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Injection Valves Specification Example for Off-Road Bikes: All-Weather Version

Source:Diesel Engine Parts / Time:2026-09-18

Injection Valves Specification Example for Off-Road Bikes: All-Weather Version

This is a worked specification for injection valves in a all-weather version programme. It is the document we would send a buyer who asks what exactly they are getting: the material, the dimensions that are actually controlled, the finish, and the checks that happen before anything is packed.

The all-weather version version exists because the duty cycle on off-road bikes is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually reorders that did not match the approved sample.

Injection Valves

Example specification

ItemInjection Valves
ApplicationOff-Road Bikes
VersionAll-Weather Version
Base materialCarbon Steel
Controlled dimensions6 key dimensions, recorded per lot
Tolerance band±0.2 mm
Finishpowder coated
MOQ3,000 pieces per specification
Sampling7 working days, 3 days per revision
ComplianceIATF 16949

How the example is built up

  1. Start from the duty cycle, not from the catalogue photograph.
  2. Fix the base material in writing — Carbon Steel, in this example.
  3. List the dimensions that are actually controlled and the tolerance on each.
  4. Name the finish and what it has to survive.
  5. State the inspection level and who pays when a lot fails.

Injection Valves example

Processes involved

  • die casting
  • sintering
  • surface grinding
  • anodising
  • heat treatment
  • robot welding

Where this example applies

Programmes that run all-weather version most often specify this build for off-road bikes. Related applications include utility trailers, rental motorcycles, three-wheelers, city buses, racing teams.

Checks before packing

  • Dimensional report against the approved drawing.
  • AQL 4.0 sampling on the finished lot.
  • Finish inspection under agreed lighting.
  • Carton drop test on the first lot of a new packing specification.

Questions buyers ask

How long does sampling take?

Samples leave the factory in 7 working days, and each revision round adds about 3 days once you have seen the first piece.

What testing is included?

Standard lots ship with dimensional and hardness reports. IATF 16949 documentation is issued with the shipment when your market requires it.

What is the minimum order quantity?

The standard MOQ is 3000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.

What happens if a lot fails inspection?

The lot is re-inspected against the golden sample, and replacement pieces ship on the next available booking at our cost.

Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.

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