DupakSYS 4-Pack 38-400 Pump Dispensers for 5-Gallon Jugs — 1 oz Dosage, 50 cm Extended Tubes

DupakSYS 4 Pcs 38-400 pump dispenser delivers a measured 1 oz (30 cc) per press for 5-gallon and 1-gallon jugs, with long cut-to-fit tubes and drip-preventing caps.

These heavy-duty plastic pump dispensers are built to convert large bulk containers into easy-to-use dispensing systems. Each pump locks for transport, dispenses a consistent ounce each push, and ships with both standard and extended tubes so you can reach liquids in tall or awkward containers. The set contains four complete pumps, four short tubes, four 50 cm extended tubes, and four tip covers to limit drips.

How much liquid does each pump dispense and how consistent is it?

Every stroke of the DupakSYS pump outputs approximately 30 cc (1 ounce) of liquid with rapid retraction to reduce excess flow. The internal mechanism is designed to return quickly after pressing so subsequent doses remain uniform.

• Exact dosage: ~30 cc (1 oz) per press for repeatable portions.
• Rapid retraction minimizes unintentional over-dispensing.
• Locking top prevents accidental activation during storage or shipping.

Will these pumps fit my containers and how do the tubes work?

These pumps use a 38-400 neck size, compatible with most 5-gallon and many 1-gallon (128 oz) jugs that share the 38 mm (1.5 in) opening. The package includes both 15 cm and 50 cm tubes you can trim to the precise length needed to reach fluid at the bottom of tall buckets or irregular containers.

• Neck size: 38/400 — measure your jug before ordering to ensure fit.
• Two tube lengths: 15 cm short and 50 cm extended, both cuttable.
• Works with many bulk containers; note it does not fit some brands such as Kirkland detergent jugs.

How does the design reduce dripping and stay durable over time?

Each pump head includes a removable tip cover to limit post-dispense dripping, and the long nozzle can be tilted to return residual liquid into the container. Constructed from heavy-duty plastic, these pumps are washable and reusable for many cycles in both commercial and household settings.

• Includes four black tip caps to prevent drips after use.
• Sturdy plastic construction resists wear from repeated use.
• Washable components for easy cleaning and reuse.

Who is this for? If you refill or dispense liquids from large jugs or buckets — house cleaning teams, salons, spas, workshops, schools, or anyone using bulk soap, sanitizer, lotion, or cleaning solutions — these pumps make daily dispensing faster and less wasteful. They are ideal when you need measured portions, extended reach into tall containers, and a durable, lockable pump that converts bulk supply into convenient single-hand dispensing. Remember to confirm your container’s 38/400 neck measurement before buying to ensure compatibility.