How to choose the right Trigger Sprayers according to the type of liquid?

In modern industrial production and daily life, Trigger Sprayers are the core components of liquid packaging, and their performance directly affects the efficiency of use and user experience. As a key component of the sprayer system, the nozzle selection needs to be systematically analyzed based on the physical properties, chemical properties and usage scenarios of the liquid.
1. Correlation model between fluid properties and nozzle parameters
The influence of liquid type on nozzle adaptability is mainly reflected in physical and chemical indicators such as viscosity coefficient, surface tension, and corrosiveness. Experimental data show that when the viscosity of the liquid exceeds 200cps, the atomization efficiency of the traditional 0.8mm aperture nozzle will be attenuated by more than 35%. For mixed liquids containing suspended particles, the nozzle flow channel design must meet the turbulent conditions of Reynolds number > 4000 to effectively avoid particle deposition. Chemically corrosive liquids require the nozzle material to have acid and alkali resistance. Polypropylene (PP) material can maintain stable performance within the pH range of 1-12, while polytetrafluoroethylene (PTFE) material is required for strong acid and alkali environments.
2. Nozzle selection scheme for typical liquid types
Aqueous solution (cleaner/disinfectant)
It is recommended to use a multi-stage atomizing nozzle with an aperture range of 0.5-1.2mm. Laboratory tests show that water-based liquids containing surfactants can form uniform droplets with a diameter of 20-50μm at an aperture of 1.0mm and a spray angle of 45°, increasing the coverage area by 40%. It is recommended to choose a sealing system with a spring return structure to prevent blockage caused by liquid crystallization.
Oily liquid (lubricant/pesticide formulation)
It is necessary to configure a pressure-compensated nozzle with anti-swelling nitrile rubber seals. For oils with a viscosity of 50-300cps, it is recommended to use a progressive spiral flow channel design with a large aperture of 1.5-2.0mm to maintain a stable flow rate at a pressure of 0.3MPa. Agricultural sprayers need to take anti-drip design into consideration, and the addition of a suckback valve can control the residual amount to less than 0.2mL.
High viscosity fluid (cream/adhesive)
When the viscosity exceeds 500cps, a piston pump nozzle should be selected and equipped with a preheating device. It is recommended that industrial-grade sprayers be made of 316L stainless steel, and the flow channel design must meet the non-Newtonian characteristics of shear-thinning fluids. The essence spray in the beauty industry can use a 0.3mm micro-hole nozzle, and cooperate with a 200-mesh filter to ensure atomization uniformity.
3. Systematic selection and verification process
Establish a three-stage verification system of "physical detection-simulation test-scenario verification". First, the liquid characteristic parameters are measured by a rotational viscometer and a surface tension meter; secondly, 2000 continuous injection tests are carried out on the simulation platform to record the flow stability data; finally, a two-week working condition verification is carried out in a real use environment, focusing on monitoring the spray morphology, liquid discharge accuracy and component durability.
4. Technology development trends and innovation directions
The introduction of micro-electromechanical system (MEMS) technology has enabled the nozzle aperture accuracy to reach ±5μm level, and the piezoelectric ceramic-driven nozzle can achieve 200 pulse injections per second. The intelligent adaptation system uses built-in flow sensors and AI algorithms to automatically adjust the aperture size and injection pressure, allowing a single device to adapt to a variety of liquid types and increasing equipment utilization by more than 60%.