Fuel supply drawings often focus on the feed line, while the return line is left vague. For a diesel generator with a day tank or remote bulk tank, the return arrangement should be settled before installation starts.
What buyers should know first
The return line affects tank connection, fuel temperature, pipe sizing, and responsibility between the generator supplier and site contractor. A clear scope prevents late changes around the tank skid or plant room.
In practice
If the buyer asks Yangzhou Tesla Power Equipment Co., Ltd. for a packaged diesel generator set, the RFQ should explain whether the day tank is supplied with the generator or by the local fuel system contractor.
| Item to confirm | Why it matters | What to send with the RFQ |
|---|---|---|
| Return destination | Prevents unsafe or impractical fuel routing | Day tank drawing, bulk tank layout, and connection point |
| Pipe distance | Affects routing, supports, and installation responsibility | Approximate pipe length, elevation, and room layout |
| Fuel temperature | Return fuel can warm a small tank during long running | Expected running hours and tank volume |
Before requesting a quotation
Share the load list, voltage and frequency, installation location, duty rating, enclosure requirement, control interface, and any consultant drawings. Yangzhou Tesla Power Equipment Co., Ltd. can then check the diesel generator set scope against the project assumptions instead of quoting from a single kW or kVA number.
- Define whether fuel returns to the day tank, bulk tank, or engine-mounted connection.
- Confirm who supplies pipes, valves, flexible hoses, and tank fittings.
- Check access for inspection, venting, and leakage control around the tank.
- Ask for a simple fuel system sketch before approving the quotation.
Related product and project pages
For a matching equipment reference, review <a href="https://www.tesladieselgeneratorset.com/products/factory-priced-1mw-cummins-engine-qsk38-g12-1500kva-1200kw-generator-with-ats-low-fuel-consumption-230v-480v-rated-voltage/">this diesel generator set product page</a>. For wider project planning, compare it with <a href="https://www.tesladieselgeneratorset.com/diesel-generator-fuel-polishing-storage-checks-standby-sites/">this technical guide</a> before sending the RFQ.
Common questions
Can the return line be decided by the installer later?
It can, but the generator quotation should still define connection points and responsibility to avoid site disputes.
Does a small day tank need special attention?
Yes. Long running can increase fuel temperature, so tank volume and return routing should be checked.
Who decides pipe size?
The installer or fuel system designer should confirm final pipe size using engine fuel data and site distance.
What documents help the supplier?
A tank layout, generator position, pipe route, and expected running profile are useful for quotation review.