Jiangsu Xinquan Pump & Valve Manufacturing Co., Ltd.

An acid pickling enquiry can involve either a clean transfer liquid or a liquor carrying process solids. Describe the actual stream instead of selecting a pump from the word “acid” alone. The CQF series calls for liquids without solid particles; the slurry and immersed directions require their own material and mechanical selection.

The CQF-series catalogue presents speed and liquid specific gravity in separate column groups. These three untrimmed selections come from the 2,900 r/min group. The motor rating belongs to its stated density column; the efficiency and required NPSH are separate columns to the left of both speed groups.

For CQFS40-25-105, the 36% efficiency and 6 m NPSHr cells span the adjacent CQB40-25-105 and CQFS40-25-105 rows. The row itself gives 6.3 m³/h, 12.5 m and 1.1 kW in each density column. At 1,450 r/min the sheet lists 3.2 m³/h and 3.2 m on the CQB40-25-105 row of the same size; confirm the CQFS figure with Xinquan before quoting at this speed. Keep the selected speed on the quotation and the test curve.

CQB50-32-200 shows why density has its own motor columns: the published duty stays at 12.5 m³/h and 50 m, while the motor changes from 7.5 kW at specific gravity up to 1.3 to 11 kW at up to 1.8. For CQB50-32-160, both columns list 4 kW at 12.5 m³/h and 32 m. The A and B suffix rows elsewhere on the sheet have their own trimmed-impeller duties; they are separate selections.

The CQF overview identifies fluoroplastic alternatives involving F4 and F6, while it describes CQB as stainless construction. Its illustrated parts lists cover several sizes and show different bearing, shaft, seal-ring and containment-sleeve materials. Request the component schedule for the offered CQFS size. Confirm the material for the exact size offered.

The magnetic coupling transfers rotation across a static containment boundary instead of a conventional shaft seal passing through the casing. That construction still needs suitable liquid properties and suction conditions. Give normal and minimum tank levels, suction losses, liquid temperature and vapour-pressure information, alongside composition and concentration. Agree the offered operating limits and any required protection before fixing the installation.

CQFS40-25-105 model details →

Compare magnetic-drive factory operating limits →

Read a submitted pump curve →

The FDV documentation describes a horizontal, single-stage, single-suction cantilever slurry pump with ultra-high-molecular-weight polyethylene liquid-contact parts. It also describes front and rear covers intended to make wear-part access easier. Its polymer and impeller alternatives need to be resolved in the offered code, rather than treating the engineering-plastic family as one material.

Read the material code on the offer: U0 ordinary UHMWPE is listed at up to 80°C, while U1 heat-resistant material is listed at up to 100°C. The overview discusses higher temperatures for other polymers, so its broad temperature range and the U0 rating describe different constructions. Name the polymer, impeller and operating/cleaning temperatures together in the quotation.

Xinquan describes FZB and FZB-L as externally mixing self-priming constructions. The documentation calls for filling the pump casing before the first start and describes subsequent starts without repeated priming-water injection or a separate vacuum operation.

The FZB-L designation identifies a shaft-connected arrangement with a base, while the catalogue distinguishes the direct-coupled arrangement. Include the suction height and pipe length/diameter, bends, inlet condition, liquid temperature and expected air ingress in the enquiry. Ask for the selected pump’s priming instructions and permissible suction conditions, together with the assembly drawing and seal materials.

For a hot or crystallising liquid, give the normal, cleaning and shutdown conditions with the chemistry. Have the bidder identify the offered polymer, impeller connection and seal, and specify how the suction line and casing are drained or flushed between runs.

The FYC documentation describes a low-speed engineering-plastic cantilever immersed slurry pump using UHMWPE liquid-contact parts and no lower auxiliary support. Its stated application conditions include solids concentration up to 20% by mass, particle diameter up to 1.0 mm and temperature up to 80°C.

The same source discusses insertion depths of 1.5–1.8 m. Its ordering diagram separates insertion length L from an additional filter extension L1. A tank drawing should therefore identify the mounting plane, bottom clearance, minimum/normal/maximum liquid levels and the intended filter or suction-end extension. Ask for the dimension drawing of the selected length.

For intermittent tank duty, agree the selected assembly’s startup sequence, minimum liquid level and low-level shutdown in the supplied manual. Include maintenance lifting space above the tank and the pipe load/interface at the discharge.

The company profile describes mechanical design, investment casting, pickling/passivation and machining, with mechanical/chemical tests, measurement, impeller balancing and a pump-performance test centre. For a corrosion-sensitive order, specify the material grade and relevant traceability/inspection records, rather than treating a general equipment list as the test report for your pump.

The original Chinese utility-model publication CN222334027U, dated 10 January 2025, names 江苏欣泉泵阀制造有限公司 and the same Jingjiang address as the company site. It describes a direct-coupled special-plastic pump arrangement using a bracket connection in place of a separate bearing box. Ask Xinquan whether the offered pump uses this bracket design, and request the performance test record separately.

1. Freeze the material and drawing

   Agree the complete selected code, wetted component schedule, seal/auxiliary-water arrangement and approved installation drawing.

2. State the acceptance basis

   Request the selected curve and test conditions, material records, nameplate identification and dimensional checks. Match records to the supplied legal entity and pump.

3. Prepare the wear and service package

   Identify bearings, polymer/impeller parts and seals with part references. Agree the manual, installation responsibilities, spares, quantity, destination and delivery requirements.

Before ordering, confirm in writing with Xinquan: the duty point and speed, motor rating for your liquid density, wetted materials, seal code and the test curve for the exact pump.

Images are generic illustrations.

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