The Ultimate Guide to Trigger Sprayers

By NABO Plastic – The wholesale manufacturer of plastic packaging with over ten years of experience

As a wholesale plastic packaging manufacturer, we have met various questions about trigger sprayers in our business over the years. Through this article, we would like to summarize and answer these questions and share some fun knowledge that only a few people or industry experts know.

Whether you are new to or familiar with trigger sprayers, whether you are doing research or have a purchasing plan, this guide will help you explore.

This article may be the most thorough trigger sprayer guide you’ve ever read.

The trigger sprayer consists of 12 to 15 parts. It features a comfort trigger that fits 2 or 3 fingers. While pressing the trigger, the sprayer can dispense various liquids inside a matched plastic bottle. When paired with different nozzles, it can distribute the fluids in the form of spray, stream, fine mist spray, or foam. The dispensing Output of liquid ranges from 0.3ml to 1.5ml per stroke.

Sectional view of a typical trigger sprayer
The sectional view of a typical trigger sprayer
No.ComponentMaterialDescription
1NozzlePPThe nozzle dispenses the liquid in the form of a stream, spray, fine mist, or foam by forcing it through a small hole.
2Spray ValveLDPEThe nozzle valve prevents airflow back into the pump.
3Plastic SpringLDPEThis spring pushes the spray nozzle to create a stream or spray.
4Inner BodyPPInner body connects the trigger and pump.
5TriggerPPTrigger drives the pump to deliver the liquid to the nozzle.
6CoverPPIt covers the internal mechanisms of the sprayer.
7SpringSUS304HThe spring drives the piston to transfer the liquid.
8PistonHDPEThe piston forces liquid enters the pump body.
9Ball ValveGlassThe ball valve controls the liquid’s flow.
10Closure/CollarPPThe closure matches the compatible bottle neck finish and screws onto it.
11Cap Scall RingPPThis cap ring allows the sprayer to rotate 360 degrees.
12GasketHDPEThe gasket brings a better seal between the sprayer and bottle, preventing air & liquid leaks.
13Dip TubeLDPEThe dip tube sits or stays near the bottom of the bottle for transferring the liquid.

When screwing the trigger pump onto the compatible neck of a bottle, the standard closure/collar threads and internal PE gasket ensure a seal between the sprayer and the bottle. And the dip tube extends to the bottom of the bottle, providing constant contact with the liquid inside the bottle.

While pressing the trigger, the pump compresses the spring to drive the internal piston to suck the liquid in the bottle to the pump body.

Before the liquid enters the pump body, it will pass through a glass or plastic ball valve first. The function of the ball valve is to control the amount of liquid entering.

After the air inside the pump body is exhausted (the liquid fills the entire pump body), the fluid is delivered to the nozzle with each trigger press.

A spray valve at the nozzle allows suction in the pump so the liquid can rise into the dip tube. When switching the nozzle to working mode, it opens the valve, and the nozzle will force the liquid through a small hole to generate a liquid flow.

Adjusting the nozzle allows dispensing of the liquid in different forms: spray, stream, fine mist spray, or foam. The spray nozzle is a one-way valve that prevents airflow back into the pump.

After use, switch the nozzle to the closed mode to prevent dripping and accidental contact by children.

Trigger sprayers are great for dispensing a wide selection of liquids products as follows:

  • Health Care: disinfectant, hand sanitizer, liquid soap
  • Body Care: massage oil, face cleanser, sunscreen lotion, moisturizing lotion
  • Hair Care: hair gel, hair water
  • Home Care: floor cleanser, window cleaning, stain remover, mold remover
  • Bathroom Use: sink & tub cleanser, toilet cleanser, shower cleanser, limescale remover
  • Furniture Care: table surface cleanser, sofa cleanser, paint repair
  • Kitchen Use: oven cleaning, cooking oil
  • Car Care: wheel hub cleanser, car seat cleaner, car wax
  • Garden Care: flower watering, potted plant watering

The manufacture of trigger sprayers goes through a series of production processes, including:

  • Injection Mold Manufacturing
  • Injection Molding Processing
  • Assembling of Components
  • Dip Tube Cutting
  • Quality Control & Inspection
  • Packaging Before Delivery

Let’s walk through these steps one by one in order.

