Chapin 63950 Mix-on-exit Backpack Sprayer 4 Gallon

Product Description

The CHAPIN 63950 is a 4-gallon mix-on-exit backpack sprayer designed for professional-grade application of fertilizers, herbicides, and pesticides in lawn, garden, and agricultural settings. It uses a dual-tank system that keeps concentrate and water separate, mixing them automatically at the point of spray. A dial controls concentrate flow rate for precise ratio adjustment. The hand-pump pressurization system reaches up to 60 psi, delivering spray coverage up to 25 feet. Three included nozzles offer cone and fan spray patterns, giving applicators flexibility across different treatment scenarios. The wand and tank are polyethylene construction, with reinforced PVC hose and Viton gaskets for chemical compatibility.

This sprayer is suited for turf care professionals, agricultural operators, nursery workers, and experienced DIYers who treat multiple zones or switch between chemical applications in a single session. The mix-on-exit system allows swapping concentrate tanks between applications without draining, cleaning, or reconfiguring the main tank. This makes it practical for properties or operations where multiple chemical products are applied in sequence. The 6-inch fill opening simplifies refilling, and the in-tank filter helps prevent nozzle clogging during extended use.

Key Features

• Mix-on-exit dual-tank design keeps concentrate and water separate until point of spray, reducing material waste
• Adjustable concentrate flow rate dial for precise mix ratio control
• 3 nozzles included with cone and fan spray patterns for versatile application
• 60 psi maximum pressure with up to 25-foot spray distance via hand-pump mechanism
• Viton seals and gaskets provide broad chemical resistance for fertilizers, herbicides, and pesticides
• 4-foot reinforced PVC hose and brass nozzle components for durability in field conditions
• In-tank filter reduces clogging during extended spray sessions

Compatibility

Designed for use with non-foam liquid fertilizers, herbicides, and pesticides in residential lawn care, garden maintenance, and agricultural applications.

Installation Notes

This sprayer is operated and serviced by landscape professionals, turf care technicians, and agricultural applicators. Before filling, verify that all seals, gaskets, and fittings are properly seated and free of damage. Always relieve tank pressure before opening the fill cap or performing any maintenance. Follow all applicable local, state, and federal regulations regarding pesticide and herbicide application, including required licensing where mandated.

Technical Specifications

• Tank Capacity: 4 gallons
• Maximum Sprayer Pressure: 60 psi
• Maximum Spray Distance: 25 feet
• Hose Length: 4 feet
• Fill Opening Size: 6 inches
• Power Source: Manual
• Spray Mechanism: Hand-pump
• Mixing System: Mix-on-Exit
• Nozzle Spray Pattern: Cone and Fan
• Number of Nozzles Included: 3
• Chemical Compatibility: Fertilizer, Herbicide, Pesticide
• Spray Liquid: Non-foam
• Tank Material: Poly
• Wand Material: Polyethylene
• Hose Material: Reinforced PVC
• Nozzle Material: Brass and Polyethylene
• Seal/Gasket Material: Viton
• In-Tank Filter: Yes
• Adjustable Nozzle: Yes
• Country of Origin: USA (subject to change)

Standard Information

• Brand: CHAPIN
• Manufacturer Part Number: 63950