
Oil Level Indicator Type “L“ - Brass
Douglass's L Type Level Indicator is specifically tailored for the meticulous monitoring of oil levels in tanks and containers, ensuring the seamless operation of systems reliant on precise oil management. This indicator excels in providing clear and direct visibility of oil levels, crucial for preventing operational failures in engines and gear systems.
OUR WARRANTY
100% Satisfaction Guarantee
Douglass warrants merchandise against defective workmanship and materials that become apparent within a period of 12 months from the date of receipt of invoice by the purchaser (hereinafter referred to as the warranty period). All liabilities under the warranty provisions shall expire when the warranty period has expired. Please feel free to contact us if you have any questions or comments.
SHIPPING AND PACKAGING
At Douglass, we use a unique and patented packaging method that minimizes the risk of glass damage during shipping. This system ensures your products arrive in perfect condition, just as we would like to receive them ourselves.
We understand that not all glass is the same, so we tailor our packaging techniques based on the type and quantity of products you order. This ensures maximum protection for every shipment.
Its robust design features a lateral, threaded connection that simplifies installation while offering a secure and leak-proof seal. Its adjustable height and connection specifications allow for customization to meet diverse system requirements. Made from materials selected for their compatibility with oil, it stands as a testament to Douglass's commitment to quality, offering a reliable and efficient solution for oil level monitoring in various industrial settings.
Oil level gauges are used in tanks or containers where it is necessary to maintain a minimum level of oil for the proper functioning of the system. Thanks to the easy vertical inspection of the oil level, it allows for prompt attention to the system's needs and prevents failures in engines and gear systems. The height of the oil level can be adjusted according to the process requirements, as well as connection specifications and materials. These types of oil level indicators have a threaded connection and are installed laterally on the tank wall containing the oil. Due to their direct contact with the fluid, they provide a quick indication of the level in the tubular sight glass.
Type "L" Oil Level Indicators
These indicators are commonly used in machinery and industrial applications to visually monitor the oil level in tanks, reservoirs, and engines. A type L oil level indicator is preferred over a straight one when space constraints, enhanced visibility, better protection for the sight glass, versatile mounting options, ease of maintenance, and compatibility with specific machinery designs are critical. The L-shape allows for flexible installation in compact or crowded setups, positions the sight glass for easier monitoring, and provides additional shielding from damage, making it a suitable choice for various industrial applications.
What makes Douglass different from other brands?
Douglass products are built-to-last. We do not try to save money in the components used, the quality of the products used, and the robustness of the parts. However, we understand that competition worldwide is fierce and price is a key factor for decision-makers, therefore we save money in bulk purchase, optimized logistics, optimized manufacturing processes, and high-level machinery. This helps Douglass deliver high-quality products at a very competitive price.
Oil Level Indicator L-shape - Parts and available material

| Item | Part name | Material options |
|---|---|---|
| 1 | Stopper |
|
| 2 | Glass Tube |
|
| 3 | Body |
|
| 4 | Connection |
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Oil Level Gauge Glass – Specifications
| Connection type | NPT threaded |
|---|---|
| Level indication type | Optical in internal tubular sight glass |
| Working pressure | From 0 to 150 PSI |
| Working temperature | -30°C up to 150°C |
| Connection sizes | 1/4" NPT, 3/8" NPT, 1/2" NPT |
| Minimum length | 2" Overall Length |
| Maximum length | 60" Overall Length |
| Standard length | 6" Overall Length |
