The BS&W Bowl

The 2-in-1 device to visual inspect oil and see potential debris and contaminants.

The Bowl (BS&W)

The BS&W Bowl (Basic Sediment and Water) is a 3D sight glass created specifically for the drain port. The Bowl is designed to both condition monitor and to trap and purge bottom sediment and water.


  • The rounded bottom and accompanying drain valve efficiently captures and purges both water and sediment that gravity pulls to the bottom.

  • A built-in magnet captures and displays ferrous wear debris.
  • A shield protects the outside of the valve from accumulating debris and impacts.

  • Like other Luneta products, the Bowl provides a nearly 360° view of the oil thanks to the ultra-durable, crystal-clear and chemically resistant Tritan™ material.
  • A built-in hex makes installation easy with a socket wrench or pliers.
  • Two eyelets are provided for tagging useful information such as oil type and an oil colour change card.

  • All of these features are packed into a single molded piece to eliminate leak points. 



Part #DescriptionABSV
BOWL.038.MAG        3/8" NPT Magnetic         3.7"     2.2"     2 1/8"         1.0 fl.oz.    
BOWL.050.MAG1/2" NPT Magnetic3.7"2.2"2 1/8"1.0 fl.oz.
BOWL.075.MAG3/4" NPT Magnetic3.7"2.2"2 1/8"1.0 fl.oz.
BOWL.100.MAG1.0" NPT Magnetic3.7"2.0"1 13/16"1.0 fl.oz.
BOWL.150.MAG1 1/2" NPT Magnetic3.0"2.0"1 13/16"1.0 fl.oz.


A = Width, B = Length, V = Volume



Application:Drain ports
Volume: 1.0 fl. oz.
Threads: Varies (see table)
Dimensions:Varies (see table)
Shipping Weight: 12 oz. each
Recommended Temp. Range:-40°F to 200°F (-40°C to 93°C)
Max. Operating Pressure65 psi./4.5 bar
Sampling/Drain Valves:                                                  
Drain valve, spiral to open, turn to lock
Materials: Bowl: High-impact Tritan™(a crystal-clear copolyester); Adapter: zinc-plated steel; Drain valve: brass; Magnet (optional): Strong neodymium rare earth magnet
Outdoor Compatibility:UV-resistant to protect against long-term sun exposure
Chemical Compatibility: Resistant to mineral and synthetic oils that are compatible with fluorocarbon elastomers (Viton™) and PMMA (acrylic) plastic



4x strongerMade of high-impact Tritan™, a chemically resistant, crystal-clear copolyester
Single-piece DesignMolded-in 1.5" NPT male threads to elminate potential leak points
360˚ ViewLarge viewing surface with no obstructions for easy viewing of oil
Rounded Bottom                  Patent-pending design for easy viewing and purging of sediment and water
Hex NutEasy wrench installation
MagnetFor capturing and viewing of wear debris
Brass Drain ValveSpiral open, turn to lock
ShieldMolded to protect the valve
EyeletsAttach ID tags and other information



  • Check and remove any debris from inside the Bowl
  • Remove protective red cap from the magnet on the Drain Valve.
  • Apply thread sealer to all threads before installation.
  • Use a 2-1/8" wrench to tighten the Adapter into your drain port.
  • Use a 9/16" wrench to tighten the Drain Valve into the Bowl.
  • Do not over-tighten once the hex bottom out.

Additional Information

The Bowl BS&W
The Bowl BS&W application
The Bowl BS&W application

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FAQ about the Bowl

What is a BS&W Bowl?

The BS&W Bowl (Bottom sediment and water bowl) is a powerful condition monitoring, tool that is both a sight glass and a contamination trap designed specifically for drain port applications.

Of what material is the Bowl made of?

The Bowl is made of impact-resistant Tritan™, stronger than other drain port sight glasses, crystal clear and chemically resistant. The material was originally formulated for the Food and Beverage Industry, because of its strength and chemically stain resistance.

What thread sizes are available?

Available thread sizes are: 3/8", 0.5", 0.75", 1", and 1.5" NPT Magnetic.


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