Frequently asked questions
Custom manifold block
What do I need to send you to get a quotation?
Your hydraulic circuit diagram, the bill of materials for the components and any specified requirements (overall dimensions, interfaces, specified drillings). No manufacturing drawing is needed. If you are missing some information, write "to be determined": our design office will come back to you with the relevant questions.
Do I need to provide a drawing of the block?
No. Numerhyd designs from the hydraulic circuit diagram alone: this is the core of our expertise.
How quickly will I receive a quotation?
Within 24 hours of receipt of your diagram, from our design office.
What is your standard lead time without Chronobloc?
It depends on the workshop's workload: allow 4 to 6 weeks in general. For urgent needs, the Chronobloc option guarantees design, manufacture and delivery in 1 week maximum, subject to eligibility.
How does a project run?
In five stages: sending the diagram; design study and 3D design using specialist CAD/CAM software; approval of the general arrangement drawing and the 3D model of the fitted block with your teams; CNC machining; inspection and delivery.
What materials do you manufacture in?
Aluminium, steel and cast iron, with permanent material stock.
What surface treatments do you offer?
Anodising, clear or coloured, on aluminium, and 10 to 20 µm electroless nickel for corrosion protection, particularly for marine and offshore applications.
What quantities do you manufacture?
From one-off blocks to small batches.
Is there a minimum order?
Yes, the minimum order is €75.
What size of block can you machine?
Up to 3 tonnes and 1,300 mm.
Chronobloc
What is the Chronobloc service?
The design, manufacture and delivery of a manifold block within a maximum of one week, for breakdown repair, maintenance or return to production. It applies to a new block, a repeat of an existing block or a small batch, subject to the project's eligibility.
How do I know if my project is eligible?
Send your diagram stating your deadline: we will tell you within 24 hours whether the project is eligible. Eligibility is stated in our quotation.
What happens if the lead time is not met?
The Chronobloc surcharges are not invoiced. Express shipping costs remain payable in addition.
What are the Chronobloc conditions?
The diagram, the bill of materials and the layout are finalised at the time of order; approval of the general arrangement drawing is given within less than half a day (if approval is returned later, the 1-week lead time restarts from the date approval is returned); the option is selected within a maximum of 3 days after the quotation is issued. Transport time is included in the final lead time, based on one day anywhere in mainland France; however, any delay caused by the carrier cannot be considered a failure to meet our commitment; outside France, the commitment applies to the ex works date.
Standard products
What standard products do you have in stock?
More than 300 references: Cetop 3, 5 and 7 multi-station subplates, junction, blanking, bridging, pressure test and adapter plates, and hollow screws.
How do I find the right reference?
The configurator builds the exact reference from your criteria and directs you to the right page of the catalogue. The PDF catalogue can also be downloaded.
Can you adapt a standard product?
Yes. We offer adaptations or customisations and quickly manufacture certain additional references.
Company and quality
Which sectors do you work in?
Machine tools, agriculture, civil engineering, rail, energy, nuclear, defence and marine.
How is quality inspected?
Each block undergoes an individual visual inspection and a sample-based dimensional inspection before shipment. Our customer non-conformity rate was 1% in 2025.
Is Numerhyd ISO 9001 certified?
No, Numerhyd does not hold a certification. Every block undergoes 100% visual inspection and sample-based dimensional inspection before shipment; our customer non-conformity rate was 1% in 2025.
Do you deliver abroad?
We work with manufacturers in France and elsewhere in Europe.
Which file formats do you accept?
PDF, DWG, STEP, images and Excel, up to 20 MB per file.