Chongqing Zhongbai Pump Co., Ltd.

Chongqing Zhongbai Pump Co., Ltd. presents its Chinese name as 重庆中佰泵业有限责任公司 and describes research, manufacturing, marketing and service for centrifugal, chemical, diaphragm, screw, self-priming and other pumps, water-supply systems and controls. Its published Chongqing address is labelled as a sales address. Confirm the fabrication and inspection site for the specific quotation rather than treating a sales location as a verified factory.

A July 2018 account-opening permit disclosure from the People’s Bank of China’s Chongqing office records the exact Chinese company name. This is historical entity evidence; it establishes neither present financial standing nor a pump’s certification. Keep the quotation issuer, invoice entity and ordered equipment identification consistent.

The company introduction describes casting, forging, welding, heat treatment, machining and assembly, and mentions CAD/CFD and a performance-test centre. Use that description to request the actual manufacturing and inspection plan for your order. Its dated ISO 9001:2000 reference and broad certification wording do not identify a current, valid certificate or the certification scope of a delivered model.

IH is the stainless-steel chemical centrifugal direction. The product page describes axial suction, radial discharge, foot support and a spacer-coupling arrangement that permits rotor withdrawal without disconnecting the piping or moving the motor. It offers packing and single- or double-face mechanical seals; define liquid compatibility, seal cooling/flushing and maintenance clearance on the selected assembly.

QBY uses compressed air and a diaphragm arrangement without a rotating shaft seal. The page lists several body materials and model-dependent air consumption and particle limits. For a batch-transfer duty, specify available air pressure and capacity, liquid viscosity, solids, suction conditions and discharge backpressure. A catalogue statement about flammable service or dry running is not an application-specific safety approval.

G is the single-screw, positive-displacement direction, with rotor and stator identified as wearing components. For sludge, viscous liquid or fibre-bearing duty, obtain a selected speed, pressure, stator material and drive for the actual medium. The page has several speed/pressure tables and some inconsistent basic rows; the series name alone cannot set the delivered flow or motor.

DJ-Z is the mechanically driven diaphragm metering direction for quantitative delivery of liquids without solids. The page lists stroke-length or motor-frequency adjustment and separate series ranges of 0–500 L/h and 0–1.2 MPa. Specify the required dosing interval and backpressure, and request the actual calibrated working range rather than assuming reliable metering at every value down to zero.

The IH overview gives a 6.3–400 m³/h flow envelope, 5–132 m head and 1450/2900 rpm directions. Separate minima and maxima do not describe one pump. As a concrete catalogue comparison, IH50-32-160 is listed at 12.5 m³/h and 32 m at 2900 rpm, and 6.3 m³/h and 8 m at 1450 rpm. Those are two published rows for one designation at different speeds, not a guarantee on your liquid.

The table splits motor selection into different liquid-density columns. State the process density alongside viscosity and temperature and ask for the selected impeller, speed and motor on one issued schedule. Other rows contain inconsistent flow conversions or power entries, so do not size from an isolated number or transfer a motor value from a neighbouring row.

The normal IH temperature description is −20 to 105 °C. A separate higher-temperature statement is conditional on a double-face seal cooling arrangement. Ask for the permitted conditions and complete auxiliary specification for the quoted configuration; the existing IH range is not blanket approval for hot, concentrated or hazardous chemicals.

Review the existing Zhongbai IH product record →

The DJ-Z listing gives PVC, SUS304, SUS316 and PTFE pump-head and valve directions, with material choices for valve balls and seals. Identify each wetted component against the chemical, concentration and temperature; a stainless-steel option does not settle the diaphragm, ball and seal compatibility.

Give minimum, normal and peak dose in L/h, chemical supply level, suction-line arrangement and backpressure through the process cycle. State whether adjustment is manual, by motor frequency or by an external command, and identify the required signal and feedback. Agree how delivered dose will be checked at the actual pressure and how the calibration record identifies the pump.

Ask whether the quotation includes only the metering pump or also the tank, valves, pipework, instrumentation and control panel. Clarify flushing and maintenance access, loss-of-feed indication and the process interlocks. General claims of no leakage or suitability for dangerous chemicals should be replaced by an agreed material and containment specification.

The stainless-steel lifting listing concerns drainage outlets below the public sewer. Its description uses a sealed collecting arrangement with solids separation and a backwashing route, and discusses level-operated duty/standby pumps. The title says ZBWT/S while the body uses ZBWP and ZBWT; request the exact series, sectional drawing and solids path on the proposal rather than treating the names as interchangeable.

Provide peak inflow, drainage sources, solids and grease, inlet elevations, discharge sewer level, route length and installation space. Confirm ventilation, check valves, isolation, high-level alarm, standby capacity and access for inspecting the separation components. The marketing description of no cleaning or maintenance is not a service plan.

The separate ZBWT/YZ prefabricated-station entry describes a buried package with a fibre-reinforced body, submersible pumps, screening, pipework, valves and controls. It discusses level sensors and optional remote monitoring. Supply ground and groundwater information, inlet/outlet levels, lifting/access constraints and civil-work boundaries. Obtain the ordered body and installation drawings, control schedule and commissioning responsibilities; do not infer permanent waterproofing or a decades-long service guarantee.

The WFG entry describes variable-speed control, a stabilising vessel, pump units, instruments, valves, pipework and base. It also mixes direct mains boosting and tank-associated operation in its explanation. Ask for a schematic identifying the actual incoming supply, tank if included, isolation, pressure sensing and operating sequence.

Provide the measured minimum/maximum incoming pressure, peak demand, required pressure at the critical outlet, pipe losses and electrical supply. Confirm the water utility’s conditions for connection, backflow protection, low-inlet-pressure response and the required redundancy. The catalogue’s household-count or height guide is a preliminary pointer, not a building-specific hydraulic calculation.

Identify the selected inverter, PLC, duty/standby changeover, alarms and building-management interface in the bill of materials. Request applicable drinking-water material evidence where needed. SUS304 wording, an ABB mention or a general energy-saving percentage does not establish the actual ordered components, water-quality approval or the saving at your site.

Separate individual pump selection from system integration. Include destination, quantity and acceptance documents, then add the drawing and operating cases relevant to the equipment. Define who supplies installation, electrical connection, commissioning and operating instructions.

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