This is the template we are using!!!

Various spouted pouch fitments and valve types displayed on a white background including flip caps, screw tops, and child-resistant closures.

Fitments & Valves 101: A Beginner’s Guide to Spouted Pouch Components

Confused by spout fitments and pouch valves? Learn the basics of flexible pouch components including sizes, tamper-evidence, child-resistance, and resealability.

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What the Heck Is a Fitment, Anyway?

If you're new to spouted pouches, the terminology can be overwhelming:

Fitments?
Valves?
Resealable?
Aseptic?
Tamper-evident?

Labeled diagram showing the parts of a spouted pouch fitment including the spout base, cap, and tamper-evident ring.

1. What Is a Spout Fitment?

A spout fitment is the hard plastic component heat-sealed into the flexible pouch that allows the liquid product to be poured, dispensed, or resealed. Key parts include the spout body, cap, tamper-evident ring, and optional valve or membrane.

2. Fitment Sizes & Openings

Opening Diameter	Common Use Cases
8mm–10mm	Nutraceuticals, baby food, sauces
13mm–16mm	Beverages, condiments, cosmetic gels
18mm–20mm+	Detergents, automotive fluids

Side-by-side image of three spouted pouch fitments with different opening sizes labeled for various applications.

Collection of flexible pouch valves including air-return and one-way flow options used in detergent or gel packaging.

3. Valve Types: Controlling Flow and Function

One-way valves: Prevent backflow (personal care, medical)
Air-return valves: Ensure consistent dispensing (squeezable products)
Dispensing valves: Controlled dosing (automotive, industrial)

4. Tamper-Evident & Child-Resistant Closures

Breakable pull rings or tear bands
Heat-sealed caps with visible perforation
Dual-action open (push + twist) for child safety

Close-up of a child-resistant cap on a spouted pouch, showing push-and-turn instructions.

A person closing a flip-top resealable spouted pouch filled with juice or liquid detergent.

5. Resealability: How Many Times Can It Close?

Flip-top caps
Screw-on caps
Snap closures with locking ridges

6. Customization & Fitment Selection Tips

Viscosity of your product
Consumer use case (single-use, travel, refill)
Filling method (hot fill, cold fill, aseptic)
Regulatory needs (child-safe, food contact)

Need help choosing the right fitment? We offer fitment consultation, component sourcing, and compatibility support.

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