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1/4" NPT Polycarbonate Mini Lubricator is a visible drip type air line lubricator that meters oil into low air flow circuits, so downstream tools receive consistent lubrication without taking much space in the system layout. This Milton Industries mini precision lubricator uses an external adjustment screw to control oil feed, giving installers a straightforward way to set drip rate for a given tool load. The unit is designed for low air flow applications where space is limited, so it fits compact manifolds and tight compressor setups common in small shops. A bypass system allows full air flow with minimum pressure drop, which helps maintain tool performance while the lubricator is in line. The same bypass system also assures proper air and oil mixture over the full operating range, supporting stable lubrication as flow conditions change during use.
This mini lubricator uses a 1/4" national pipe thread connection, so it ties into 1/4" NPT air lines commonly found in small-shop and point-of-use circuits. Milton Industries specifies the product as a mini precision lubricator for low air flow applications, aligning it to branch circuits rather than large trunk lines. The unit requires approximately 1 SCFM of air flow to deliver oil, so it functions as intended when positioned where that flow level is present during tool operation. A maximum inlet pressure of 250 pounds per square inch is given, along with a maximum inlet pressure of 150 pounds per square inch, defining the stated pressure parameters for installation planning. The 1 ounce polycarbonate bowl capacity indicates how much oil can be held in the bowl, which relates directly to how often refilling will be needed in regular shop use.
The Milton Industries S-1150 is identified as a 1/4" NPT mini precision lubricator, placing it within air line components for filters, regulators, and lubricators where compact size is important. Because it is designed for low air flow applications where space is limited, it suits short runs from regulators to individual tools or small workstations rather than large distribution headers. The visible drip type design makes it practical near points where technicians can see the sight, helping them confirm oil presence during normal operation. Two 1/8" NPT gage ports are provided, so this unit can sit in segments of the system where pressure monitoring is useful, such as just downstream of a regulator feeding one or more air tools. The 1 ounce polycarbonate bowl supports these localized installations by providing a modest oil reservoir that still offers visibility of oil level and condition during routine use.
The visible drip type lubricator format, combined with an external adjustment screw, directly supports creating a repeatable oil feed setting by giving a clear visual indicator that matches each adjustment movement. This aids installers when dialing in lubrication for specific tools such as nailers or light pneumatic devices that share similar low air flow needs. The bypass system is designed to allow full air flow with minimum pressure drop, which helps keep downstream pressure closer to regulator settings and reduces the risk of starving tools while oil is being delivered. That same bypass system assures proper air and oil mixture over the full operating range, backing up consistent lubrication as flow varies from idle to active tool use. By requiring approximately 1 SCFM of air flow to deliver oil, the lubricator sets a defined operating condition that can be matched to typical tool demand in small-shop branches. When combined with the 1/4" national pipe thread and 1 ounce polycarbonate bowl, these elements create a compact lubricator that supports predictable performance in confined, low volume sections of compressed air systems.
The S-1150 is a 1/4" NPT mini precision visible drip type lubricator, so oil delivery can be visually monitored while it meters lubrication into low air flow lines.
The 1/4" NPT Polycarbonate Mini Lubricator uses an external adjustment screw, allowing direct control of oil feed rate to match the needs of specific low flow tools.
The Milton Industries mini precision lubricator requires approximately 1 SCFM of air flow to deliver oil, so it operates as intended in circuits that reach that flow level.
The mini lubricator lists a maximum inlet pressure of 250 pounds per square inch and also a maximum inlet pressure of 150 pounds per square inch as stated operating limits.
The polycarbonate bowl has a 1 ounce capacity, which sets the available oil volume between refills when the lubricator is used in ongoing shop air service.
This Milton Industries lubricator uses a 1/4" national pipe thread main connection and provides two 1/8" NPT gage ports for installing gages in the air line.
The 1/4" NPT Polycarbonate Mini Lubricator from Milton Industries combines a mini precision body, visible drip type operation, and an external adjustment screw, so installers can pair compact size with controllable oil feed on tight air lines. Its design for low air flow applications where space is limited allows it to serve as a focused lubricator on branch circuits instead of a bulk system component. With a bypass system that allows full air flow with minimum pressure drop and a 1 ounce polycarbonate bowl, it supports consistent lubrication while preserving downstream performance. For projects built around 1/4" national pipe thread connections and approximate 1 SCFM oil delivery requirements, this S-1150 mini lubricator offers a clearly specified option for shaping reliable air tool lubrication.
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