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Pump Delivery Pipe Size Buying Guide
Verified 2026-09-05 · By VUKAR Editorial Team
Compare the inside width at the same flow. Then have the installer check pressure, joints, and the whole route.
- These examples are Ashirvad Agri Class 3 uPVC pressure-pipe variants.
- 63 mm and 75 mm name the outside size, not the water opening.
- Both list Class 3; that alone does not approve your pump pressure.
- Ask for exact stock and a written quotation; online checkout is not verified.
Read the full pipe label
- Agri is Ashirvad's agricultural pipe range name.
- uPVC means rigid, unplasticised PVC.
- Class 3 is the pressure class listed as 6 kgf/cm² in the manual.
- These are water-distribution pipe examples. Do not use this comparison to select a borewell column pipe.
Measure the route first
- Write the water flow needed at the far end.
- Measure the full pipe route, including rises and turns.
- List valves, bends, filters, and branches.
- Get the actual inside diameter for each exact pipe variant.
- Ask for the pump's operating and shut-off pressures.
- Note outdoor heat, burial, supports, and how the pipe will be joined.
Two exact Class 3 variants
| Check | Agri 63 mm Class 3 | Agri 75 mm Class 3 |
|---|---|---|
| Material | uPVC | uPVC[S1] |
| Nominal outside size | 63 mm | 75 mm[S1] |
| Outside diameter range | 63.00–63.30 mm | 75.00–75.30 mm[S1] |
| Wall thickness range | 2.20–2.70 mm | 2.60–3.10 mm[S1] |
| Class listed | Class 3: 6 kgf/cm² | Class 3: 6 kgf/cm²[S1] |
| Stock and price | Confirm exact supply | Confirm exact supply[S2] |
Which measurement goes in the calculator?
| Term | Plain meaning | Use |
|---|---|---|
| Outside diameter | Width across the outer pipe | Identifies size; not the water opening[S1] |
| Wall thickness | Plastic between inside and outside | Changes the inside width[S1] |
| Inside diameter | Width of the water opening | Use the exact value for flow checks[S3] |
| Friction loss | Pressure used to push water along the pipe | Compare equal flow and route[S3] |
| Pressure class | Rated pressure under stated conditions | Check heat and pressure surges too[S1] [S3] |
Compare fairly, then complete the design
- Keep flow, pipe length, and water conditions the same for both entries.
- A larger inside width usually gives less straight-pipe friction at equal flow.
- The tool does not include every valve, bend, filter, or outlet loss.
- Add those losses before selecting the pump or final line.
- Do not convert a friction difference into promised electricity savings.
- Pause here: are you comparing the same route, or two different jobs?
Ask for a complete quotation
- Is this Ashirvad Agri uPVC, 63 mm or 75 mm, Class 3?
- What pipe length, quantity, and batch will arrive?
- Can you provide the current dimension and pressure-temperature tables?
- What inside diameter should the designer use?
- Are the fittings, joints, solvent, valves, and supports included?
- Who checks pressure surges and the pump's closed-outlet condition?
- Does the quote include transport, laying, testing, and repair access?
How to reach a real buying decision
- Use Ashirvad's official Agri page and contact route to ask about these exact variants.
- Request dealer details, stock, delivery, tax, and written terms.
- No verified exact-variant ecommerce checkout is linked here yet.
- Do not pay against a general pipe-family name.
- Compare total installed cost. A price per metre leaves out fittings and labour.
- A larger pipe is not automatically the better purchase; check the complete job first.
Check pressure and joints before use
Have the responsible installer check heat, pressure surges, supports, joints, and test procedure. The calculator does not approve pressure class.[S1] [S2]
Follow the manufacturer's solvent handling and curing instructions. Inspect delivered pipes for damage. Record the installed route and test results before handover.[S1] [S2]
Quick questions
Should I enter 63 mm as the inside diameter?
No. It is the nominal outside size here. Ask for the exact inside diameter; wall thickness changes the water opening.[S1] [S3]
Does Class 3 mean the pipe fits every pump?
No. The installer must check working pressure, shut-off pressure, surges, temperature, and joints for your system.[S1] [S3]
Can this pipe hold a borewell pump?
This guide compares delivery-line variants. It does not verify a suspended column-pipe application or its load rating.[S2]
This comparison covers only the listed models, criteria, sources, and verification date. Omission or missing public data is not a negative judgement about any brand.
References used for this guide
- Agri technical manual: Class 3 dimensions, page 21 — Ashirvad; accessed 2026-09-05
- Agri pipes: applications, installation and contact route — Ashirvad; accessed 2026-09-05
- Manual: Small Water Systems Serving the Public — Selection of Pipe Sizes — United States Environmental Protection Agency; accessed 2026-09-05
- Energy Performance Assessment of Water Pumps — Bureau of Energy Efficiency; accessed 2026-09-05
