Marine Breakaway Coupling for Ship & Offshore Loading

The TODO NGX Marine Breakaway Coupling is a high‑safety marine breakaway coupling designed for offshore and ship‑to‑shore transfer operations.

Engineered specifically for dynamic marine environments, this offshore breakaway coupling prevents spillages and protects equipment during the loading and unloading of hazardous liquids. The coupling safely disconnects when excessive straight‑pull force is applied, reducing the risk of hose rupture caused by vessel movement, tidal motion, or operational error.

Like TODO’s standard NGX breakaway coupling, the marine version delivers a market‑leading flow rate with minimal pressure drop, ensuring efficient and safe transfer in demanding offshore conditions.

What Is a Marine Breakaway Coupling?

Offshore and marine transfer operations are exposed to dynamic forces that are not present in onshore environments. Vessel movement, tidal variation, and wave action can introduce significant stress on hoses and transfer systems during loading and offloading.

Marine breakaway couplings are a critical safety component within marine transfer systems, designed to disconnect in a controlled manner when excessive straight‑pull forces occur, preventing equipment damage and environmental spills. Unlike standard marine couplings or marine flexible couplings, which accommodate movement within a system, breakaway couplings provide an additional safety layer by isolating the flow during abnormal load events.

The NGX Marine Breakaway Coupling is engineered specifically for offshore applications, remaining stable during normal marine motion while disconnecting reliably only when abnormal loads are detected. This makes it a trusted solution for ship‑to‑shore transfer, bunkering, and other marine loading operations involving hazardous liquids.

The NGX Breakaway Coupling boasts a rapid closure mechanism to minimize product loss and is ideal for a variety of applications:
• Offered in sizes from 2-4 inches
• Leading market flow rate and low pressure drop
• Encapsulated shear bolts for reliable operation
• Functions independently from shut-off safety systems
• Effective release function at any force angle
• Simple on-site reset capability

Whether used in chemical transfer, tanker loading, or terminal operations, NGX breakaway couplings deliver proven performance and reliable accident protection.

Customizable Options for Your Breakaway Coupling Needs

The standard units come with 3mm shear pins, which typically provide optimal stress resistance. However, as with all TODO products, NGX Breakaway Coupling can be customized with either aluminum or high-grade stainless steel, and fitted with a selection of O-ring materials to ensure perfect compatibility with your application.

