Jinhua Shuangding Machinery Co., Ltd.
金华市双鼎机械有限公司
Jinhua Shuangding Machinery makes diaphragm pumps and the parts around them for agricultural spraying: spray assemblies, diverters and inlet and outlet filters. It also sells self-propelled garden sprayers and frame-mounted motor sprayers. The company says it started in 2011 and sells under four brand names. Decide first whether you are buying a bare pump, spray components or a complete sprayer, then ask for the model sheet that matches that level of supply.
Pump, parts or a complete sprayer
Shuangding's range runs from single fluid components up to finished sprayers. Each level of supply needs its own data before you order. A pump that suits your liquid tells you nothing yet about the regulator, drive or boom it will sit in. To put pump flow, pressure and chemical-resistant materials into one enquiry, use our notes on specifying diaphragm spray pumps and sprayers. We list Shuangding under irrigation and liquid-handling equipment.
[1][2][3]| What you buy | What to get from Shuangding |
|---|---|
| Diaphragm pump | Wet-end materials, drive input, flow and pressure, and operating limits for the exact model. |
| Filters and diverters | Connection sizes, body material, filtration grade and the pressure and flow each part is rated for. |
| Nozzles and spray pipes | The assembly you will receive and the spray duty it is meant for, with test figures. |
| Complete sprayer | Drive and controls, tank and pipework, and how the finished machine is checked before shipment. |
Models and specifications
Quote the exact model, configuration and operating conditions together, and ask the factory to confirm current availability.
Shuangding MB4130/3.0 Diaphragm Pump
Catalogue reference: MB4130/3.0
The MB4130/3.0 is a diaphragm pump from Jinhua Shuangding Machinery, sold for agricultural spraying. Three product photographs show the pump body in shaft-drive and pulley-drive forms. Shuangding's model page does not print flow, pressure or input speed, so the first step for a buyer is to request the current data sheet and nameplate photo. This page covers the drive and mounting details to agree, how to match the diaphragm and seals to your liquid, pressure control in a sprayer, and what to put in your enquiry.
Ask the factory for the current specification sheet for this model.
Read the full specification record ↗MB4130/3.0: ask for the pump data sheet
The MB4130/3.0 page carries a diaphragm-pump title, but its text talks about filters and diverters and gives no pump figures. Three photographs show pump bodies, one with an exposed shaft and one with a pulley, with no label saying which version is on offer.
Before you size a system around this pump, ask Shuangding for the current model sheet with flow, pressure and speed, recent photos of the nameplate, shaft and mounting drawings, and a list of what comes in the box. The 130 and 3.0 in the model code are not stated anywhere as flow or pressure, so get those figures in writing.
[1][3][4]Is this a fit for your project?
Based on the manufacturer's published range.
A good fit for
- Quotes for diaphragm pumps and spray components from the listed range.
- Sourcing filters, diverters and spray assemblies alongside a pump.
- Frame-mounted or self-propelled motor sprayers as complete units.
Confirm in writing before ordering
- The MB4130/3.0 data sheet: flow, pressure, speed and drive input for the version you order.
- Diaphragm, valve and seal materials that suit your liquid, with operating limits.
- Which parts Shuangding makes, how pumps and complete sprayers are inspected, and the written service and warranty terms.
Diaphragm, castings and liquid compatibility
Shuangding says its pumps use a special-rubber diaphragm to keep the liquid away from the drive, and aluminium die casting for the main parts. It names no alloy or rubber grade, no machine list and no factory output.
Tell Shuangding what liquid you will pump and ask which diaphragm, valve and seal materials suit it, with operating data to back that up. Ask which parts are made in-house and which are bought in, and what leak and performance checks each pump goes through. The features page also mentions dry running and corrosion resistance in general terms; ask for the model instructions that set actual limits.
[2][4]Ordering a pump or a full liquid system
Set out the scope in four steps so the quotation covers the model and the integration work separately.
[1][2][3]Choose the supply level
Pump, components or complete sprayer, plus the liquid and duty.
Fix the interfaces
Drive, wetted materials, mounting and connections.
Agree the acceptance check
Performance and limits, and how components and the whole system are inspected.
Settle the handover
Consumables, maintenance, who repairs what, and written delivery and service terms.
Jinhua Shuangding Machinery Co., Ltd.
A useful inquiry starts with a clear task
Prepare the same requirement for each supplier. Add the exact model, configuration and acceptance conditions before comparing quotations.
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Before comparing the order
0 of 6 essentials checked
Diverter design certificates
Shuangding's qualification page shows two certificates in its name, both printed with January 2023 grant dates. Both cover diverters. Ask Shuangding for current register extracts if the patents matter to your purchase.
[6]| Certificate | What it covers |
|---|---|
| Diverter appearance design | The look of a named diverter. It says nothing about pump hydraulics or chemical resistance. |
| Utility model: agricultural diverter with adjustable filtering | A component mechanism. Ask whether it is in current production and which products use it. |
| Pump and complete sprayer | Neither certificate covers these. Request the pump schedule and system test records separately. |
Location, sales area and local listing
Shuangding gives its address as Tangxi, Wucheng, Jinhua. Its introduction mentions sales across China and abroad, without naming service partners in destination markets or a written warranty.
A Jinhua notice issued in 2024 lists Shuangding at entry 220, on page 89, in category B of the 2023 industrial-enterprise economic and resource evaluation. That is an economic grading of the business. It does not rate pump quality or capacity.
[1][2][5]Questions buyers should settle
Is there a performance curve for MB4130/3.0?
The model page gives no flow, pressure or curve. Ask Shuangding to send the current data sheet for the exact version.
[1]What does the Jinhua category B listing mean for pump quality?
It is an economic and resource grading of the business from 2023. For pump quality, ask for test and inspection records on the model you buy.
[5]Can Shuangding supply a complete sprayer rather than a bare pump?
Yes, its range includes self-propelled garden sprayers and frame-mounted motor sprayers. Ask for a parts list and the acceptance check for the finished machine.
[2]Sources
Each source is listed with the date it was checked. Ask the factory to confirm current stock, certificates and approvals for your market.
Shuangding official MB4130/3.0 body and images
manufacturer · Record checked 2026-10-11
Diaphragm-pump title and three pump photographs; the text covers filters and diverters and lists no pump figures.
Shuangding official introduction
manufacturer · Record checked 2026-10-11
Founding year, brand names and the spray-system product range.
Shuangding official uses page
manufacturer · Record checked 2026-10-11
General applications for the pump family.
Shuangding official features page
manufacturer · Record checked 2026-10-11
Diaphragm design and material descriptions for the pump family.
Jinhua 2023 economic/resource evaluation
government · Record checked 2026-10-11
Notice published in 2024; Shuangding appears at entry 220 on page 89 in category B.
Shuangding official qualification-page certificate images
manufacturer · Record checked 2026-10-11
A diverter appearance-design certificate and an adjustable-filtering diverter utility-model certificate, both printed with January 2023 grant dates.
Some model details are incomplete in the manufacturer's publications. Confirm them with the factory before ordering.
Report an outdated detail or a source mismatch ↗