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Chapin Piston Pump, 4-Gal. ProSeries™ Backpack Sprayer

Item No: 163122
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Product Information

Chapin Piston Pump 4-Gal. Backpack Sprayer is ideal for liquid applications

  • 4-position pressure adjustment
  • Piston pump
  • Flat Fan, cone and brass adjustable nozzles included
  • 20"L poly spray wand
  • 48"L hose

Chapin has been making professional-grade sprayers since 1902. The Chapin Piston Pump 4-Gal. Backpack Sprayer continues their reputation for excellence as an ideal sprayer for liquid pesticide applications. The Chapin 4-Gal. backpack sprayer features Viton® seals, a 20"L poly spray wand, 48"L spray hose, padded shoulder and waist straps and a four-position pressure adjustment from 15- 60 psi. Includes fan, cone and brass adjustable nozzles. Pump handle can be positioned on the right or left side. 10.2 lbs. Imported.

NOTE: Not for use with wettable powders, as they may cause damage or wear to piston pumps.

View all sprayers and parts

2016 Master Catalog: Page 295

Product Reviews


Capacity:4 gal.
Pressure Cylinder:Internal
Pump Style:Piston
Maximum Pressure:60 psi
Average Spray Height:20-25ft.
Pressure Gauge:Included
Nozzle Tip:Cone, flat, brass adj.
Filter:In handle
Herbicide Compatibility:Yes
Pesticide Compatibility:Yes
Cleaner Compatibility:Yes
Acid Compatibility:No
Backpack Sprayers Comparison Chart

Online Documents

  • Owner's Manual - Instruction Manual for Chapin ProSeries Backpack Sprayer -- Piston Pump 4-gal.
  • Parts List - Parts for Chapin Piston Pump, 4-Gal. ProSeries™ Backpack Sprayer