Ceramic Plunger Pump for Filter Press Feeding

The Senjie Ceramic Plunger Pump is purpose-built for chamber filter presses, membrane filter presses, and other industrial filtration systems. Featuring a wear-resistant ceramic plunger design, this pump delivers stable, high-pressure feeding for efficient solid-liquid separation, sludge dewatering, and wastewater treatment. As an essential filter press accessory, it provides outstanding performance in harsh operating conditions, especially with abrasive or corrosive slurries common in mining, ceramics, chemical, and environmental industries.

Main Features of Ceramic Plunger Pump

Specifically engineered as a ceramic plunger pump for filter press feeding, compatible with both chamber and membrane filter press systems
Ceramic plunger construction delivers superior resistance to abrasion and corrosion, making it ideal for aggressive and high-solids slurries
High pressure and stable flow, ensuring optimal solid-liquid separation and maximum filter press efficiency
Heavy-duty cast iron housing with ceramic plunger for long service life and reliable operation in tough environments
Simple structure, easy maintenance, and low operating costs
Widely used in mining, ceramics, chemical, food, and wastewater treatment applications

Typical Technical Parameters

Flow Rate: 1 – 60 m³/h (customizable to filter press system requirements)
Max Pressure: 0.6 – 2.5 MPa (suitable for chamber and membrane filter press feeding)
Material: Cast iron body with ceramic plunger, or optional stainless steel for high-corrosion applications
Motor Power: 3 – 55 kW, suitable for different filter press pump setups
Inlet/Outlet Size: DN50 – DN150, compatible with standard filter press piping
Perfect for solid-liquid separation, ceramic slurry transfer, sludge dewatering, and industrial wastewater treatment

Model	Rated Flow (m³/h)	Pressure Range (MPa)	Strokes (per min)	Stroke (mm)	Motor Power (kW)	Dimensions (mm)	Suction/Discharge Pipe Dia (mm)	Suitable Filter Press Volume (m³)
YB75-Single	0.7	0–2.5	21	220	3	870×740×1450	Φ45 (45)	2–10
YB85-Single	1.5	0–2.5	15	220	3	1000×900×1400	Φ48 (48)	2–10
YB85-Double	3	0–2.5	15	220	4	1300×1050×1400	Φ48 (48)	5–15
YB110-Single	2.3	0–2.5	16	250	4	1000×1050×1560	Φ50 (50)	5–15
YB110-Double	4.5	0–2.5	24	250	4 (5)	1100×1250×1560	Φ50 (50)	10–30
YB140-Single	5	0–2.5	23	250	7.5	1400×1100×1650	Φ78 (60)	10–30
YB140-Double	10	0–2.5	23	250	7.5	1700×1250×1700	Φ78 (60)	30–80
YB140-Double	12	0–2.5	26	250	11	1700×1250×1700	Φ78 (60)	30–80
YB200-Double	19	0–2.5	22	250	18.5	1900×1400×1900	Φ108 (108)	80–200
YB250-Double	30	0–2.0	18	250	22	2400×1300×1900	Φ108 (108)	80–200
YB300-Double	45	0–2.0	15	250	30	1950×1900×2000	Φ159 (133)	200–300
YB300-Extended	60	0–2.0	13	350	37	1950×1900×2300	Φ159 (133)	200–300
YB350-Double	80	0–2.0	12	430	55	2300×2100×2600	Φ159 (159)	200–300

Quick answer: A ceramic piston pump delivers the highest feed pressure of the four pump types and resists abrasion better than any of them, because the ceramic plunger is harder than the particles passing it. It is the pump for the high-pressure finish on 1.6 MPa and membrane presses, and for abrasive slurry that destroys other wet ends.

