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Visual Oil Inspection
Protect Your Equipment with Advanced Oil Condition Monitoring
The Visual Oil Inspection (VOI) line consists of tools that allow you to observe the health and levels of your lubricants with a clear view of oil clarity and color, sediment, and water contamination in the oil. The VOI line can be used in any industry that uses reciprocating and rotating equipment with oil reservoirs and offers immediate oil inspection. The VOI line consists of the 3-D BullsEye, several options for Oil Sight Glasses (BS&W Bowls), Oil Level Indicators, Oil Sight Glass & Level Monitors, Fluid Level Oil Sight Glasses and the LeveLock constant level oiler. As a leading oil sight glass supplier, ESCO Products is able to assist you with a gearbox oil sight glass or any other oil sight glass needs. Scroll down to shop all available options.
Applications:
- Gearboxes and Other Low-Flow Applications
- Pumps
- High-humidity Applications
- Intermittent Applications
- Limited Wash-Down Applications
- Storage Tanks
Product Selector Tool
Visual Oil Inspection
To facilitate various equipment configurations, the Visual Oil Inspection product line includes:
3-D Bullseye Sight Glass
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Allows for 360° view of oil level, color and clarity.
LeveLock Constant Oil Leveler
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Maintains the correct lubricant level for pumps and gearboxes using a constant level oiler to prevent equipment failure.
Oil Sight Glasses
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Provides early detection of contamination and allows for constant monitoring of oil condition and draining of water accumulation.
Oil Level Indicator
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This sight glass level indicator allows you to easily view oil levels when a sight window is not an option.
Oil Sight Glass & Level Monitor
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All-in-one tool used to view oil color, clarity and accumulation of water or other contaminants while monitoring oil level.
Magnetic Oil Monitors
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Visual Tools to assist in monitoring the temperature, color and clarity of oil.
Accessories & Add-ons
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Fluid level oil sight glass options, including recommended sealant, stainless steel hardware, and magnetic drain valves.
Maximizing Asset Lifecycle with Proactive Lubrication Management
Implementing a sight glass level indicator across your facility standardizes maintenance inspections and reduces the likelihood of unplanned outages. As your dedicated oil sight glass supplier, we provide the tools necessary to transition from reactive repairs to a sophisticated oil condition monitoring strategy that protects your bottom line.
Frequently Asked Questions: Industrial Oil Monitoring
A: Moving to a condition-based maintenance model using a fluid level oil sight glass allows you to change oil only when necessary. This reduces waste and ensures you catch contamination—like water or particulates—the moment it enters the system, rather than months later during a scheduled drain.
A: Absolutely. Most bearing failures are caused by lubricant contamination or improper levels. A dedicated gearbox oil sight glass provides an immediate visual cue if the oil has emulsified or if the level has dropped, allowing for intervention before the hardware is damaged.
A: For equipment that isn't inspected daily, a constant level oiler acts as an automated guardian. It compensates for minor leaks and evaporation, maintaining the precise volume required for cooling and lubrication without manual technician input.
A: They allow for "non-intrusive" inspections. Instead of opening a reservoir—which risks introducing airborne contaminants—a technician can verify the state of the machine at a glance through a sight glass level indicator, keeping the system closed and clean.