4.1 – Injection Mold Manufacture

Except for the steel spring and glass ball, the raw material is plastic for the rest components of the trigger pump. Manufacturing these components requires 10 to 13 sets of injection molds.

We spare no expense in mold making. Our mold-making principle is to have as many mold cavities and high quality as possible. Maximizing the number of mold cavities enables us to meet lead times for large orders and minimize our cost per product to benefit our customers.

Injection Mold of trigger sprayers Manufacturing

4.2 – Injection Molding Processing

After the injection molds are ready, we will use 10 to 13 injection molding machines to run these molds. We install each mold on one set of the injection molding machine, and the mold is only removed from the injection machine once complete the order for a batch.

Our company is keen on fully automated production. We have 90 brand injection molding machines and adopt advanced manipulators, feeding systems, and recycling systems, strengthening our supply chain to bring stable quality and high Output and minimize product defects caused by human errors.

4.3 – Assembling of components

After completing the production of injection molded components, we will transfer them to the assembly workshop. The automated machines do all assembly processes.

The piston, pump body, spring, and glass valve must be assembled on the same machine first. That allows us to have a complete “pump.” We take this “pump” and build it again on another device with other components, including the collar, foam gasket, spray nozzle, and cover.

Maintaining machines is essential to keep them working with high precision for a long time. Our factory owns nearly 100 sets of assembly machines to ensure that no assembly process must be queued or waited. The sufficient number of devices also allows our mechanics enough time to troubleshoot and schedule maintenance.

4.4 – Dip tube inserting & cutting

The proper dip tube length is critical. It ensures no waste of the liquid product inside the bottle. The trigger sprayer assembled in the previous step will go to a dip tube cutting machine to insert the pipe into the trigger pump and cut the set tube length. Before the dip tube cutting process, our experts will guide customers in choosing the correct size.

4.5 – Quality control & inspection

We have a strict quality control process before delivering final products to our customers. We repeatedly perform a series of quality inspections, including but not limited to the following:

  • Appearance Check – we check the appearance for deformation, spots, burr, uniform color, and size within tolerance.
  • Wall Thickness Check – we check that the wall thickness is uniform and within tolerance.
  • Thread Matching Test – we check if the thread matches the neck finish of the bottle to ensure there is no slippage or over-tightening.
  • Liquid Leakage Test – we run multiple rounds of testing with a vacuum leak detector to ensure no liquid leaks.
  • Stability of Liquid Output Per Stroke – We check if the dispensing amount of liquid is consistent with each press.
Quality control & inspection
Packaging for trigger sprayers before delivery

4.6 – Packaging before delivery

The principle of our outer carton packaging is to make the most of the space in the shipping container possible to help our customers save shipping fees. By default, we use our standard carton to pack for shipping. But in some situations, you may require custom carton sizes and printing content on the outer carton. For example, suppose you will supply the products directly to your retailers or end customers. In that case, we are happy to provide this service.

Based on appearance and function, we divide trigger sprayers into four styles. In addition, there are two more featured styles.

It is also known as standard trigger sprayers, are the most common choice for a variety of daily cleaners. They feature a square nozzle that can be adjusted by turning clockwise or counterclockwise, allowing you to switch between “spray,” “stream,” or “off” when dispensing liquid.

In addition, based on the design of the pump body, general-purpose trigger pumps can also be divided into three types:

  • 5.1.1 Vertical Pump Type

The pump of this type of sprayer is perpendicular to the horizontal plane. Its structure is relatively simple, so the price is relatively lower. We also call it the “Economical Type.”

sectional view of trigger sprayer with vertical pump
  • 5.1.2 Horizontal Pump Type

The pump of this type of sprayer is at an angle to the horizontal. Its mechanism is more complicated than the vertical pump.

sectional view of trigger sprayer with  horizontal pump
  • 5.1.3 Inclined Pump Type

The pump of this type of sprayer is at an angle to the horizontal. Its mechanism is more complicated than the vertical pump.

sectional view of trigger sprayer with inclined pump

Foam trigger sprayers feature a nozzle to generate a dense foam. With each trigger press, the nozzle converts the liquid in the bottle into foams. The nozzle has four sides to switch, two of which are work mode and the other two are off way to prevent accidental contact by children.

