FIG 718
Liquid Level Gauge
The Morrison 718 liquid level gauge is designed for measuring liquid level in an aboveground storage tank containing diesel, fuel oil, oil, and used (waste) oil. The gauge has also been approved for anti-freeze, brake fluid, windshield washer fluid, and automatic transmission fluid. The 718 mounts on top of the tank and is activated by a float connected to a cable.

Product Video
Product Features
Standard Features
718
2” male NPT threads
Float installs through a 2” female threaded opening or a schedule 40 riser*
Measurement readout in inches
Two models accommodate tank depths up to 72” and 108”
Easy float length adjustment (1” or 2” increments)
Vapor space sealed to prevent lens fogging
UV resistant measurement tape
Approximately 12” of extra cable to accommodate installations with riser pipes
Contact Customer Service for interest in gallon and metric models
*Do not use with schedule 80 pipe
718G
Gallon models are designed for tanks of specific dimensions
718M
This model accommodates tank depths up to 275CM
Easy float length adjustment (2.5CM or 5CM increments)
Construction Details
- Body: Cast aluminum
- Spring: 301 stainless steel
- Float: Polypropylene and aluminum (standard float); aluminum (gasoline-compatible float)
- Shaft bushing: Stainless steel
- O-ring: FKM
- Cable: 30# braided microfilament
- Lens cover: Lexan
Product Ordering Instructions
Figure | Suffix | Description | Weight (lbs) |
718 | 7200 AG | Liquid level gauge for tanks up to 72” | 2.0 |
718 | 7250 AG | Liquid level gauge for tanks up to 72”, with gasoline-compatible float | 2.0 |
718 | 10800 AG | Liquid level gauge for tanks up to 108” | 2.0 |
718 | 10850 AG | Liquid level gauge for tanks up to 108”, with gasoline-compatible float | 2.0 |
Gallon Models | 2.0 | ||
718G | 27500 AG | Liquid level gauge. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 27550 AG | Liquid level gauge, with gasoline-compatible float. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 50000 AG | Liquid level gauge. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 50050 AG | Liquid level gauge, with gasoline-compatible float. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 52000 AG | Liquid level gauge. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 52050 AG | Liquid level gauge, with gasoline-compatible float. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 56000 AG | Liquid level gauge. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 56050 AG | Liquid level gauge, with gasoline-compatible float. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 100000 AG | Liquid level gauge. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 100050 AG | Liquid level gauge, with gasoline-compatible float. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 100001 AG | Liquid level gauge. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 100051 AG | Liquid level gauge, with gasoline-compatible float. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 200000 AG | Liquid level gauge. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 200050 AG | Liquid level gauge, with gasoline-compatible float. Click here for specific tank shape diagrams and capacity information. | 2.0 |
718G | 2800C AG | Liquid level gauge, CSI*, Nominal | 2.0 |
718G | 2805C AG | Liquid level gauge, CSI*, Nominal, with gasoline-compatible float | 2.0 |
718G | 5000C AG | Liquid level gauge, CSI*, Nominal | 2.0 |
718G | 5005C AG | Liquid level gauge, CSI*, Nominal, with gasoline-compatible float | 2.0 |
718G | 10000C AG | Liquid level gauge, CSI*, Nominal | 2.0 |
718G | 10005C AG | Liquid level gauge, CSI*, Nominal, with gasoline-compatible float | 2.0 |
Metric Models | |||
718M | 27500 AG | Liquid level gauge for tanks up to 275 CM | 2.0 |
Ullage Models | |||
718U | 718U—7200 AG | Liquid level gauge for tanks up to 72”, ullage | 2.0 |
718U | 718U—7250 AG | Liquid level gauge for tanks up to 72”, ullage, with gasoline-compatible float | 2.0 |