Gages allow visual observation of liquid level and clarity. They are often used on tanks, reservoirs, hydraulic equipment, presses, large motor bearings, and pillow blocks. Their use can be extended to any application where it is necessary to guard against low liquid level.



Constant Level Lubricators automatically maintain a fixed liquid level in a bearing housing or gear box using the liquid seal principle. Constant level lubricators can be used on sleeve bearings, anti-friction bearings, gear boxes, pump housings, ventilating fans and blowers, moistening pads, and any other application demanding the maintenance of a constant liquid level. They are available with large sights for viewing liquid level and condition.


Gravity Lubricators are frequently used for chain lubrication. This reduces friction, minimizes wear, stretch, and corrosion, and can even reduce power consumption. Gravity oilers typically consist of a brush, reservoir, and adjustable precision needle valve to control the flow rate. They are toggle or solenoid operated.


Window Sights allow visual observation of liquid levels and their condition. They can be used to display fluid motion or mechanical movements, as well as to view and perform tests in a safe enclosure. Specific uses include fluid sighting on hydraulic tanks, pressure vessels, reservoirs, packaged power equipment, hydraulic lines and dipping. Their use can be applied to any application where oil or fluid inspection is essential.


PurgeX has the ability to deliver very small amounts of lubricant with each cycle and can be rapidly cycled for greater volumes; it is excellent for high speed applications. Precise volumetric delivery is achieved with the positive displacement design. There is no "after drip," which makes PurgeX a very effective lubrication solution where product contamination is a concern.








Oil Safe® products provide a safe, easy method of transporting, handling, and dispensing lubricating fluids in a wide variety of applications. These products are durable and built with High Density Polyethylene (HDPE) to perform in hostile environments. Ultra-violet and anti-static agents have been added to protect the product from ultra-violet degradation and the accumulation of static electricity.

Storage Lid
The compact and durable lid allows pre-filled drums to be easily transported and stored.

Utility Lid
This multi-purpose lid allows for rapid pouring of oils, making it ideal for topping off machinery such as crankcases or large engine blocks. Outlet hole on Utility Lid is 50 mm. Fitting an Oil Safe® Pump to the Utility Lid will allow oil to be pumped out of 3, 5, or 10 liter drum.

Mini Spout Lid
The Mini Spout Lid has an outlet diameter of approximately 7 mm, making it ideal for controlled pouring into small reservoirs or filler holes.

Stretch Spout Lid
Ideal for use with lower viscosity oils or where precise pouring is required. For precision pouring applications involving oil viscosity grades of ISO 220 or less. Spout valve has a 12 mm outlet hole.

Stumpy Spout Lid
Ideal for topping off engines, crankcases, and other applications where higher flow is required. Spout valve has a 24 mm outlet hole.

Drums - 2, 3, 5, & 10
The robust and durable drums feature a wide opening for rapid no spill filling, easy cleaning and will fit any lid.

Oil Safe® Pump
Ideal for those awkward and hard to reach oil top off applications such as motorcycles, gearboxes, lathes and milling machines. Supplied with outlet hose and anti-drip nozzle. The Oil Safe® Pump delivers 1 liter for approximately every 14 strokes. Simply fit the pump to a Utility Lid and mate with a 3, 5, or 10 liter drum. For small reservoirs and filler holes an optional Pump Reducer Nozzle is available that slides over Oil Safe® Pump nozzle. Reduces from 3/8" OD - 1/4" ID.

Spout Hose Extensions
Fitting a Stretch or Stumpy Spout Hose Extension, will enable controlled pouring into awkward or hard to reach places. The hose can be pulled from the fitting and cut to length as required.



• Spout valve regulates oil flow and reduces oil contamination due to rain, sand, and dust entering through open spout.
• Nozzles twist close to reduce contamination.
• Lids available in ten different colors for easy identification of lubricant grade and/or type: red, orange, yellow, green, blue, purple, dark green, black, gray, and tan.

