

JOHNDOW AIR-OPERATED FLUID DISPENSER (5 GAL)
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Fluid Dispenser - JohnDow Air-Operated Portable System (5 Gallon)
Pneumatic Fluid Dispenser with Rolling Mobility
Stop wrestling with heavy fluid containers and unreliable hand pumps. This pressurized fluid dispenser uses shop air to deliver motor oil, ATF, gear oils, and synthetic fluids exactly where you need them. The portable design with rolling wheels lets you move fluids around your garage or service bay without continuous air supply connections.

Key Features and Benefits
Applications
Ideal for automotive professionals and serious DIY mechanics who need efficient fluid management:
- Motor oil changes and top-offs in service bays
- Transmission fluid and ATF dispensing
- Gear oil and differential service
- Synthetic oil handling for high-performance vehicles
- Mobile fluid service for multiple work stations
- Clean fluid transfer without contamination
Specifications
| Tank Capacity | 5 Gallons (4-gallon functional capacity) |
|---|---|
| Construction Material | Heavy-duty steel |
| Maximum Working Pressure | 145 PSI |
| Air Inlet Connection | 1/4" NPTF |
| Delivery Hose Length | 6.5 feet with dispensing gun |
| Wheel Size | 7-inch fixed rear wheels |
| Fill Opening | 2-inch spout with cap |
| Weight | 48 pounds |
Setup Requirements
This fluid dispenser is ready to use with minimal setup required:
- Position the dispenser in your work area using the 7-inch wheels
- Connect shop air line to the 1/4" NPTF inlet
- Fill the tank through the 2-inch spout opening
- Pressurize to desired working pressure (maximum 145 PSI)
- Disconnect air supply and begin mobile dispensing
Requires shop air compressor with minimum 145 PSI capacity for optimal performance.
Ready to Upgrade Your Fluid Management System?
Join thousands of automotive professionals who trust JohnDow pneumatic dispensers for reliable, portable fluid handling. This air-operated system pays for itself by reducing spills, saving time, and eliminating the hassle of manual pumping.
Get your professional-grade fluid dispenser delivered and start working smarter today.
Frequently Asked Questions
Which fluid dispenser is best for automotive shops?
You'll love how this air-operated system eliminates manual pumping while providing complete mobility around your shop. Unlike gravity-fed dispensers that require elevated positioning, this pressurized system delivers consistent flow at any height and location.
How does this compare to hand pump fluid dispensers?
This air-operated dispenser offers significant advantages over hand pump models. While manual dispensers require constant pumping effort and can cause fatigue during large jobs, this system uses shop air for effortless operation. Once pressurized, you get continuous dispensing without physical effort.
What types of fluids can I use with this dispenser?
This dispenser works perfectly with motor oil, synthetic oil, ATF (automatic transmission fluid), gear oil, and other light automotive fluids. The steel construction and proper sealing make it suitable for petroleum-based fluids commonly used in automotive service.
Do I need to keep it connected to air pressure while dispensing?
No, that's the beauty of this pressurized system. Simply connect shop air to charge the tank, then disconnect and roll it wherever you need to dispense. The internal pressure maintains dispensing capability without continuous air supply, giving you complete mobility around your workspace.
How do I know when the tank needs refilling?
The built-in sight tube lets you see the fluid level at a glance, so you always know how much fluid remains. This eliminates guesswork and prevents running empty during important jobs.
About the Brand
