Custom & Special Purpose Fittings: When Standard Does Not Fit
Most hydraulic connections are covered by standard adapters and reducers. This guide covers when a custom or special purpose fitting is the right call instead, and how the drawing-led process works.
What counts as a “custom or special purpose” fitting?
A custom or special purpose fitting is any fitting that does not exist as a standard catalog part: a non-standard thread combination, a multi-port manifold block, a mixed-material or plated-finish requirement, or a build matched to an existing sample rather than a published spec. Like custom valves, it is drawing-led rather than picked off a shelf.
When standard adapters and reducers do not cover it
- The connection combines two thread standards that no standard adapter covers directly (for example, an uncommon BSP-to-metric or legacy OEM thread pairing).
- You need a multi-port manifold block or tee/cross fitting with a specific port layout, not a simple two-ended adapter.
- You are replacing an obsolete or discontinued fitting on older machinery and need a like-for-like match.
- The application needs a specific material, plating, or surface finish (for food-grade, marine, or corrosive environments) beyond standard carbon steel or stainless options.
- You need a non-standard length, bend angle, or body shape to fit an existing envelope.
Standard catalog fitting vs custom/special purpose
| Standard catalog fitting | Custom / special purpose fitting | |
|---|---|---|
| Basis | Published catalog spec | Your drawing, sample, or requirement |
| Lead time | Generally shorter | Longer, depends on complexity and quantity |
| Minimum order | Lower or none | Usually higher due to setup/tooling |
| Cost basis | Standard unit pricing | Priced per specification and complexity |
| Best for | Common thread and port combinations | Non-standard threads, manifolds, obsolete replacements, special finishes |
How the process works
Share a drawing, a sample of the existing fitting, or a detailed specification (thread standards on each end, port count and layout, material, pressure rating, finish). We confirm feasibility and the final specification with you before production starts.
The goal is the right fitting for a non-standard connection, whether you buy from us or not
We wrote this so you can decide whether your application genuinely needs a custom build before committing to the longer lead time and higher minimum it usually carries. If you do want it sourced, share your drawing, sample, or specification and we will confirm feasibility before production.
Frequently Asked Questions
Do I need a formal drawing to request a custom fitting?
A formal drawing helps but is not mandatory. A sample of the existing fitting, photos with key dimensions, or a detailed written specification can be enough to start, depending on complexity.
Can Velqor build a multi-port manifold block?
Yes, manifold and multi-port block fittings are a common custom request. Share the port count, layout, thread standards, and pressure rating and we will confirm feasibility.
Can Velqor replace an obsolete or discontinued fitting?
Yes. Send the existing fitting or a sample and we will confirm a matching or equivalent build.
What finishes are available beyond standard plating?
Options depend on the application; share your environment (food-grade, marine, corrosive, or other) and we will confirm what finish or material is appropriate.
What information do you need to quote a custom or special purpose fitting?
Thread standards on each end, port count and layout if applicable, material, pressure rating, finish, quantity, and a drawing or sample if available.
Sources consulted for technical accuracy: general hydraulic component sourcing and custom-manufacturing practices as documented by Parker Hannifin and Eaton technical resources.