Which HNYB Pump Do I Need? Match the Family to the Duty

If you mean HNYB from Henan Yibeng Pump Industry, start with the liquid and the required flow at total head, not motor horsepower. Clean-water transfer points toward an end-suction or split-case pump; higher-head duties toward a multistage pump; sewage, abrasive slurry and corrosive liquids need their own shortlist. HNYB lists these as separate product families in its pump catalogue.

The family gets you to a quotation. The exact model still needs a performance curve, confirmed liquid limits and an installation that supplies adequate suction pressure.

Choose the HNYB family first

The following is a shortlist based on HNYB’s published product descriptions as checked on October 31, 2026—not a guarantee that every size or material within a family suits the job.

Your application	HNYB offering to shortlist	What decides whether it fits
Clean-water transfer, circulation or irrigation	Single-stage end-suction centrifugal pump	HNYB describes water-like liquids at up to 80°C and lists a family head range of 9–80 m. Check the exact flow/head pairing.
Bulk water supply or larger irrigation duties	Double-suction, axially split-case pump	Compare its curve with end-suction alternatives. HNYB describes access for repair without disconnecting the suction and discharge pipes or motor.
Higher-head water transfer or mine drainage	D/DF/DY/MD horizontal multistage pumps	Select the liquid-compatible variant, then the hydraulic size and stage count.
Boiler feedwater	DG multistage boiler-feed pump	Confirm feedwater temperature, inlet pressure, total head, suction margin and minimum-flow requirements.
Sewage containing solids, with a surface-mounted pump	ZW self-priming sewage pump	Obtain the exact solids passage, fiber-handling limits and allowable suction lift. HNYB specifies an initial liquid fill for priming.
Abrasive sand, mineral slurry or dredging duty	Slurry pump range	Specify particle size, solids concentration and wear-material requirements—not just “dirty water.”
Temporary water transfer without dependable electricity	Diesel-driven self-priming skid	Match the hydraulic duty first, then engine power, runtime and the included hoses, valves and controls.

For corrosive process liquids, compare HNYB’s chemical pumps with the DF multistage option. Its stainless-steel chemical centrifugal pump page lists SS304, SS316, duplex and special-alloy options, plus several seal arrangements. Ask for written compatibility with your named chemical, concentration and temperature; “stainless steel” alone is not a sufficient purchase specification.

D, DF, DY and MD are not interchangeable

HNYB groups these pumps on one page, but assigns different duties to the prefixes:

• D: clean water without solid particles, below 80°C, or similar liquids.
• DF: corrosive liquids without solids, from −20°C to 105°C. Material and sealing selection depends on the actual medium; the page also specifies inlet pressure below 0.6 MPa.
• DY: oil and petroleum products without solids, from −20°C to 105°C. Have the supplier confirm allowable viscosity in recognized units—the English page’s viscosity wording is unclear.
• MD: neutral mine water and similar wastewater, from −20°C to 80°C. The page states particle content no greater than 1.5% and particle size no greater than 0.5 mm, but does not identify the concentration basis.

That last limit matters: MD is not a blanket recommendation for coarse slurry or raw sewage.

HNYB also offers self-balancing multistage variants, which it describes as using symmetrically arranged impellers to counter axial thrust without a balance disc. Their published limits differ: the MDP/MDSP description allows particles up to 1.3 mm. Do not transfer that limit to a conventional MD pump. Request the complete designation and liquid specification for the quoted unit.

Check these before accepting the model

1. Flow and head must be met together. Total head includes the elevation and pressure requirements plus friction losses at the required flow. It is not simply the height of the discharge pipe. The DOE motor-driven systems guide, Chapter 8, explains how static head and friction combine into the system curve.

Treat catalogue ranges as screening information. For example, HNYB’s split-case page lists the same 50–1,800 m headline head range as its conventional multistage page. That is not a model-specific selection curve. Obtain a curve identified by model, stage count where applicable, impeller diameter and speed. Xylem’s curve-reading guidance confirms that performance curves depend on pump design, speed and impeller diameter, and that liquid specific gravity affects power requirements.

2. Check suction conditions separately. Ask the selector to compare available net positive suction head (NPSHA) at the lowest source level and highest liquid temperature with the pump’s required NPSH, including an appropriate margin. Do not design merely for equality between available and required NPSH. This explanation of NPSH and suction margins explains why a margin is needed; have the selector specify one appropriate to the pump and duty.

3. Require a complete configuration. Before ordering, send HNYB:

• Liquid name, concentration, temperature range, density, viscosity and solids details.
• Normal, minimum and maximum flow, with total head at those conditions.
• Source levels, inlet pressure, suction-pipe dimensions and site elevation.
• Operating hours, control method and available voltage, phase and frequency—or diesel runtime.
• Required wetted materials, seal arrangement, connections and installation dimensions.

Ask the quotation to return the exact model and curve, approved operating range, NPSH requirement, liquid limits, driver rating and package scope. If it returns only a family name and maximum capacity, you have not yet selected the HNYB pump you need.