A valveless plunger pump that works with both strong acids and silicone oils.

A valveless plunger pump that works with both strong acids and silicone oils.

Finally, a pump that's "not picky" about its components!

It has handled 46# machine oil, as well as alcohol, acetone, and hydrochloric acid.

It has metered 0.3g of glycerin in a single application and supported 24-hour continuous spraying of 500ml.

It is unaffected by the swelling of dichloromethane or the corrosion of 98% fuming nitric acid.

Part One: What Media Can It Measuring?

In the chemical, biopharmaceutical, electronic fluid injection, and fragrance industries, the real challenge is never "how high the flow 

rate is," but rather:

"Can this pump handle my media?"

Let's start with the most troublesome:

🔥 Strong Acids, Strong Alkalis, Strong Corrosives

Hydrochloric acid (3%, 6%, any concentration)

Nitric acid (dilute nitric acid, 98% fuming nitric acid)

Sulfuric acid, phosphoric acid, perchloric acid

Sodium hydroxide (alkaline solution, potassium carbonate solution)

Ammonia, sodium silicate solution

These liquids would render a conventional metal pump unusable within a day. But the wetted materials of valveless plunger 

pumps—zirconia ceramic, sapphire, PTFE, fluororubber (FFKM)—allow them to be safely transported like water.

🧪 Organic Solvents (Those that "swell"): Xylene, Toluene, Acetone

Ethyl Acetate, Dichloromethane, Methanol, Ethanol

Ether Solvents, Chlorinated Solvents

Methyltrichlorosilane, Vinyl Hydrogen Silicone Oil

Many pumps are sensitive to solvents because their seals can expand, soften, and seize. However, the valveless plunger pump's valveless

 structure and special sealing design make "swelling liquids" no longer a no-go zone.

🛢️ Oils (From Light to Heavy): 46# Engine Oil, 46# Hydraulic Oil

Diesel, Gasoline, Transformer Oil

Lubricating Oil, Drawing Oil, Damping Oil

White Oil, Silicone Oil, Dimethyl Silicone Oil

Vegetable Oil, Edible Oil, Coolant

Variations range from "like water" to "like edible oil," all compatible with a single pump body. No pump replacement is needed; simply

 clean the pump to switch media.

💧 Water Types - Not All Waters Are the Same

Pure Water, Ultrapure Water, Deionized Water, Distilled Water

Deionized Water, Warm Water

Aqueous Solutions, Acid-Base Solutions

High-purity water delivery is most susceptible to metal ion precipitation. Ceramic pump bodies naturally prevent precipitation, meeting 

electronic and pharmaceutical grade requirements.

🧴 Viscous, Gel-like, Easily Crystallizing

Glycerin, Syrup, Sugar Water

AB Glue, Anaerobic Glue, Adhesive

Gelatin Solution, Protein Solution, Dairy Product

Silica Sol, Rosin, Beeswax

Mosquito Repellent Liquid, Protein Solution

These liquids easily adhere to the pump walls, crystallize, and cause pump jamming. The valveless plunger pump's working principle 

is naturally suitable—no valve clogging, precise dispensing of 0.3g/2 seconds per cycle.

🎨 Special Industries & Special Liquids

Inks, inks, colorants, fluorescent agents

Perfumes, spirits, nicotine

Hyaluronic acid, emulsions, pharmaceutical solutions

Electrolytes, curing agents, catalysts

Drag reducers, silicon tetrachloride, phosphorus trichloride

Even perfluorocopper (highly corrosive), dimethyl silicone oil + ethanol + n-hexane mixtures—as long as they are free of particles an

do not react with ceramics/PTFE, they can be stably transported.

Part Two: Not just "capable," but "accurate"

Media compatibility is only the first hurdle. In real industrial scenarios, precision and consistency are also crucial.

Demand Scenarios and Actual Performance of Valveless Plunger Pumps

Single Micro-volume Dispensing: Minimum single-volume displacement adjustable from 0-0.13cc, e.g., 0.3g/2 seconds per dispense)

Continuous Long-Term Spraying: 24-hour spraying up to 500ml, controllable temperature rise, no downtime

Viocity Switching: Water → Oil → Solvent; switching is possible after cleaning, no pump replacement required

Drip/Continuous/Metering: Supports drip dispensing, continuous spraying, and precision metering filling

Part Three: The Only "Boundary Condition"

Of course, no pump is perfect. Valveless plunger pumps also have three prerequisites:

No particles – particles will wear down the ceramic plunger

No curing – fast-curing AB glue won't work (it will solidify inside the pump)

No corrosion to ceramic/PTFE – except for hydrofluoric acid (HF)

As long as your medium meets these three conditions, regardless of whether it is:

As thin as water

As viscous as oil

As strong as acid

As "biting" at the seals as a solvent

The valveless plunger pump can handle it.

If you have specific selection and quotation requirements for precision valveless plunger pumps or liquid transfer pumps, 

please feel free to contact Winny:

Email: [email protected]

WhatsApp: 008618049841995