Hot Make Hot Break

A fully-valved, pressure-balanced emergency breakaway connector, the Hot Make Hot Break is designed to enable efficient pumping/transfer of fluids while providing a reliable safety system in the event of a vessel losing DP (dynamic positioning).

The connector can be positioned subsea or topside and will break away mechanically if the vessel it is connected to loses DP, even under full working pressure and with no fluid loss or line contamination, therefore delivering a high level of protection for crew, equipment and the environment.

The connector is easily operated by ROV, diver, actuator or winch. It allows operators to dispense with guillotines and other uncontrolled subsea and topside emergency disconnection systems.

The ease with which the HMHB can be connected and disconnected also significantly reduces operational downtime and deferred oil revenues.


  • All Pumping and Fluid Transfer Project Associated with Subsea and Topside Applications
  • Well Stimulation, Work Over & Intervention
  • Well Testing
  • Pressure Testing
  • Coil Tubing
  • Kill Lines
  • Cementing
  • Chemical Injection



  • Autonomous Disconnect Under Full Working Pressure
  • ROV, Diver or Winch Operable
  • Fully Pressure Balanced Design
  • Designed & Tested in line with API 6A and API 17D
  • Zero Fluid Loss During Connection or Disconnection
  • Full Bore, High Flow Path
  • High Angle Disconnect Option (Gimbal)
  • Fully Piggable Option (<90º Flow Path)
Bore Size

1”, 2” and 4”

Design Pressure

Up to 15,000 psi [1034 bar]

Water Depth

Up to 10,000 ft. [3048m]

Operating Temperature

-18ºC to 121ºC

Flow Path

90º, 45º or 30º

Male & Female End Fittings

API, Norsok or ASME Flanges
Destec or Grayloc Hubs
Fig 1502 Hammer Unions
H.P. Autoclave
Threaded (JIC or NPT)
Weld Preparation

Elastomeric Seals

HNBR, Viton (FKM) or Perfluoroelastomer (FFKM)


Super Duplex, Inconel and S316 Stainless Steel

Connection Methods

ROV - Fishtail, T-Bar, or Grab Handle
Manual Topside
Guide Wire Pull-In
Deployable Hydraulic Pull-In Tools

Guidance Methods

Male Probes & Female Funnels
Bull Horns & Bobbins
Female Probes & Male Funnels

Disconnection Methods

Hose Tension
ROV Pull-Out
Winch Wire
Hydraulic Ejection

Breakaway Control

Mechanical Locking Mechanism or Tension Pin - if required

Breakaway Load

Between ≈ 200kg at 0psi and 2 tonnes at 10,000psi with no breakaway control

Dimensions & Weights

Please refer individual data sheets

Flow Rates

For specific flow information, please contact us

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