Jiangsu Changfulong Pump Co., Ltd.

The official catalogue and contact page identify 江苏常氟隆泵业有限公司, Jiangsu Changfulong Pump Co., Ltd., with a listed base in Changzhou’s Xinbei district. Its product navigation covers magnetic-drive, centrifugal, self-priming, submerged and slurry pumps, alongside diaphragm, screw and sewage-pump directions and fluoroplastic-lined valves. That navigation defines the published range; it does not establish the specification or manufacturing scope of every item.

The useful procurement distinction is between a fluoroplastic wet end, a stainless-steel wet end and a construction intended for solids. The site describes applications in chemical production, chlor-alkali, pesticides and wastewater treatment. Treat these as application directions, then ask for the selected liquid’s compatibility, hydraulic curve and delivered construction. An industry list is not evidence of a named customer’s current operation.

Use the exact contracting identity on the quotation, test records and warranty. The accessible introduction does not establish current production capacity, an independently checked certificate or a verified delivery lead time. Those items belong in the supplier’s order documents when they affect qualification, rather than in an assumed factory ranking.

The catalogue separates several pump constructions that can share a chemical-transfer application but require different maintenance and protection. Identify corrosion chemistry, particles or crystallisation, temperature, leakage consequences and the suction condition first. A stainless-steel pump is not automatically suitable for every acid; a fluoroplastic lining does not make a liquid-lubricated magnetic-drive bearing tolerant of grit.

The published ranges below are family summaries. Maximum flow, head and power are not one simultaneous duty point. Request a selection at the required flow and total dynamic head, with the liquid’s density and viscosity, the chosen impeller and speed, and the actual motor and seal arrangement.

IHF is described as an overhung, single-stage, single-suction centrifugal pump with a metal casing lined with F46. The impeller, cover and shaft sleeve use metal inserts covered with fluoroplastic. The description names an external bellows seal and an internal double mechanical-seal arrangement. Ask which construction is included, the seal-face and secondary-seal materials, and any flushing or barrier requirements for the liquid.

IHF-D is labelled as the close-coupled direction, while much of its description repeats the IHF text. Obtain the actual assembly drawing, motor connection and dismantling sequence rather than assuming the standard base-and-coupling arrangement. Check space to remove the seal and rotating parts, and the included base, coupling guard and motor.

The marketing text gives a very broad temperature and chemical envelope. Do not use that as approval for a particular concentration at a particular temperature: lining, seal, elastomer, pressure and vapour behaviour must be reviewed together. A separate news article headed IHF discusses UHMWPE; that does not change the F46 material identified on the actual IHF product page. Specify the wet-end material on the quotation and inspection documents.

Review the existing Changfulong IHF catalogue page →

CQB is described with magnetic coupling and fluoroplastic/ceramic wetted components, eliminating a dynamic shaft-seal point. IMD describes an F46-lined metal construction, a non-metallic containment shell and rear withdrawal of core parts. For either direction, define the selected bearing and containment construction, chemical compatibility, temperature and the coupling’s allowable load.

Changfulong’s maintenance article warns specifically about CQB-F dry running and particles or readily crystallising media. It explains that the pumped liquid lubricates the rubbing components. Include startup filling and venting, an adequate supply of liquid, a minimum-flow requirement from the selected manual, and appropriate abnormal-condition protection in the package review.

The Hydraulic Institute’s technical guidance independently explains why sealless pump bearings need adequate process-fluid lubrication, and why abrasives or cavitation can damage the containment system. Agree the bearing-monitoring and shutdown method with the selected construction. Calling a pump sealless is not a guarantee against leakage after a bearing or containment failure.

IMD’s density statement does not establish a rating for every high-density liquid. Request absorbed power and magnetic-coupling margin at the actual duty, including startup and viscosity changes. A motor rating alone does not prove that the coupling will transmit the required load.

UHB-ZK is described as a single-stage cantilever pump with a metal structure lined with ultra-high-molecular-weight polyethylene. Its published purpose combines corrosion and abrasion, including corrosive slurry, mineral-processing liquid and wastewater. This is a different selection direction from the clean-liquid magnetic-drive pumps.

Provide particle-size distribution, largest particle, concentration by mass or volume, hardness, density and any settling or crystallisation tendency. Include the carrier liquid’s concentration and temperature. Those inputs determine whether the proposed wet end, seal, impeller and speed can serve the duty; the series name does not supply an unrestricted particle-passage limit.

Ask for the selected sealing arrangement, allowable solids and temperature, expected wear parts and replacement access. Obtain a material recommendation for the actual mixture and operating conditions, rather than extending the catalogue’s broad acid-concentration statements to all temperatures or mixed chemicals. Agree how wear is assessed and how spare lining and rotating components will be identified.

IH’s header lists 304, 316 and 316L, while its body names 1Cr18Ni9Ti for wetted parts. Specify the exact alloy and the required material documents; those names are not interchangeable merely because all are stainless steels. The IH description excludes solid particles.

IHJ’s alkali-pump description lists internal single, internal double and external mechanical-seal arrangements, with flushing options described by reference to API 682. Decide the seal and auxiliary system using the actual chemical, temperature and leakage requirement. The availability of a flushing option is not a certification of the whole pump to API 682.

Its detailed IHJ table contains rows exceeding the headline 82 m head and 1,000 m³/h flow summary. For example, it lists 65-40-315 at 2,900 r/min with a 25 m³/h, 125 m head point. This is a table example, not a rating to apply to another model; reconcile the selected curve and drawing with the supplier before sizing the drive.

The existing IS entry is a horizontal single-stage clean-water direction. Despite its position in a sewage-pump category, the description excludes solids and gives water-like service up to 80°C. Its overview and table use conflicting flow-unit labels. Keep a model-specific issued schedule as the buying reference and do not select it for corrosive slurry from the category label.

Review the existing clean-water IS entry →

The service policy offers product information, installation dimensions, commissioning guidance and training. It describes a one-year quality warranty beginning with successful installed commissioning, with distinctions between equipment defects and misuse. Agree that start event, coverage, consumables, freight and the destination service arrangement in the actual contract. Published domestic response times do not establish overseas on-site support.

Before acceptance, obtain the selected hydraulic curve, dimensioned drawing, wetted-material and seal schedule, motor data and operating manual. Agree the performance-test duty and conditions, identification of the delivered configuration, and any special material or leakage checks required by the project. The catalogue’s comparison with ISO 2858 is not evidence of a witnessed test or a current third-party product certificate.

Prepare a comparable chemical-pump quotation request →

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