Mann Tek Safety Break-away Coupling Industrial 150# Flange

Mann Tek Safety Break-away Coupling Industrial 150# Flange

Part Number SBC300ALFL
Material Aluminum
Seal FKM (FPM)
Size 3"
DN Size 80.0
Length 8.5" (216mm)
Width 6.8" (173mm)
Working Pressure 230 PSI at 70°F (21°C)
Flow 650 GPM (2460 LPM)
Optional Pkg/Box Qty 1
Weight Lb 17.0000


  • Coupling is designed to minimize spillage and damage associated with drive away and pull away incidents.
  • Typical applications: loading rack


  • Designed to be installed between a fixed point (pipe, pump, manifold) and a hose
  • Coupling automatically senses an excessive load, closes the valves and disconnects
  • High flow rate / low pressure drop

Available Options

  • Also available in NPT Thread, BSP thread, DN Flange, 300# ASA Flange, Grooved Ends or any combination thereof. Consult Dixon for more information.
  • Optional Non-closure Design available, consult Dixon for more information. The non-closure design is an economical alternative which allows the coupling to break away due to pull-away/drive-away incidents thus protecting piping systems and equipment. The design allows spillage of product in these instances due to the lack of valving in the coupling. Useful applications where non-hazardous product is being conveyed and where there are no environmental concerns.

How it works

  • The safety break-away valve consists of two halves, each with a valve that has an O-ring seal. When the safety break-away couplings separate, it allows the valves to close. The two valves close rapidly, minimizing exposure to personnel and the environment.
  • Safety break-away couplings have three external break bolts. In the case of axial tension all of the bolts take up the force corresponding to the break force on the hose with a safety margin. Non-axial forces concentrate the tension forces more strongly on one bolt, so that the safety break-away coupling reacts in a natural way to the reduction of the hose break forces.

Repair Kits
Part # Description Includes Item # Qty
O-ND4-01 3" FKM Replacement O-ring Kit
O-ND4-02 3" Nitrile Replacement O-ring Kit
O-ND4-04 3" Kalrez Replacement O-ring Kit
O-ND4-17 3" Chemraz Replacement O-ring Kit
S-N4D-44-15 3" Replacement Bolt Kit for Aluminum Breakaway - 15 kN Bolts

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