	Investigate first	Locate and assess before committing budget

Plan Shutdowns So Customers Are Not Surprised

Notify affected customers and critical users before planned closures
Avoid peak demand periods where possible
Confirm which valves must be operated and in what order
Keep a record of any customers affected and how long
Restore service gradually to reduce pressure surges

Exercising is a good time to confirm that your isolation plan works, because you learn which valves and areas affect the most customers before an emergency forces the issue.

Review the Program Each Year

Compare planned and completed exercises by zone
List valves that moved to a worse condition score
Review repair backlog age and critical valves affected
Adjust exercise frequency based on findings
Update replacement forecasts and budget requests

Why Valves Fail When You Need Them

Valves are unusual assets because they may sit untouched for years and then be required to work instantly. That long idle period is the main reason they fail.

Corrosion and mineral buildup lock moving parts in place
Sediment collects in the seat and prevents full closure
Operating nuts and stems wear or break under high torque
Valve boxes fill with soil, shift or get paved over
Records are wrong, so crews cannot find the valve quickly
Packing and seals leak after long service

Regular exercising breaks up buildup, shows condition early and keeps records accurate. It is one of the lowest cost ways to reduce emergency risk.

Valve Types and Maintenance Notes

Valve type	Typical use	Maintenance notes
Gate valve	Mainline and branch isolation	Count turns carefully, watch for broken stems and sediment
Butterfly valve	Large mains and plant piping	Check operator condition, seat leakage and torque
Plug or ball valve	Service connections and smaller lines	Inspect for leaks and difficulty turning
Check valve	Prevents reverse flow	Test for sticking and slamming noise
Pressure reducing valve	Controls zone pressure	Verify settings, strainer and pilot condition
Air release valve	Releases trapped air at high points	Clean, inspect and confirm vent function

Valve Records Worth Keeping

Original installation date and manufacturer when known
Every exercise date, turns counted and effort recorded
Photos of the valve box before and after repair
Repairs, parts replaced and cost
Any customer outages or shutdowns linked to the valve
Notes on access issues, traffic control and nearby utilities

These records make later decisions faster. A crew arriving at a valve can see what the last team found instead of rediscovering the same problem.

Connect Maps, GIS and Work Orders

Use the same valve ID in GIS, field maps and maintenance records
Update coordinates when crews find a valve in a different place
Show valves due for exercise by zone and priority
Link replacement candidates to the planned main or paving projects
Report areas where many valves are missing, buried or inoperable

Staffing and Budgeting Approaches

Approach	Best fit	Consideration
Dedicated valve crew	Large systems with many valves	Highest throughput and consistent records
Shared crew in slow season	Smaller utilities	Needs scheduling discipline
Contracted exercising	Backlog or limited equipment	Require records in your format
Zone-by-zone campaign	Systems starting from scratch	Builds data and condition scores steadily

Safety and Pressure Considerations

Follow traffic control and excavation safety practices at every valve box
Do not force a valve past the torque recommended for its size and type
Operate valves slowly to limit pressure surges
Confirm the closing direction before turning
Be prepared for discolored water after operation and inform customers where needed

Emergency Isolation Readiness

When a main breaks, crews need to know which valves isolate the break and how many customers are affected. Prepare isolation plans for critical areas, keep valve maps accessible on mobile devices and confirm that key valves have been exercised recently. After each event, record which valves worked, which did not and what changes are needed. This turns every emergency into data for the next maintenance cycle.

Common Mistakes to Avoid

Exercising only easy valves and skipping hard-to-reach ones
Recording only that a valve was exercised, not its condition
Ignoring valves that repeatedly need extra effort
Replacing valves by age alone
Treating missing valves as a mapping issue instead of a maintenance task
Waiting for a main break to learn which valves do not work

How Oxmaint Supports a Valve Program

Oxmaint can store each valve as an asset with location, size, type and condition score, schedule recurring exercise routes and record turns, torque, photos and repairs from a mobile device. Reports highlight valves that have not been exercised, valves scoring 4 or 5 and repair backlogs, giving planners the evidence needed for replacement budgets.

Exercise work orders grouped by zone or route
Condition score history for every valve
Repair work orders linked to the original finding
Dashboards for coverage, backlog and critical valves

Crews also benefit. They arrive with the last findings already in hand and can leave updated notes for the next visit.

Operational Impact of a Reliable Valve Program

Faster isolation during main breaks, with fewer customers affected
Fewer surprises when a valve is needed in an emergency
More accurate maps and valve records
Replacement budgets supported by condition data
Less rework because crews can see previous findings

Roll the Program Out in Phases

Phase	Focus	Outcome
Phase 1	Critical isolation valves and large mains	Highest risk valves are exercised and scored
Phase 2	Distribution valves by zone	Accurate records and condition scores across the network
Phase 3	Service and low-consequence valves	Planned cycle covering the remaining system

Keep Valve Data Reliable

Require turns and condition score before closing an exercise work order
Use consistent condition definitions across crews
Review unusual entries each week
Correct location errors as soon as they are found
Audit a sample of records against field visits each year

Turning Findings Into a Replacement Forecast

Each exercise visit adds one more data point. After a full cycle, group valves by condition score, size and consequence of failure, then estimate how many will need replacement each year. Combine that list with paving, main replacement and development plans so valve work is coordinated with other projects instead of opening the same street twice. Share the forecast with finance early, with condition photos and repair history attached, so the budget request rests on field evidence.

Frequently Asked Questions

How often should water valves be exercised?

Frequency should reflect valve size, criticality and past findings. Most utilities start with critical valves and extend outward.

What is a good way to prioritize valve replacement?

Combine condition score with consequence of failure. Service history in Oxmaint makes that ranking repeatable.

Should every valve be scored?

Yes, whenever it is operated. Even a simple one-to-five score builds a trend over time.

What if a valve cannot be found?

Log it as a work order, note the last known location and update records once located or confirmed lost.

Can we see a valve exercising workflow?

You can book a demo to review exercise routes and condition scoring.

Know Which Valves Will Work Before the Emergency

Exercise, score and plan replacement with a program backed by complete service history.