In addition, a mesh made of metal or plastic can be folded upwards in front of the nozzle to dispense the foam more evenly.

The foam nozzle trigger pump is designed for large areas cleaning because it maximizes cleaning with the smallest amount. Another huge benefit is that the foam can stay on vertical surfaces longer.

sectional view of foam trigger sprayer

Mini trigger sprayers feature a unique curved shape. Its nozzle design enables it to dispense liquids in a fine mist spray. Its trigger design is perfect for two fingers and offers an excellent spraying grip. It comes with a slot lock device or left-right button to prevent leakage if not in use and protect children from accidental touch.

sectional view of mini trigger sprayer

The heavy-duty trigger sprayers have a formidable appearance. Its ergonomically designed trigger brings the user less prone to fatigue during prolonged and repeated use.

It features a rotatable and removable cover cap on the spray nozzle for flexible liquid dispensing. When fully tightening the cover cap, the nozzle is closed to prevent leakage and accidental contact by children. The liquid is distributed as a “stream” when loosening the cover cap slightly counterclockwise. The liquid is dispensed as” spray” by twisting the cover cap more.

Heavy-duty sprayers are ideal for dispensing high-viscosity liquid products.

Based on differences in appearance, we divide our existing heavy-duty sprayers into four types “A Type,” “B Type,” “C Type,” and “D Type” for customers’ better information.

All-plastic trigger sprayer means that all parts are made of entire plastic and do not contain any metal components. It is a particular feature case of a general-purpose trigger sprayer with the following differences:

  • Replace the spring from stainless steel with POM (Polyoxymethylene) plastic.
  • Replace the material of the ball valve from glass to POM plastic.

The advantage of using an all-plastic sprayer is that the internal mechanism has no metal components that could rust. It is ideal for liquid products that are not compatible with metal parts.

Sectional view of all plastic trigger sprayer

As the name suggests, you can use upside-down trigger sprayers upside down, which benefit from an upside-down pump mounted on the bottom of the sprayer. One designed upside-down pump can be applied to a batch of trigger pumps with similar structures but not to all, which makes it unique.

Check below upside-down trigger pumps that may interest you.

upside down pump for trigger sprayers
upside down trigger sprayer 1
upside down trigger sprayer 2
upside down trigger sprayer 3
upside down trigger sprayer 4
upside down trigger sprayer 5
upside down trigger sprayer 6
upside down trigger sprayer mini style 1
upside down trigger sprayer mini style 2
upside down trigger sprayer mini style 3

The nozzle/head determines the dispensing form of the liquid. There are four available forms of liquid dispensing for trigger sprayers as below:

The Spray nozzle option allows you to spray the liquid through the air with tiny drops. It fits most regular products.

The Stream nozzle option drives the liquid in a continuous line. It is excellent for delivering high concentrations of product over a small area.

Fine Mist Spray nozzle generates smaller droplets to accommodate products that require only small doses.

The Foam nozzle converts liquids into the form of foam. It is ideal for use over large areas and does so in a minimal amount.

We hope you have located your intended trigger sprayer style from Sections 5 and 6 above.

Choosing the best trigger pump for your product may take much work. In addition to style, there are some other factors you need to take into consideration:

  • Neck Finish
  • Color
  • Dip Tube Length

Let us help you make a quick decision step by step.

Schematic of bottle neck finish

First, make sure the trigger sprayer you intend to source is compatible with the neck finish of your bottle. For example, if the neck finish of your bottle is 28-410, it requires a 28-410 sprayer to match.

Two numbers indicate the screw thread neck finish. The first number represents the outer diameter of the bottle neck finish, including thread (in the above example, “28” represents the outer diameter of the neck finish is 28mm). The second number represents the thread style (in the above example, “410” represents one and a half screw thread turns).

To learn more about neck finish sizes, read our more detailed Guide to Neck Finish.

You can visit the links below to find our existing sprayers that match your bottle finish quickly.

We can apply any color to each component of the trigger sprayer. You can choose from our existing product library or customize your color to find the best visual for your packaging.

