Replacement Valves for Lines Already Installed
Replacing one valve in a live network is a different problem from buying a new project package. The new valve has to fit the flanges, the chamber and the operating gear that are already there.
How We Match an Existing Valve
Each stage below lists the problem buyers hit and what we do about it.
Identification
Problem: The nameplate is unreadable and the original maker no longer exists.
Photographs of the valve, the flanges and the chamber usually identify the pattern.
Dimensional Check
Problem: A replacement arrives that will not fit the space between flanges.
We confirm face-to-face length, flange drilling and stem height before quoting.
Duty Confirmation
Problem: The old valve failed because it was wrong for the medium.
We ask what failed and why, so the replacement is not a repeat of the same mistake.
Drive Matching
Problem: Existing operating gear or extension spindles no longer fit.
Drive interface and orientation are matched so existing gear can be reused where possible.
Single Unit Supply
Problem: Suppliers will not quote below project quantities.
Single valves and small quantities are quoted like any other order.
Fit Verification
Problem: The valve is only checked once the line is drained.
Dimensions are confirmed in writing before despatch so the shutdown window holds.
Outcomes of This Route
- A replacement that bolts into the existing flanges
- A seat choice that addresses why the last valve failed
- Existing operating gear reused where the interface allows
- Single unit quantities quoted without a project minimum
Information To Send Us
- Photographs of the valve in place including the nameplate
- Face-to-face length and flange bolt circle if you can measure them
- What the line carries and at what pressure
- How the valve is operated and by what gear
- The shutdown window you have to work in
Replacement and Retrofit FAQ
Can you match a valve from another manufacturer?
In most cases yes, if the face-to-face length and flange drilling follow a recognised standard. Photographs and two measurements are usually enough.
Will you supply just one valve?
Yes. Single valve orders are quoted the same way as project quantities.
How long does a replacement take to make?
It depends on the size and whether the pattern is a standing model. Send the details and we will confirm a realistic date rather than a hopeful one.
Can you tell me why the old valve failed?
Often yes, from photographs of the seat and disc. Seat attack, grit damage and over-torqued installation leave different marks.
Send Photographs of the Valve
Two measurements and a few photographs are usually enough to identify a replacement.