- Price:
- $139.95
- Description
- Specifications
- Reviews
- Q&A
- Documents
4-Gallon Diaphragm Pump
Professional 4-gallon backpack sprayer is individually water-tested at the factory, ensuring the lowest defect and return rate in the industry! High pressure sprayer features a polyethylene tank marked in U.S. gallons, Imperial gallons, and liters. Other features include large, easy-fill, 6” tank opening with built-in check valve in the lid to prevent spills, ergonomically-designed pump handle which rotates to upright storage position for easy transporting, long-life spray pistol with brass shut-off pin and double O rings, and brass wand. May be used for herbicides, insecticides, fertilizers, stains, sealers, oil-based products, and solvent-based products. Should not be used with acids. This multi-purpose sprayer features a patented diaphragm pump that is capable of two million strokes without leaking (equal to over two years of constant use). The diaphragm pump is designed so that there is no friction between moving parts and no nuts or bolts to tighten or adjust, thereby eliminating leaks from worn out O-rings or gaskets or loose nuts and bolts. In addition, each tamperproof pump is sealed at the factory and then tested to 70 psi before being installed. The diaphragm pump has a working pressure of 15 to 60 psi and a maximum pressure of 70 psi. Other features include a 20” brass wand; 47” industrial hose; steel pump handle, base, lever, and hardware; lid with raised carrying handle; wand clips; adjustable padded shoulder straps; adjustable brass nozzle; three flat fan nozzles; and chemical-resistant O-rings and Viton® seals. One-year warranty from the manufacturer.

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Hudson SP Series Sprayers Two Padded Straps with Hooks
Two padded straps with hooks for use with Hudson SP Series Sprayers.
- Price:
- $35.25
Hudson SP Series Sprayers 20” Brass Spray Wand
20” Brass spray wand for use with Hudson SP Series Sprayers.
- Price:
- $14.75
Hudson SP Series Sprayers 90 Degree Fitting
90 Degree fitting for use with Hudson SP Series Sprayers.
- Price:
- $8.50
Hudson SP Series Sprayers Hose Kit
Hose kit for use with Hudson SP Series Sprayers.
- Price:
- $9.35
Hudson SP Series Sprayers Lever with Hand Grip
Lever with hand grip for use with Hudson SP Series Sprayers.
- Price:
- $18.75
Hudson SP1 Sprayer Sealed Diaphragm Pump
Sealed diaphragm pump for use with Hudson SP1 Sprayer.
- Price:
- $70.25
Hudson SP2 Sprayer Sealed Piston Pump
Sealed piston pump for use with Hudson SP2 Sprayer.
- Price:
- $77.75
Hudson SP Series Sprayers Shutoff
Shutoff for use with Hudson SP Series Sprayers.
- Price:
- $21.25
Hudson SP Series Sprayers Adjustable Brass Nozzle with Holder
Adjustable brass nozzle with holder for use with Hudson SP Series Sprayers.
- Price:
- $12.95
Hudson SP Series Sprayers Tank Cap
Tank cap for use with Hudson SP Series Sprayers.
- Price:
- $12.50
Hudson SP0 Sprayer Tri-Function Pump
Tri-function pump for use with Hudson SP0 Sprayer.
- Price:
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