Trigger sprayers or trigger spray pump are plastic made, liquid dispensing system. These small plastic tools are quite common and play an important role in both commercial and domestic cleaning products industries.
After years of development, there have been numerous variants of trigger sprayers in daily life. Benefiting from completed supply chain and abundant resources, China is the biggest exporting country of trigger sprayers in world. Even some well-known giants of trigger sprayer manufacturers have placed their production field in China. While buyer or international sourcing are looking at importing trigger sprayers from China or other countries, they might start consideration from design, functionality and pricing. However, do you know that we manufacturers have our own assortment method for trigger sprayers?
To know how does factories assort trigger sprayers will help you choose the most suitable dispensing tool for your cleaning products. As well as communication between you and your supplier will be more efficient and smooth.
This article will introduce different kinds of trigger sprayers from the aspect of piston pump types. If you need more guidelines to help decide which trigger sprayer is most suitable for specific liquid product, check this article.
Content included in this article:
How does trigger sprayer work?
Shroud or non-shroud trigger sprayer.
Divisionin shroud trigger sprayers.
Different classes of non-shroud trigger sprayers.
Other special trigger sprayers.
- How does trigger sprayer work?
Even there are countless designs for trigger spray pumps, Their working principle are basically the same and quite straightforward.
Firstly, we need to know trigger sprayers consist of several key parts: trigger lever, piston, pump cylinder, spring, one-way system, dip tube and nozzle valve.
When the trigger lever is once pulled back, liquid reserved in pump cylinder is compressed, as well as the spring in cylinder is compressed. Due to the pressurized liquid closed the gate of downside one-way system(usually is a glass or S/S ball), so the liquid is forced to go through a narrow barrel to the end of nozzle tip with a small orifice, generates mist spraying, stream spraying or foaming, depending on the nozzle patterns.
Afterwards, when the trigger lever is released, compressed spring starts to kick-back, drives piston push back. This motion produces instant vacuum inside pump cylinder, so one-way system works inversely, the MBR valve closed and downside glass/metal ball is lifted up. This extraction motion draws fluid from the bottom of the reservoir inside the bottle, and the cylinder is filled with fluid again to prepare for next pressurization. These two strokes of the piston contribute to the entire pump cycle.
When users pull back and release the trigger lever, we simply repeat these two motions inside trigger sprayers. This process is basically principle of most of trigger sprayers. However there is exception, for example our continuous spray bottle. Instead of hand-held trigger spray pump, the working principle of continuous spray bottle is closer to Backpack pressurized sprayers used in gardens. Anyway, we won’t elaborate in this article.
2. Shroud or non-shroud trigger sprayer
So, how do we manufacturers assort trigger sprayers easily? firstly, we simply divide them up to shroud trigger sprayer and non-shroud trigger sprayer.
As the name suggests, Shroud trigger sprayers have detachable, decorative shrouds. Shrouds can be different designs, for purpose of increased rear support, spraying comfort, and outstanding appearance. Also, shroud trigger sprayers usually have a square shaped, switchable nozzle design, and usually can be set on OFF pattern. This feature allows chemicals in bottle is secured during transportation to avoid leakage. So shroud trigger sprayer can usually also be called “shipper trigger sprayer” by customers.
Non-shroud trigger sprayers have visible pump structure, the core function part is integrated with outside skeleton. These trigger sprayers are more common seen in car care products. In contrast of shipper trigger sprayers, non-shroud trigger sprayers usually have a rotating style, round shaped nozzle design, and usually default on ON pattern by factories. So they are sometimes also called “non-shipper” trigger sprayers by customers.
Following sections we will further classify both shroud and non-shroud trigger spray pumps.
3. Division in shroud trigger sprayers
Usually, we divide shroud trigger sprayers into three types according to their pump structure.
Type.1 – ordinary pump: