ESPA Pump (Jiaxing) Co., Ltd.

Pool filtration needs a circulation flow through a filter, valves and return fittings. A water-supply booster must deliver the required residual pressure at the outlets as demand changes. A wastewater pump must handle the incoming material and lift it through the discharge route. These circuits may exist in the same hotel or building, but their pumps and acceptance requirements differ.

The Chinese Silen S sheet describes a single-stage pool circulation pump with a prefilter arrangement, technopolymer hydraulic parts, an AISI 431 shaft and a mechanical seal. Single-phase versions have built-in thermal protection. Its hydraulic chart is marked 2,900 r/min and gives the points below.

At the same 9.6 m³/h, the four rows provide different heads. The table’s P1 input and P2 output columns also differ: a 0.75 kW P2 designation is not a 0.75 kW electrical input. Use the voltage-specific P1/current data when preparing electrical supply and running-cost comparisons.

Provide the filter specification, suction and return pipe layout, valves, fittings and intended backwash flow. Ask the supplier to place both operating duties on the selected curve and identify the included unions, electrical connection and priming instructions. A listed self-priming height is not permission to start the pump empty.

The 2025 English catalogue describes Silenplus 1 as variable-speed pool pumping with a device that transmits the filter valve’s position to the pump. This is a controls selection, not simply a Silen S pump with a larger motor. Its speed-dependent curves must be matched to filtration and backwashing separately.

Ask how the offered package identifies valve position, changes speed and resumes filtration after backwashing. For an existing installation, provide the filter valve type and photographs, the required operating schedule and any external control signals. Confirm whether the sensor, controller, unions and commissioning are included.

Request input-power data at the agreed filtration and backwash points, then compare energy over the actual schedule. Do not treat a catalogue’s maximum percentage saving as the saving for every pool. Pipe resistance, dirty-filter conditions and the required turnover determine the usable setting.

The Chinese listing shows Prisma 35N/45N with Kit 02. Its 2025 English pump documentation describes Prisma 35N as a multistage clean-water pump with AISI 304 body and impellers. At 6 m³/h, the 35 3N, 4N and 5N rows list 31, 39 and 49 m respectively. These pump points do not describe the control kit’s operating logic.

For a building supply enquiry, calculate the needed residual pressure at the highest or most demanding outlet, account for pipe losses and state the available inlet pressure. Identify whether suction is flooded or from a storage tank, the lowest tank level and likely peak simultaneous demand. Obtain the selected curve at those conditions.

Specify the control objective: pressure/flow on-off control, variable speed or a packaged multi-pump arrangement. Ask for start/stop conditions, dry-run response, restart behaviour, pressure-vessel scope and electrical protection for the actual kit. A photograph of a controller above the pump does not establish constant-pressure variable-speed operation.

The Chinese Drainex 200/300 sheet identifies cast-iron body and impeller, AISI 420 shaft and a mechanical seal. The group catalogue identifies vortex pumping. The following head values are present in the Chinese hydraulic table at 200 L/min; compare them with the discharge duty before choosing by series number.

The Chinese configuration key distinguishes MA with a float switch, M without a float and T without a float or plug. It lists 10 m cable and a 90° elbow. Agree the supply phase, plug standard, cable routing, level-control arrangement and whether an installation kit is supplied. A float requires space to move and a defined stopping level in the wet well.

Describe largest solids, fibres, grit, liquid temperature and the incoming wastewater. Obtain the exact permissible passage and a suitable retrieval or fixed-installation drawing. Solids diameter alone does not establish tolerance of rags, abrasives or every chemical composition.

Draincor is identified as a grinder-system wastewater pump in the group catalogue. The Chinese sheet lists cast-iron hydraulic parts, an AISI 420 shaft and an external capacitor; its MA configuration includes a float, while T does not. Both listed configurations have cable without a plug. The electrical connection and control scope therefore belong in the quotation.

Identify the waste that calls for grinding rather than relying on a general sewage description. Ask for cutter construction, permitted material, upstream debris precautions, replacement parts and safe retrieval access. Do not translate the grinder designation into an ability to process arbitrary hard objects or a promise of no blockages.

For a site with a narrow discharge route, request the complete curve at the actual pipe losses and operating level. Agree the capacitor-box location for the single-phase arrangement, alarms and servicing procedure. The included discharge elbow does not establish that a guide-coupling system or control cabinet is included.

Several limits differ between the Chinese pages and the English 2025 50 Hz catalogue. Silen S temperature is shown as 60°C in the Chinese text and 40°C in the catalogue. Drainex immersion is 8 m versus 7 m; Drainex 300 passage is 65 mm versus 60 mm. Obtain the selected regional model’s limits in writing.

The Chinese Drainex 200/300 hydraulic image also shows 1.1 kW P2 where the 2025 English rows show 0.9 kW. These differences cannot be settled by combining the more attractive values. Match the full designation, product code, motor nameplate, frequency and drawing revision to one offered build.

For pool water, state salinity and treatment chemicals; salt-chlorinated pool water and seawater are different material duties. For warmed wastewater or spa service, do not carry a limit from another ESPA family into the selected pump. The quotation should identify the acceptable fluid and temperature for its particular seals and construction.

The Chinese introduction dates the Jiaxing company to 2008. The headquarters’ subsidiary directory locates ESPA China in Xiuzhou, Jiaxing. The group’s signed 2021 non-financial report separately lists ESPA CHINA JIAXING CO, LTD under pump production and marketing, and a different Hong Kong company under marketing. That dated group disclosure supports the distinction between the entities; it does not identify the production origin of each pump listed here.

Ask where the exact offered model is made and assembled, which entity invoices it, and which service-parts and warranty route applies in the destination market. A global ESPA catalogue should not be read as evidence that every family is manufactured at the Jiaxing address.

Headquarters published an ISO 9001:2015 announcement for Jiaxing in July 2020 naming SGS. For an order requiring that system certification, request the current holder, scope and validity document. The historical announcement is not presented here as a current certification badge or a product approval.

Submit through KanBeng’s enquiry form with this factory named in your request.