Features
Irrigation and downstream equipment documents
Define application conditions and responsibilities
Keep document versions and unresolved items
Applications
Specifications
| Requirement details | Raw water, intended use, demand, and site conditions |
|---|---|
| Implementation and acceptance | Based on applicable requirements and the confirmed scope |
Start with your requirements
Check the irrigation method, water source, downstream equipment, and site conditions before discussing filtration and associated equipment scope.
Provide the project city, intended use, equipment or consumable information, and available documents. Record daily demand separately from peak demand. Relevant technical staff should check missing conditions; the appearance of water or a place name alone cannot determine a system design.
Confirm the scope and responsibilities
Confirm the responsible parties, conditions, fees, and timing separately for supply, transport, installation and commissioning, testing, and ongoing management. Remote document discussions cannot replace all site work. Listing a region does not mean there is a local branch. The manufacturer, permits, or authorizations must match the specific model and documents.
Resources for the next step
Purchasing and Maintenance Knowledge Center
Prepared with AI assistance. This page supports document-based consultation; it does not guarantee water quality, financial returns, or service response times.
Four information handovers when planning fertigation
Prepare details of the crop and growing method, water test results, irrigation zones and schedules, and documentation for existing filtration and fertilizer dosing controls. Define each stage's task before confirming the interfaces between source-water treatment, filtration, backwash water supply and downstream controls.
Rated filtration flow does not establish that backwash requirements are met
Filtration and backwashing are different operating modes. When purchasing an automatic backwash filter, check more than the normal filtration flow: confirm the flow and pressure available during backwashing, the filter units operating simultaneously, whether downstream irrigation continues, and whether the drainage system can handle the backwash water.
| Condition | Information source | What to confirm |
|---|---|---|
| Normal filtration | Actual irrigation zones and filter flow data | Flow, inlet and outlet pressures, and the differential-pressure baseline |
| Backwash water supply | Instructions for the selected filter, pump curves and site water-supply records | Whether backwash flow and pressure meet the requirements of that model |
| Water supply during backwashing | Valve sequence, storage and irrigation-zone scheduling | How downstream supply will continue, operate at reduced flow or pause |
| Triggers and actions | Control documentation and the agreed supply list | Time-based, differential-pressure or manual triggering; how valves and alarms will be checked |
| Drainage and return to service | Drainage conditions and operating records | Confirm the drainage route, completion of backwashing and return to filtration |
Use illustrations to discuss the layout; confirm functions against the supply list
The appearance of a control cabinet, valves or pipework in an image does not establish that the system supports automatic backwashing, closed-loop EC/pH control or remote control. State in the supply list whether each function is included, the relevant model and how it will be verified. Draining and backwashing are not interchangeable functions across all filters.
Check the manufacturer's backwash requirements against the water source and the filter media or elements. Experience-based multipliers and wash durations in the knowledge base must not be treated as operating settings for every model. Fertigation and irrigation outcomes must not be expressed as fixed yield increases or fertilizer savings.
Related resources and next steps
Sources and scope
Drafted with AI assistance on 8 October 2026 and checked item by item against the knowledge base and the public sources below. Manufacturer information explains the relevant technology; it does not imply that Gudian is an authorized distributor or manufacturer for that brand. Equipment specifications are subject to the selected model and confirmed documents.
Fertigation enquiries in Yunnan: distinguish irrigation and backwash
List the zones irrigated together, emitters or sprinklers, and required flow and pressure. Review backwash water supply and drainage separately. For source-water salinity treatment or fertilizer control, provide water tests, EC/pH sampling points and the control list. A disc filter does not establish that a system includes RO or closed-loop nutrient control.
The quotation should define who provides growing targets, source-water treatment, filtration and backwash, fertilization and control commissioning. Confirm supply, installation and site services per project. Assess outcomes using project operating and crop records, rather than copying percentages from industry reports into an equipment guarantee.
Drip blockage and filtration duties · Water tests and sampling points · Prepare records for the project area