  • Transparent color – is made of purely original material without any color masterbatch.
  • Translucent color – is made with a trace amount of color masterbatch but allows light through.
  • Solid color – is made with color masterbatch and not allowing light to pass through. The most common solid colors include white, black, red, and blue.
  • Mixed color – apply different colors for the trigger, nozzle, cover, or collar on the same sprayer.
custom colors for trigger sprayers
Various color options for trigger sprayers

Proper dip tube length is critical for liquid dispensing. Too long or too short can result in a wasted product in the bottle. The optimum size is when the dip tube is naturally bent inside the bottle until its end touches the bottom edge. For trigger pumps, the dip tube is a flexible hose.

The diameter of the dip tube is available in three or four sizes depending on the trigger pump’s style and the liquid’s fluidity. For high-viscosity / thick products, the dip tube diameter is the largest.

proper dip tube length for trigger sprayers

Another critical factor to consider when cutting the dip tube is ensuring that the end does not sit flush with the bottom of the bottle. So that prevents liquid from blockage as it rises. We generally take two ways to prevent blockages from happening:

  • Cut the end of the dip tube into an angle or V shape
  • Add a filter-like device to the end of the dip tube
anti-blockage of dip tube for trigger sprayers

Safe Raw Material

Made of new PP (polypropylene) plastic, BPA free, and with no lead, you can use it safely in various situations. Compliant with FDA and CE standards.

Easy to Use

It must have a clear sign of use, including how to turn it open & close and how to adjust the nozzle to make it dispense as spray, stream, or foam.

Comfort Hand Feeling

The most significant factor affecting comfort is the design of the trigger. The trigger design considers many factors, including ergonomics, slip resistance, and dispensed contents. For example, it is usually wider for high-viscosity liquid and longer for heavy-duty use.

No Leakage

Poor-quality sprayers can leak from the bottle’s neck and the nozzle. The collar thread must perfectly match the bottle neck finish, and the sealing of the spray nozzle must be accurate and well-tested. Leak-proof must not leak during use and transportation.

Stable Output

There is a tolerance of the liquid Output per stroke, but it must be small enough. Otherwise, it will cause the waste or ineffective use, especially for susceptible liquid products.

Anti-Fatigue

Fatigue resistance is essential, especially for those who use the trigger pumps frequently. The trigger’s light pressure and ergonomic design bring a comfortable user experience.

Child-Resistant

Child protection is the top priority. Every type of our sprayers comes with a protection lock to prevent children from accidentally touch.

Reusable

Durable materials are the basis for repeated use. With great design, customers can use trigger pumps for a long time.

For a trigger sprayer with the internal mechanism already assembled (including pump, piston, spring, ball valve, and inner body), the different styles are a combination of different designs of the nozzle, trigger, collar, and outer cover replacement. There are infinite kinds of such varieties as long as we keep developing new molds for new designs.

Once you understand these combinations, you can easily customize your ideal sprayer or even create a hit with our design options & replacement. Here we take an example of a vertical pump type general purpose trigger sprayer to help you better understand our complete customization services.

custom your own trigger sprayers with nozzle options, cover options, collar options and trigger options

We can only list some of the customizations here because there are classics and outdated ones. The biggest constant is the change itself. The market always leads and forces us to keep innovating.

10. Request Free Samples and Best Quote

Popular, Hot Selling, Market Selected, and Latest Products

Some customizations shown above may be available soon, while others may take longer. If you still need to decide what style to choose, check to see if the Trigger Sprayers we’ve posted on our website fit your packaging needs. These released products are only a small subset of the customization mentioned above. But they are a selection of best sellers, the market’s choice over the years, and the latest products.

Stock Products & Free Samples

We always keep a certain amount of stock for most sprayers to ensure supply for customers with urgent needs. Suppose you are interested in any model of them. In that case, we can provide free samples to take a closer look before you place an official order.

Buy in Bulk Quantity and Save

If you find a style you like in our offering and need to buy in large quantities, you are welcome to Request the Best Quote.

Our factory is constantly developing and adding the newest offerings to meet our customers’ needs. Our sales representative and the expert team always stand by to help you find the best solution for your needs. If you still need help finding a suitable sprayer, don’t hesitate to contact us.