Bottle, Valve, Atomiser: Anatomy of the Trio
The liquid defines a fragrance's character; but the packaging hardware determines how long that liquid survives on the shelf — and how it feels in the hand. The wrong valve will evaporate even the finest formula at the bottom of the bottle. The right valve brings your scent centre stage.
The system has three components: the bottle (body and neck), the valve (the mechanism that retains and doses the liquid) and the atomiser (the pump/spray that breaks the liquid into fine particles). All three must be dimensionally compatible with one another. The heart of that compatibility is the neck size.
Glass or PET, spray or roll-on — these choices are intertwined with your product concept and are explored in depth in separate articles. The focus here is the mechanism that holds the liquid inside the bottle and releases it: valve types.
Three Valve Types: EASY, CRIMP, Screw
There are three fundamental connection types on the market. Which one you choose depends directly on your production volume, shipping requirements and whether your product is a sample or a retail item. Let's go through each one.
1) EASY (Clip-on / Snap-on) Valve
The EASY valve is a clip-on version that seats onto standard crimp-neck (13 mm and 15 mm) bottles by pressing by hand. Instead of crimping, the valve's lower collar slides onto the bottle neck under pressure and the clips grip it in place. Closing is done in seconds with a simple valve-closing tool; for higher-volume production, a bench-mounted model is far more practical.
Seal integrity: Good. A correctly seated EASY valve on the right neck size provides reliable leak-tightness; the difference from CRIMP is that retention relies on clip grip rather than permanent metal crimping.
2) CRIMP Valve
The CRIMP valve is the professional solution in which an aluminium collar is permanently crimped onto the bottle neck using a crimping tool (clamp/pliers). Common neck sizes are 13 mm, 15 mm and 20 mm. Always confirm the neck diameter of your bottle before selecting the correct die.
Fitting: The valve is placed on the neck, the collar is seated in the jaws of the tool and crimped; the collar locks permanently onto the bottle neck in a metallic crimp. This process is irreversible.
Seal integrity: The highest available. This is the only logical choice for retail shelf, display and shipping. It also delivers a professional, premium finish.
| Crimping Tool | Use Case | Speed | Cost |
|---|---|---|---|
| Manual pliers (handheld) | Low-volume production, boutique workshop | Low (unit by unit) | Low |
| Bench-top (fixed) | Medium–high volume, batch production | High, consistent crimping | High |
3) Screw Valve
The screw valve is fitted to threaded-neck bottles by turning by hand. It is typically used with open fragrances and refillable bottles. Its seal integrity depends on the quality of the gasket / O-ring inside the cap.
Advantage: Can be removed and refitted, the bottle can be refilled, and no tools are required. Disadvantage: Not as secure as a crimp valve; if the gasket wears out or the valve is fitted at an angle, air enters and volatile top notes will weaken over time.
Decision Table and Neck Sizes
Let's place all three types side by side. Review this table before making a purchasing decision; the majority of incorrect orders can be prevented right here.
| Valve Type | Neck Size | Fitting Method | Seal Integrity | Ideal Use |
|---|---|---|---|---|
| EASY (Clip-on) | 13 / 15 mm crimp neck | With closing tool | Good | Samples, testers, quick try-ons |
| CRIMP | 13 / 15 / 20 mm | Crimped with pliers/bench tool | High (permanent) | Retail shelf, display, shipping, sales product |
| Screw | Threaded neck (variable) | Hand-turned | Depends on gasket/O-ring, medium–good | Open fragrance, refillable bottle |
Neck size compatibility is absolute: a 15 mm valve will not seat on a 13 mm neck; forcing it will either fail to grip or crack the bottle. The atomiser pump is also integrated into this collar — the pump's dip tube must be long enough to reach the base of the bottle; a short tube leaves liquid at the bottom, while a tube that is too long will kink and block.
The Bottling Process and Common Mistakes
You've chosen your hardware; now it's time to bottle in the correct order. Steps skipped in haste turn into sediment at the bottom or leaks on the shelf.
- Complete maceration
Allow the fragrance to rest at room temperature (~15–20 °C) in the dark. Maceration is chemical maturation; it slows in the cold, which is why it is not carried out in the refrigerator.
- Chilling and filtration (if required)
After maturation, chill at approximately 0–4 °C for around 24 hours to precipitate any waxy deposits, then cold-filter. Otherwise you will see sediment at the bottom of the bottle. This step is separate from maceration and comes after it.
- Prepare the bottle and hardware
The bottle must be clean and dry; moisture inside will cloud the liquid. Verify that the valve matches the bottle's neck size.
- Fill — measuring by volume
Prepare your formula by weight (grams), but when converting to volume (ml) for bottling, account for density. A citrus-forward liquid is light (~0.84 g/ml), whereas a blend heavy in resins or synthetics can exceed 1.10 g/ml. If you look only at grams and blindly convert to ml, the bottle will either overflow or be left half-full.
- Close the valve
For EASY, press by hand; for CRIMP, crimp with the tool; for screw valves, seat the gasket and turn. If any liquid has got onto the neck opening, wipe it clean before closing — liquid trapped under the collar will cause leaks.
- Test
Lay a few bottles on their side and leave them for a while to check seal integrity, atomisation and spray angle. Labelling comes after this — see our separate guide for mandatory label information.
Summary and Frequently Asked Questions
In summary: EASY for samples and testers, CRIMP for retail products, screw for refillable open fragrances. Confirm the neck size first, then match the valve and atomiser to it. Everything else is your signature.
Our range of perfume valves, screw-top fragrance bottles and roll-on bottles is available at esans.com.tr, where you can refine your selection based on your product concept. We explore the glass vs PET and spray vs roll-on questions in depth in separate articles.
Can I ship a sample with an EASY valve by courier?
What is the difference between 13, 15 and 20 mm necks, and which should I choose?
Is leaking normal with a screw valve?
Related Articles
Label Design and Mandatory Label Information
Legally required information and effective branding through labelling.
Read →Glass vs PET, Spray vs Roll-on
A comparison of packaging materials and application types.
Read →Child-Resistant Closures and Safety Requirements
Safety standards and selecting the right closure.
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