Oil Sight Glass Store

Oil Sight Glasses by PK 3/8″x 1/4″ 145 brass valve + bushing-12 pack ($49.95 each)


Oil sight glasses by PK Machine are used for visual oil monitoring and inspection in pumps, motors, gear boxes and turbines.  They easily attached to equipment with NPT on one side and a drain valve on the other.  They provide constant bearing visual oil inspection.  Made from optical grade transparent acrylic construction, our sight glass allows for clear visual oil monitoring.  Chemically compatible with gear, mineral and synthetic oils, our oil sight glass can be connected to pumps, gear boxes, turbines, motors or any lubricated sump or reservoir.  They are chemical and corrosion resistant.  They can operate to 200 degF and 300 psi

Need visual oil monitoring and analysis for your pump? Oil sight glasses by PK will monitor oil contamination, collect sediment, view discoloration and water contaminate levels.  Oil sight glasses are also called bottle oil sight glasses, water finders, deb jugs, sediment glass and sediment bottles.


Oil sight glasses with brass valve + bushing 3/8″ x 1/4″ NPT, 1 oz (PK1S-3814-0145)

Oil sight glasses by PK are a transparent 1 ounce tube that is installed on a pump, motor, turbine or reservoir.  There are several different drain valve lock options.  The oil sight glass pictured option has a brass pet cock valve.  The 3/8” equipment connection is reinforced with a metal bushing.

Who uses an oil sight glasses?

Oil condition monitoring provides all plant personnel the insight to spot problems long before it becomes a costly repair.  What are the benefits of an oil sight glass?  There are a variety of benefits of the oil sight glass for plant personnel.  For example, extend oil drain intervals safely.  Scheduled maintenance to reduce unplanned downtime.  There is an increase efficiency to grow the company’s bottom line.

How is an oil sight glass used on a pump, turbine or gear box?

Attach an oil sight glass to the pump.  The dimensions of an oil sight glass are standard NPT on one side.

  • Volume: 1 ounce
  • Overall Length: 2 3/8”
  • Outside Diameter: 1¾”
Additional information
Weight 3 lbs
Dimensions 8 × 6 × 4 in

1/2" x 1/4" (12 pack) NPT, 1300 aircraft curtis valve


1 oz 3/8 ” X 1/4”

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