Cheonsei Dosing Pump Price: How KD Series Options Change the Quote

There is no single Cheonsei dosing pump price you can pull off a list, because the KD series is built to order from a model code. Each position in that code is a cost decision: nominal flow, discharge pressure rank, liquid end material, options, connection, viscosity class and power supply. Two pumps rated for the same 3000 mL/min can sit at very different price points if one has a PP head and the other a stainless steel head with a 4-20mA control unit. This guide is for buyers, consultants and contractors who want to understand a quote before they sign it.

What sets the base Cheonsei dosing pump price: flow and pressure rank

The KD flow code reads as A×10^B mL/min, and the range runs from 20 up to 45000 mL/min. Bigger flow means a larger diaphragm, gearbox and motor, so the base Cheonsei dosing pump price climbs with capacity. No surprise there.

The letter after the flow code gets less attention. H is high pressure, M is middle, L is low and S is special. At similar flow, a high pressure model uses a different diaphragm size or stroke rate and heavier parts. We regularly see buyers pick an H model for a line that never sees more than a few bar. Size the pressure rank to the real system pressure plus a sensible margin, not to the highest number in the table.

If the code itself is unfamiliar, our walkthrough of the Cheonsei KD model code breaks down every digit.

Liquid end material: the biggest swing in a Cheonsei metering pump quote

Cheonsei lists three standard wetted material groups for the KD:

1. PTC: PP or PVC head, PTFE diaphragm, ceramic balls. The default for most water treatment chemicals and many acids and caustics.
2. FTC: PVDF head. Wider chemical and temperature resistance, often chosen for sodium hypochlorite and other oxidizers.
3. STS / 6T6: stainless steel head and SS316 balls, for solvents, hotter liquids or sites that require a metal head.

Material and machining cost rise in that order, and so does the Cheonsei dosing pump price at the same flow. The manual also notes that special alloys such as Hastelloy can be supplied on request, which means a separate quote and longer lead time.

The classic mistake is ordering stainless "to be safe". Stainless steel does not handle hydrochloric acid or high chloride chemicals well, so you pay more for a worse match. See PTC, FTC and STS liquid ends explained before you lock in the material.

Options and control: manual stroke or 4-20mA

The option position in the code has three choices. E adds an air relief valve, F adds a relief valve, and A adds the BLDC motor control unit.

E and F add a modest amount to the Cheonsei dosing pump price and usually pay for themselves. Gassing chemicals like hypochlorite are far less likely to vapor lock with an air relief valve, and a built-in relief valve protects the head if someone closes a discharge valve.

Option A moves the quote more. The KD-A pumps use a brushless DC motor with an onboard microprocessor that follows an external 4-20mA signal, and the literature quotes an adjustable range of 5-100% of full scale plus an isolated 4-20mA feedback output for the PLC. A standard KD is adjusted by hand on the stroke knob, with an effective range of 20-100% of maximum capacity.

Pay for option A only if the process needs flow-paced dosing. For a steady feed point, a manual pump is fine. For variable plant flow, ordering the A version is simpler than bolting on a VFD later.

Motor, viscosity and connections in the Cheonsei dosing pump price

The standard motor is three-phase 220/380V, with 440V also listed. Single-phase power or an explosion-proof motor counts as special and changes both the Cheonsei dosing pump price and the delivery time. For hazardous areas, put the required protection rating in your inquiry.

Viscosity class W is standard, below 500 cP. Class V covers 500-3000 cP and uses a different valve design, so it is priced differently. Concentrated polymer and some antiscalants fall into this range.

Connections can be flange, hose or thread. The cost difference is small, but a mismatch with site piping costs more to fix than you saved on the pump.

Import channel, lead time and spare parts

Cheonsei is a Korean brand, so the landed Cheonsei dosing pump price includes import costs, distributor stock and local service. Common models held in stock ship fast with predictable pricing. Unusual flow codes, special materials or special motors are factory orders, and the quote often waits on factory confirmation.

Spares are the line most people forget. The KD wear parts are the diaphragm, check balls, valve seats and O-rings. Ordering a starter kit with the pump costs far less than an emergency shipment after a shutdown.

Conclusion

The Cheonsei dosing pump price is set by the model code. Flow and pressure rank define the base, the liquid end is the largest swing, and option A, special motors and high viscosity valves add on top. Match pressure to the real line, material to the chemical, and control to the process. To compare against other brands, read what drives metering pump price. The KD belongs to our mechanical diaphragm metering pump range, and other makes are listed under metering pump brands. Send us the chemical, concentration, flow, discharge pressure and power supply and contact our engineers to confirm the model and quote.

FAQ

Can you give me a ballpark Cheonsei dosing pump price?

Not responsibly without a model code. Changing the material or one option moves the Cheonsei dosing pump price into a different tier, so we need chemical, flow and pressure first.

Why does a Cheonsei KD cost more than some local mechanical diaphragm pumps?

Mainly import and brand costs. Compare materials and construction line by line rather than flow alone.

Can I reorder using the nameplate of my old pump?

Usually yes. Send a full photo of the nameplate, especially the option and material positions, so relief or air vent valves are not missed.

Can a manual KD be converted to 4-20mA later?

It is not recommended. Option A uses a different drive, so choose it at the order stage.

Does the Cheonsei dosing pump price include a back pressure valve?

Normally not. The valve and a pulsation dampener are quoted separately and are worth adding on long lines or where discharge pressure is lower than suction pressure.