Ldi Industries G652-3 Vented Oil Level Sight Gauge

Product Description

The LDI INDUSTRIES G652-3 is a vented oil-level indicator and sight gauge designed for monitoring fluid levels in industrial and mechanical equipment reservoirs. The unit features a union coupling design with a Buna-N elastomer seal, providing reliable sealing performance in petroleum-based oil environments. The sight length measures 1.375 inches with a 0.375-inch thread size for straightforward installation into standard threaded ports. The center-of-base length measures 2.375 inches. Vented construction allows pressure equalization during normal equipment operation. Licensed tradespeople and maintenance technicians working on gear reducers, compressors, pumps, and similar oil-lubricated machinery are the primary installers of this component.

This sight gauge is suited for stationary industrial equipment that requires continuous or periodic visual oil level verification without removing access covers or drain plugs. The union coupling design simplifies removal and reinstallation during scheduled maintenance intervals. Applications include gear boxes, hydraulic reservoirs, compressor crankcases, and similar enclosed lubrication systems where a threaded port is available. The Buna-N seal material is compatible with standard mineral-based and many synthetic lubricating oils commonly found in industrial service.

Key Features

• Vented design allows pressure equalization in the reservoir during operation
• Union coupling construction simplifies removal for cleaning or inspection without full disassembly
• Buna-N seal material provides reliable compatibility with petroleum-based lubricating oils
• 0.375-inch thread size fits standard threaded reservoir ports
• 1.375-inch sight length with 2.375-inch length to center of base for proper positioning in typical reservoirs

Compatibility

Designed as an OEM-style replacement or new-installation sight gauge for industrial equipment reservoirs equipped with a 0.375-inch threaded port accepting a union coupling style indicator.

Installation Notes

Installation is typically performed by a qualified millwright, industrial maintenance technician, or mechanical tradesperson. Shut down and de-energize the equipment and allow the oil reservoir to reach a safe handling temperature before removing the existing gauge or fitting. Drain oil to below the port level prior to removal to avoid spillage. Apply appropriate thread sealant compatible with the system lubricant and torque to the fitting manufacturer recommendation based on the port material; do not over-tighten into cast iron or aluminum housings.