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Front view of LESCO 4-gallon No-Leak piston backpack sprayer showing fold-away pump handle, shoulder harness, and wand.

LESCO No-Leak 4 Gal Piston Backpack Sprayer - Model 190344

Brand: LESCO
Save 25%
$157.75
$118.31
SKU 190344
In Stock (66)

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Reliable, professional-grade backpack sprayer designed for landscape and turf care. The LESCO No-Leak 4 gallon piston sprayer combines a sealed internal pump, user-focused harness, and serviceable components so you can mix, carry, and apply chemicals with confidence.

  • Efficient agitation: Internal agitation paddles keep liquids, solids, and water-soluble solutions evenly mixed for consistent spray performance.
  • Comfortable carry system: Adjustable shoulder harness with sternum strap and waist belt reduces fatigue during long use.
  • No-leak pump design: Sealed internal piston pump keeps your back and clothing dry and prevents product loss during operation.
  • High-pressure capacity with regulator: Internal pressure chamber reaches high pressures while a 25 PSI regulator is included for precise fungicide and herbicide applications.
  • Tool-free service: Pump seals can be changed in five minutes or less without tools, minimizing downtime in the field.
  • Convenient storage and accessories: Fold-away pump handle, 20" poly wand, three nozzle tips, three-stage filters, Viton seals, and a 4" wide opening for easy filling and cleaning.

This sprayer features a durable polyethylene tank with a powder-coated steel frame for long life in professional settings. Use the included 25 PSI regulator for controlled application rates; follow product labels and the linked technical specs for safe mixing and compatible chemicals. Regularly flush the system after use and inspect Viton seals to maintain leak-free performance.

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Frequently Asked Questions

What capacity does this LESCO backpack sprayer hold?
This model holds 4 gallons (15.1 L). It's sized for professional landscape and turf applications where mid-volume coverage is needed.
How much pressure can the internal chamber handle and is a regulator included?
The internal chamber reaches high pressures and a 25 PSI regulator is included for controlled fungicide and herbicide application.
Can I service seals and replace parts in the field?
Yes. Pump seals are designed for tool-free replacement in about five minutes to minimize downtime.

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