Oil Gauges

EFI Level Indicating Products

Brass Standardized Oil Gauges

Our oil gauges are made in standard sizes as indicated in the table below, but they can also be made in various combinations to meet special requirements.
Specify Model and Size No. when ordering.

efi 522 efi 524 efi 526 efi 527 efi 530 and table


Brass Oil Gauges

Without Shield

model efi 202


Shielded Oil Gauge

efi 5050aWith Shut-Off Valve

Construction: Brass

Male Pipe Thread – Sizes 3/8″, 1/2″, and 3/4″ NPT

Glass can be drained, cleaned or replaced by closing valve.  It is not necessary to drain tank or reservoir.

Typical Applications: Used to indicate level of lubricating oil supply at bearings, gear boxes, crank cases, transformers, switches, etc.  Designed to operate at atmospheric pressure and a maximum temperature of 225°F.

Protected Vent: Vent hole allows free air communication with atmosphere minimizing possibility of dust or dirt getting inside gauge.

When ordering, Specify “A” Dimension

Can be furnished up to 30″ Long


High-Type Shielded Oil Gauges

Construction: Steel / Zinc Plated
Gaskets: Buna N

Pressure Rating: Atmospheric @ 225°F

Applications: Used to indicate level of lubricating oil supply at bearings, gear boxes, crank cases, transformers, switches, etc.

Protected Vent: Vent hole in cap nut allows free air communication with atmosphere – minimizes possibility of dust or dirt getting inside gauge.

Furnished with Redline Gauge Glass

efi3-8200 efi4-8200 and table


Snap Lever Sight Feed Oiler

With Snap Filler Opening

Construction: Brass

To operate cup: Raise lever to stand perpendicular.  Raise or lower the valve stem by turning the milled nut until the proper feed is obtained.  To flush bearing move lever to an angle of 45°.  Illustration shows cup with feed shut off.

model efi 33-a


Flush Mounting Shielded Gauge

Construction: Aluminum, Brass, Steel, Stainless Steel

For Operating Pressures up to 70 PSI
and Maximum Temperature 150°F

Size: 1/2″ NPT or 1/2-20 NF Thread

Furnished with Redline Gauge Glass for easy indication of liquid level

efi 80-g607 to efi89-g-607


Flush Mounting Shielded Gauges

Available with Thermometer (EFI 740) or without (EFI 5-8200)

Construction: Steel / Zinc Plated

Pressure Rating: 125 PSI @ 225°F

Size: 1/2-20 NF Thread
(Furnished with 3/8″ or 1/2″ NPT adaptors, when specified)

Furnished with Redline Gauge Glass and Buna-N O-rings

efi 5-8200 efi 740