Specification

Parameter	Typical	Notes
Principle	Positive displacement plunger pump with ceramic plungers	Flow proportional to stroke rate
Pressure	Highest of the four types; suits 1.6 MPa high-pressure and membrane presses	Holds pressure as the press fills, unlike a centrifugal pump
Abrasion	Highest resistance — the ceramic plunger outlasts steel by a wide margin	Chosen for mineral, stone and ceramic slurry
Solids	High	Valve design decides the maximum particle size
Flow	Pulsating, smoothed by an air chamber or damper	Fit a damper where even cake build matters
Drive	Hydraulic or mechanical	Hydraulic drive gives smoother pressure control
Wear parts	Plungers, seals, valve seats	Long intervals, but seals are the routine consumable

Why ceramic, and where it pays

In an abrasive slurry the failure mode is the plunger surface, not the pump body. A steel plunger scores, the seal then leaks, and the pump loses pressure. A ceramic plunger is harder than quartz and most mineral particles, so it polishes rather than scores and keeps the seal face true far longer. On stone-cutting, ceramic-body and mineral concentrate duty this is usually the difference between rebuilding every few months and rebuilding once a year.

The pump earns its cost at the end of the cycle. Once the chambers are packed, only a positive displacement pump can keep pushing filtrate out of the cake, and the drier cake that results is where the money is: cake disposal is charged by weight.

Which feed pump for a filter press?

The feed pump decides whether a filter press cycles cleanly or fights you every batch. Four types cover almost all duty, and the choice follows the slurry, not the press.

Pump	Solids	Abrasion	Max feed pressure	Picks it when
Air-operated diaphragm	Low to medium	Medium	Limited by air supply, typically to ~0.7 MPa	Simple, self-priming, can run dry and stall against a closed press without damage
Progressing cavity (screw)	Medium to high	Medium	High, rises with number of stages	Viscous, shear-sensitive or polymer-conditioned sludge; smooth, pulsation-free flow
Centrifugal slurry	High	Very high	Lower — flow falls sharply as the press fills	High-volume abrasive slurry; often used as a first-stage filling pump
Ceramic piston	High	Very high	Highest — suits 1.6 MPa high-pressure and membrane presses	The final squeeze stage, and abrasive duty that destroys other pump wet ends

A common and economical arrangement pairs two pumps: a centrifugal slurry pump fills the chambers quickly at low pressure, then a piston or progressing cavity pump takes over for the high-pressure finish. One pump sized for both ends of the cycle is usually oversized for the start and underpowered for the finish.

Frequently asked questions

When do I need a ceramic piston pump rather than a cheaper pump?

Three cases: the press is rated above roughly 1.0 MPa and you need the pressure at the end of the cycle; the slurry is abrasive enough to chew through diaphragms or stators; or cake dryness matters commercially because disposal is charged by weight. If none of those apply, a diaphragm or progressing cavity pump is usually the better value.

Does the pulsation matter for cake formation?

It can. A strongly pulsing feed packs the cake unevenly and leaves wetter zones. Fit an air chamber or pulsation damper on the discharge, which smooths the flow enough that cake builds evenly. Hydraulically driven pumps pulse less than mechanically driven ones.

What wears out, and how often?

The routine consumable is the plunger seal set. The ceramic plungers themselves last far longer — they polish rather than score. Valve seats wear on coarse abrasive duty. Watch for pressure falling off at the end of the cycle, which normally means seals rather than plungers.

Can it run against a fully closed press?

It is a positive displacement pump, so it will keep building pressure until something gives. It must have a relief valve or a pressure switch that stops it at the set pressure. Never rely on the press itself to limit the pressure.

Ceramic piston pump or multi-stage progressing cavity pump?

The ceramic piston pump wins on abrasion resistance and on peak pressure. The progressing cavity pump wins on smooth, pulsation-free, low-shear flow, which matters for polymer-conditioned sludge. Abrasive mineral duty points to ceramic; conditioned sludge points to progressing cavity.

What do you need to quote one?

Required feed pressure and flow, slurry solids content, particle size and hardness, slurry chemistry and temperature, the press size and whether it is a membrane press, and whether the pump is filling from empty or only handling the high-pressure finish.

Send your slurry description, flow rate and required feed pressure and we will quote the pump with the press: request a pump quotation.