Product	Max Working Pressure	Product Test Pressure	Working Temperature Range	Certification	Mounting	Sizes	Threads	Flanges	Materials	O-ring Grades	Options	Others
TODO GAS	25 bar (363 psi)	37.5 bar (544 psi)	-20°C to +80°C (-4°F to +176°F) standard; -45°C to +150°C (-49°F to +302°F) options	2014/68/EU - Pressure Equipment Directive (PED)	Thread or flanged variants available					Viton (FKM) 90 Shore	Pressure Equalisation Valve (PEV), colour coding, selectivity, caps and plugs, handle options.
TODO 45	Up to 10 bar (580 psi)	Up to 15 bar (870 psi)	-20°C to +80°C (-4°F to +176°F)		Thread or flanged variants available	2.5" (DN65)			Aluminium, Stainless Steel	Viton (FKM), FMVQ
NGX	Up to 40 bar (580 psi)	Up to 60 bar (870 psi)	-20°C to +80°C (-4°F to +176°F)	2014/68/EU - Pressure Equipment Directive (PED)	Thread or flanged variants available	2" (DN50), 3" (DN80), 4" (DN100)			Aluminium, Stainless Steel	Viton (FKM), NBR, EPDM, Chemraz, Kalrez and many others
TODO MATIC	Up to 25 bar (363 psi)	Up to 37.5 bar (544 psi)	-20°C to +80°C (-4°F to +176°F) standard; -45°C to +150°C (-49°F to +302°F) options	2014/68/EU - Pressure Equipment Directive (PED)	Thread or flanged variants available	1" (DN25), 2" (DN50), 2.5" (DN65), 3" (DN80), 4" (DN100), 6" (DN150)			Aluminium, Brass, Stainless Steel - others on request	Viton (FKM), NBR, EPDM, Chemraz, Kalrez and many others	Pressure Equalisation Valve (PEV), Colour coding, Selectivity, Caps and plugs, Locking mechanism, Magnetic switch, Rotational block, Handle options
NGX MARINE	Up to 40 bar (580 psi)	Up to 60 bar (870 psi)	-20°C to +80°C (-4°F to +176°F)			2" (DN50), 3" (DN80), 4" (DN100), 6" (DN150)	BSP (ISO 228), NPT (ANSI B1.20.1), Others on request	PN10/16, PN25/40 (EN 1092-1), ANSI Class 150/300 (ANSI B16.5), Others on request	Stainless steel only	Nitrile (NBR or Buna), Viton (FKM), EPDM, Kalrez (FFKM), FMVQ, Chemraz (FFKM)
PTC	Up to 25 bar (363 psi)		-20°C to +80°C (-4°F to +176°F)			2" (DN50), 3" (DN80), 4" (DN100)			Stainless steel only	Nitrile (NBR or Buna), Viton (FKM), EPDM, Kalrez (FFKM), FMVQ, Chemraz (FFKM)
FUEL NOZZLES	Up to 10 bar (145 psi)		-20°C to +80°C (-4°F to +176°F)			2" Body	BSP (ISO 228), NPT (ANSI B1.20.1), Others on request		Aluminium body, Brass attachments	Viton (FKM)	TODO Snap, W2" - 7
BALL VALVES	Up to 10 bar (145 psi)		-20°C to +80°C (-4°F to +176°F)			2" (DN50), 3" (DN80), 4" (DN100)	BSP (ISO 228), NPT (ANSI B1.20.1), Others on request		Aluminium	Nitrile (NBR or Buna), Viton (FKM), EPDM, Kalrez (FFKM), FMVQ, Chemraz (FFKM)	One-Way and Two-Way with manual or pneumatic operation	Blank flanged, TW, Weld end, Without connection
SWIVELS			-20°C to +80°C (-4°F to +176°F)			0.75" to 4"	BSP (ISO 228), NPT (ANSI B1.20.1), Others on request	PN10/16 (ANSI B16.5), Others on request	Aluminium, Brass, Stainless Steel, Others on request	Nitrile (NBR or Buna), Viton (FKM), EPDM, Kalrez (FFKM), FMVQ, Chemraz (FFKM)

• Compliant with 2014/68/EU - Pressure Equipment Directive (PED)
• Thread or flanged mounting options
• Material choices: Aluminium and Stainless Steel

The NGX Breakaway Coupling excels in enhancing safety and reducing losses when handling valuable or hazardous materials, with a working temperature range of -20°C to +80°C and varied working pressure based on the model.

Max. Working Pressure Product Test Pressure Working Temperature

Up to 40 bar (580 psi) Up to 60 bar (870 psi) -20°C to +80°C

-4°F to +176°F

The NGX Marine Breakaway Coupling is designed for use in demanding marine and offshore transfer operations, including:

- Ship-to-shore fuel transfer

- Marine bunkering operations

- Offshore tanker loading and offloading

- Chemical and hazardous liquid transfer

- LNG and petroleum terminal operation

Offshore

Trusted by oil majors for decades, TODO dry‑break and dry disconnect couplings are known for their field‑proven durability.

FAQs

A marine breakaway coupling disconnects when excessive straight‑pull force is applied to the transfer line. In offshore and marine environments, this can occur due to unexpected vessel movement, tidal changes, or operational error during loading and unloading. Once the preset load limit is exceeded, the coupling separates safely and closes both ends to minimise spillage.

NGX Marine Breakaway Coupling for Ship & Offshore Loading

What Is a Marine Breakaway Coupling?

Features & Benefits

Ranges & Variants

Technical Information

Applications

Offshore

Downloads

TODO NGX Marine Breakaway Coupling Product Flyer

TODO NGX Technical Information

TODO Generic Catalogue

TODO Service Catalogue

FAQs

What causes a marine breakaway coupling to disconnect?

Do marine breakaway couplings require power or control systems?

What are typical marine breakaway coupling applications?

How is a marine breakaway coupling different from a marine flexible coupling?

What standards or industries are marine breakaway couplings used in?

DRY-BREAK Couplings TODO-MATIC

NGX Breakaway Coupling - Spill-Prevention and Safety Coupler

Safety Caps: Collaborative Chemical Containment