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Related Experiment Video

Updated: Jun 30, 2026

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices

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Published on: September 2, 2009

A spray management valve for hand-compression sprayers

J R Brown¹, M D Zyzak, J H Callahan

¹Navy Disease Vector Ecology and Control Center, Jacksonville, FL 32212-0043, USA.

Journal of the American Mosquito Control Association

|March 1, 1997

Summary

This summary is machine-generated.

Spray management valves ensure consistent flow rates for hand-compression sprayers. These valves maintain steady output, improving sprayer performance and application consistency for agricultural and horticultural uses.

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Area of Science:

Agricultural Engineering
Horticultural Science
Spray Technology

Background:

Hand-compression sprayers are widely used in agriculture and horticulture.
Maintaining consistent spray application is crucial for efficacy and resource management.
Variability in flow rates can lead to inconsistent coverage and reduced effectiveness.

Purpose of the Study:

To evaluate the performance of commercially available spray management valves.
To determine if these valves provide consistent flow rates across different hand-compression sprayer systems.
To assess the impact of different pressure ratings (15-psi and 30-psi) and nozzle types on flow rate consistency.

Main Methods:

Tested 15-psi and 30-psi spray management valves with three common hand-compression sprayers (Hudson, B&G, Chapin).
Utilized fine 45-degree flat fan nozzles with the 15-psi valve and coarse flat fan nozzles with the 30-psi valve.
Measured and recorded flow rates (ml/min) and spray-on times for each combination.

Main Results:

The 15-psi spray management valve consistently maintained flow rates of 180, 150, and 155 ml/min with the fine nozzle across the tested sprayers.
The 30-psi spray management valve ensured a constant flow rate and adequate spray-on time with the coarse nozzle for all three sprayers.
Both valve pressure ratings demonstrated reliable performance in maintaining consistent spray delivery.

Conclusions:

Commercially available spray management valves effectively provide consistent flow rates with hand-compression sprayer systems.
These valves enhance sprayer performance by ensuring predictable application rates, crucial for effective pest control and nutrient delivery.
The use of spray management valves is recommended for improving the reliability and efficiency of hand-compression sprayers.