Planning compound quantities for a multi-valve campaign

1. Start with the valve schedule

How much sealant a campaign needs is an inventory question, not a single figure. Consumption per valve varies with cavity volume, seat design, valve size and pressure class. The valve schedule is therefore the base document for any order.

Before any compound is ordered, confirm the gates for the work. The valves must have injection fittings in good condition. The design and the service must suit injection, and the permit-to-work must allow the job. Where OEM documentation exists, consult it for limits and warranty terms. Not every installed valve can be treated in service, and the schedule should flag those early.

For each valve on the list, record:

1. Size, pressure class and body style.
2. Number and condition of injection fittings.
3. Service fluid and duty, such as dry gas or crude.
4. Observed condition: passing, stiff, seized, or leaking externally.
5. Date and product of the last treatment, if known.

The wider compound choices are covered in our valve sealant buying guide.

2. Condition mix drives the product mix

A campaign rarely meets one problem. Passing seats call for sealant, stiff or seized mechanisms call for cleaner first, and healthy valves take a lubricant top-up. A campaign order therefore contains three products, in proportions the condition list suggests.

One reference point comes from a risk-based valve integrity study of upstream and midstream sites, published by Valve World. It attributed 61% of failures to passing, 28% to seized valves, 6% to external leakage and 5% to other causes. Distributions vary by population, so treat these shares as a prompt, not a quota.

The mix moves quantities, not just products. Neglected valves consume cleaner before they accept sealant. A seized valve that stays seized after cleaning may need workshop attention or replacement, not more compound, and the plan should say so.

3. Contingency that earns its place

Carry contingency for losses you can name. Common losses include purging equipment lines, spillage at fittings, failed check valves in fittings, and repeat treatments where the first pass partly succeeds. Waste compound and cleaning materials also count against the issue.

Set the margin with the engineer who sizes the order, and write the reason beside it. A margin with a stated purpose can be defended in review; a round guess cannot. Repeat the comparison after the job, planned against used, so the next campaign starts wiser.

Holding extra compound is not a harmless buffer. Surplus invites over-injection, which can pack body cavities and affect valve movement, as explained in over-injection risks. Inject controlled amounts within equipment and fitting ratings, and watch the pressure response. Schedule contingency, such as weather and access windows, is separate: see planning live valve maintenance.

4. Packaging, storage and waste

Match pack sizes to the campaign, not to the catalogue. Order containers the team will open and finish. Compound left part-used in a store ages, and money tied up in spare containers is not a saving. Rotate stock so older containers are used first.

Separate the first commissioning fill from later maintenance top-ups when you order, because the products and the quantities differ. The distinction is set out in first fill versus maintenance top-up.

Plan waste handling with the site. Purge compound, spent containers and cleaning materials follow site waste rules and permits. Keep containers sealed and labelled, and record the batch used against each valve in the campaign log for the next order.

5. From estimate to a confirmed order

A desk estimate should end with a field check. Prove the compound and the planned quantity on one representative valve first, as described in sample and trial quantities. That result then anchors the campaign order.

A condition survey sharpens the list before you commit spend. Our valve survey service records condition, fittings and observed leak paths valve by valve.

Then send us the valve list by WhatsApp or the contact form. An engineer replies within 24 hours with a quantity plan for cleaner, lubricant and sealant. Request the product guide through an enquiry if you want the compound details first. We manufacture the compounds in-house, so pack sizes can follow the plan, and our teams run campaigns across the Middle East, Asia and Africa.