4-Pack Shampoo Pump for Liter 33.8 oz Shampoo and

DupakSYS 4-pack shampoo pumps are lockable 28/410 dispenser tops designed to fit most 1.1" (28mm) liter bottles and deliver a measured 4cc of product per pump.

Swap bulky factory caps for a reliable pump set that works with large shampoo, conditioner, lotion, or body wash containers. These replacement pumps are molded from heavy-duty plastic to resist rust and provide smooth, snag-free pumping. The kit includes two black and two white pumps plus four 20cm tubes that you can trim to size, giving you a straightforward way to convert salon-sized bottles for home, salon, or travel use.

How do I know these pumps will fit my bottle?

These pumps use the common 28/410 thread size (1.1 inch opening), which fits most bottles from 12 oz up to 33.8 oz (1 liter). They will not fit some specialized brands with different neck dimensions, and do not fit gallon jugs. Measure your bottle neck diameter before purchasing to ensure compatibility.

• Fits bottles with a 28mm (1.1") neck opening.
• Compatible with bottles up to 10.7" tall from neck to base.
• Not compatible with certain brands (e.g., some Amika and Olaplex formats).
• Trim the included 20cm tube for shorter bottles as needed.

What materials and performance can I expect from these pumps?

The DupakSYS pumps are built from robust, nonmetallic components to prevent rust and corrosion in damp environments. They use a smooth, spring-free mechanism for dependable action and include a down-lock feature to prevent accidental dispensing. Expect consistent 4 cc doses to reduce waste and control product usage.

• Constructed from heavy-duty plastic—no metal springs to rust.
• Ultra-smooth pumping action for thicker shampoos and lotions.
• Lockable top prevents spills during transport or storage.
• Measured 4 cc output helps extend product lifespan.

How do I install and adjust the dip tube for different bottles?

Installation is tool-free: remove your existing cap, screw the DupakSYS pump onto the bottle, and insert the dip tube into the product. If the tube is longer than the bottle depth, trim it straight across to the required length for optimal suction. The pumps accommodate both full-depth tubes and shorter trimmed tubes for wide bottle compatibility.

• Screw-on 28/410 cap—hand tighten until snug.
• Measure and cut the 20cm tube to the bottle’s internal height.
• Use down-lock to secure the pump for travel or storage.
• Check prime by pumping 2–4 times to draw product up the tube.

Who is this for?

This DupakSYS 4-pack is aimed at salon professionals, home users who buy hair and body care in bulk, and anyone who wants a tidy, leak-resistant dispensing solution. If you need a measured dispense to control product use, a lockable top for travel, or a replacement for a 28mm bottle, this set offers versatile, rust-free performance in both black and white finishes to match your bottles and décor.