Diffuser

FIG 539

The diffuser is designed for installation at the bottom end of a drop tube to reduce turbulence and vapor loss during the filling operation.

Standard Features

Reduces vapor loss during fills

Does not increase filling time

 Reduces filter usage 

 Catches rags left in drop elbow

 Tank filling, manual sticking, water detection, and cathodic protection (with certain models) can be accomplished without any change in procedure or routine

 539AS, 539TC, and 539TO are slip-on style

539AT is threaded style

539EXT is for extending short drop tubes

539TC has a telescoping closed bottom

539TO has a telescoping open bottom

 

Construction Details

  • Body and plates: Aluminum or anodized aluminum
  • O-Ring: PTFE encapsulated FKM (telescoping models)

 

Certifications & Listings

CARB VR-402

Fig Suffix Size Description Weight
539AS 0200 AD 2" Diffuser, Slip-on 1.1
539AS 0200ADEVR 2" Diffuser, Slip-on, CARB EVR Approved 1.1
539ASA 0200ADEVR 2" Diffuser, Slip-on, Anodized, CARB EVR Approved 1.1
539AT 0200 AD 2" Diffuser, Threaded 1.1
539AT 0200ADEVR 2" Diffuser, Threaded, CARB EVR Approved 1.1
539ATA 0200ADEVR 2" Diffuser, Threaded, Anodized, CARB EVR Approved 1.1
539ATB 0200 AD 2" Diffuser, BSP Threaded 1.1
539AS 0300 AD 3" Diffuser, Slip-on 1.1
539AS 0300ADEVR 3" Diffuser, Slip-on, CARB EVR Approved 1.1
539ASA 0300ADEVR 3" Diffuser, Slip-on, Anodized, CARB EVR Approved 1.1
539AT 0300 AD 3" Diffuser, Threaded 1.1
539AT 0300ADEVR 3" Diffuser, Threaded, CARB EVR Approved 1.1
539ATA 0300ADEVR 3" Diffuser, Threaded, Anodized, CARB EVR Approved 1.1
539ATB 0300 AD 3" Diffuser, BSP Threaded 1.1
539AS 0400 AD 4" Diffuser, Slip-on 1.1
539TC 0400 AD 4" Diffuser, Closed Telescoping Style, Slip-on 1.1
539TC 0400 ADA 4" Diffuser, Closed Telescoping Style, Slip-on, Anodized 1.1
539TO 0400 AD 4" Diffuser, Open Telescoping Style, Slip-on 1.1
539TO 0400 ADA 4" Diffuser, Open Telescoping Style, Slip-on, Anodized 1.1
 

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CARB Certification

Morrison Bros. Co. has received approval from California’s Air Resource Board for a Phase 1 Enhanced Vapor Recovery System for Protected Aboveground Storage Tanks. Click here to get started on your CARB certification!

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