• Large carry handle, which doubles up as a hook so drums can be hung up out of the way.
• See through graduated drums make liquid levels easy to see and measure.
• Wide range of spouts, hoses, and nozzles allow easy filling to awkward points.
• Buna-N o-ring seals lubricant from the external environment.
• Convoluted drum profile and large inlet hole allows for easy grip when filling.
• All lids and drums are interchangeable.
• Drum labels and lids can be color coded to provide easy identification of lubricant type or grade.




Temperature Range

-104ºF to 176ºF


High Density Polyethylene


UV stabilizers and anti-statics




For more than 140 years, the Marsh Instruments division of the Marsh Bellofram Group of Companies has been synonymous with the design, manufacture and supply of the highest quality pressure gauges and thermometers, with a portfolio that has developed into the most comprehensive gauge lines in the world. Our Marsh Instruments pressure gauges are used in countless applications where accuracy, dependability and durability are essential. Whether a standard or a specially designed pressure gauge, Marsh Bellofram stands ready to provide a highly rugged precision instrument, adaptable to wherever pressure or temperature measurements are required.

General – Severe – Precision – Process - Diaphragm



The Watchdog Desiccant Breathers are a unique particle filtration and water removal system. They prevent destructive contaminants from entering industrial equipment as air is breathed in and out due to thermal expansion or fluid level changes. They feature visual indication of the silica for replacement, which turns from gold to dark green.

By allowing only clean, dry air into industrial equipment, the Watchdog Desiccant Breathers prolong fluid life, reduce abrasive wear, downtime, and repair costs.


• Water Vapor Absorbent - the silica gel used absorbs up to 40% of its own weight.
• Color Indicator - When maximum absorption is reached the silica gel turns from gold to dark green, indicating replacement is needed. The silica gel used is chemically inert, non-corrosive, and does not contain cobalt chloride, a heavy metal. The color changing dye used is environmentally safe and meets all health and safety requirements.
• Dual Filtration System - A two micron filter (99% efficiency) is located at the top and bottom of the silica gel bed. The top filter removes particle contamination from atmospheric air and the bottom helps with dust created by the silica gel beads contacting each other.
• Activated Carbon - As air is expelled, it passes through activated carbon which removes oil vapors, fumes, and odors (except for part numbers 39131, 39132, 39133, and 39134).
• Bi-directional air flow - A 360º air flow allows air to be breathed in and out as fluid level changes or differential pressures occur. Expelled air "backflushes" the particulate filter to prolong the life of the breather.
• Durable construction - Watchdog desiccant breathers are manufactured from rugged ABS plastic and impact modified acrylic.


Nominal Air Flow Rate

35 CFM (260 gpm of fluid volume change)
10 CFM (75 gpm of fluid volume change)
100 CFM (750 gpm of fluid volume change

Particulate Filtration Level

2 micron absolute (99% efficiency)

Operating Temperature Range

-20º to 200ºF / -28º to 93ºC

Silica Gel Absorption

Up to 40% of its weight of water


ABS plastic and impact-modified acrylic


The Opto-Matic Oiler has been an industry standard for more than 75 years and is installed in millions of plants world-wide. Used to maintain accurate oil levels, the oiler has been utilized as a reliability tool in machine bearing housings.

Now, the installation of this dependable product just became more user-friendly with the introduction of the Opto Laser Level. In conjunction with the Opto-Matic Oiler, the Opto Laser Level produces an immediate impact on your lubrication program. Try the Opto Laser Level today for a quick, convenient and accurate way to install and set Trico's Opto-Matic Oiler.

Stainless steel models provide long life in corrosive environments in the chemical, pulp and paper, and mining industries.


• One piece glass reservoir ensures proper constant level function. Compared to competitive models, there is no possibility of air leakage that would cause overfilling of the bearing housing.
• Adjustable level setting allows use in many applications.
• Multiple air vent slots provide for proper functioning at all times.
• Large surge chambers helps prevent overflow of oil during machine start-up or shut-down.
• Side and bottom connections for simplified installation.


Max. Operating Temp.

250ºF Continuous


One-Piece Glass Bottle


Standard - Zinc
304 Stainless Steel - 304 Stainless


Standard - Zinc/Chromate Plate
304 Stainless Steel - Passivated

Internal Parts

Zinc Plated Steel