316SS P3-C/P4-C Pneumatic Pump

The ZEEPACK Check Valve Style Dispensing Pumps handle low-to-medium viscosity, particle-free liquids.
Precise micrometer calibration and integrated speed control deliver ±0.5% dispensing accuracy with adjustable plunger speed, ensuring reliable performance across diverse conditions.
Constructed entirely from 316 stainless steel, these pumps offer exceptional corrosion resistance – outperforming imported alternatives in demanding applications like Li-Ion electrolyte handling.
P4-C series models incorporate a patented pneumatic-electric control unit with stroke-end sensing for automatic plunger retraction. This compact design features leak-proof valves and integrated speed regulation.

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Product Description

Product Overview

The ZEEPACK P1-C & P2-C Pneumatic Check Valve Pump is a industry-leading solution for applications demanding pinpoint small-volume liquid dispensing. Developed under ZEEPACK’s "Sincerity.Quality.Service" commitment, this series is exclusively designed for low-to-medium viscosity, particle-free liquids, addressing the critical need for consistency in micro-dosing scenarios. What sets it apart is its ±0.5% dispensing accuracy—a standard that generic metering pumps rarely match—ensuring no volume deviation compromises product quality. Every component is crafted from 316 stainless steel, delivering superior corrosion resistance compared to imported alternatives, especially when handling sensitive fluids like Li-Ion electrolyte or pharmaceutical solutions. With volume ranges from 0-0.23mL (P1-C03) to 0-20.1mL (P2-C20), it’s the go-to choice for industries where "small but precise" defines success.

Model	Plunger Dia.	Stroke	Dispensing Vol.	Cycle Rate	Air Consumption	Dimension(MM)			Weight
Model	MM	MM	ML	CCP	L/Min.	A	B	L	KG
P3-C20	31.8	38.1	0-30	0-70	40	125	50.8	301.2	5
P3-C26	41.3	38.1	0-50	0-70	40	125	50.8	301.2	5
P4-1-C34	54.0	25.4	0-58	0-150	51	101	31.75	288.5	6.8
P4-2-C34	54.0	50.8	0-116	0-120	85	129.7	50.8	389.8	7.6
P4-3-C34	54.0	76.2	0-174	0-90	102	167.76	50.8	492.4	8.3
P4-4-C34	54.0	101.6	0-232	0-60	115	205.9	50.8	542.7	9.8

316SS P3-C/P4-C Pneumatic Pump

Key Features: Precision at Its Core

Micrometer-Driven Small-Volume Control

At the heart of the P1-C & P2-C lies a micrometer calibration system, enabling operators to adjust dispensing volumes with microscopic precision. This, paired with integrated speed control, lets you fine-tune plunger speed—critical for delicate liquids like essential oil or pen ink, where rapid flow could cause splashing or air bubbles.

316 Stainless Steel for Maximum Corrosion Resistance

The entire pump body is made of 316 stainless steel, a material resistant to acids, alkalis, and harsh solvents. This makes it far more durable than standard pumps, especially in tasks like Li-Ion electrolyte filling, where corrosion often leads to leaks or contamination.

Compact Design for Seamless Integration

Weighing just 2.5kg (P1-C) to 4.2kg (P2-C), the P1-C & P2-C feature a space-saving profile that fits easily into existing production lines. Its check valve style design prevents backflow, eliminating cross-contamination—a must for cosmetics, pharmaceuticals, and food-grade applications.

High Cycle Rate for Efficient Small-Batch Production

Despite focusing on small volumes, the P1-C series achieves a cycle rate of 0-150 CCP (cycles per minute), while the P2-C reaches 0-120 CCP. This balance of speed and precision makes it ideal for high-volume micro-dosing, such as E-cigarette oil filling for disposable devices.

Applications: Tailored to Micro-Dosing Needs

The ZEEPACK P1-C & P2-C Pneumatic Check Valve Pump excels in industries where even tiny volume errors are unacceptable. Key use cases include:

Electrolyte filling for small Li-Ion batteries (e.g., smartwatch or earbud batteries)

E-cigarette oil dispensing (ensuring consistent nicotine concentration per pod)

Perfume & essential oil micro-dosing (preserving fragrance potency)

Pen ink filling (preventing clogs and ensuring smooth flow)

Pharmaceutical liquid dosing (meeting FDA/EMA precision standards)

Shampoo & skincare sample filling (small-sized bottles for marketing)

FAQ

What liquids should I NOT use with the P1-C & P2-C?

These pumps are only for low-to-medium viscosity, particle-free liquids. Avoid highly viscous fluids (e.g., motor oil) or liquids with particles (e.g., abrasive cleaners), as they can damage the check valve or reduce accuracy.

How often do I need to calibrate the pump to maintain ±0.5% accuracy?

Use the built-in micrometer calibration tool for monthly checks in high-volume production (e.g., 10,000+ units/day) and quarterly checks for lower usage. This ensures consistent performance.

Can the P1-C & P2-C handle corrosive solvents?

Yes—their 316 stainless steel construction resists most solvents, making them safe for chemical liquid dispensing. Always confirm fluid compatibility with our technical team for rare or highly reactive solvents.

Is professional installation required?

No. The pump comes with standard mounting points and a user-friendly manual. Most teams install it in 30 minutes or less, and our support team offers free virtual guidance.

What’s the difference between P1-C and P2-C models?

P1-C models (0-2.5mL) are for ultra-small doses (e.g., perfume samples), while P2-C models (0-20.1mL) handle larger micro-fills (e.g., travel-sized shampoo). P1-C also has a higher cycle rate for faster small-batch runs.