Petrobras Homologation

Master Flo is the first choke manufacturer to pass the Petrobras Homologation

Petrobras Homologation

The Master Flo P4-10K Bolted Bonnet Subsea Choke Valve is the first choke valve in the world to pass the demanding Petrobras Homologation

Petrobras homologation test valve

Maximum Pressure: 10,000 psi (69,000 kPa)

Temperature Range: 32°F to 180°F (0°C to 82°C) 

Depth Rating: 8,200 feet (2,500 meters)

Back Pressure: 3,630 psi (25,000 kPa)

1,000 cycles including:

  • 160 ambient cycles
  • 220 hot cycles
  • 20 cold cycles
  • 400 hyperbaric cycles
  • 200 pressure pulses

Zero leakage acceptance criteria

Cv/FL testing

Internal jamming test

Hydraulic and torque signatures

Subsea Testing Flow Loop June 23 2020-10.jpg

Cv Testing


Petrobras Hyperbaric testing

Hyperbaric Testing


Petrobras homologation internal jamming

Internal Jamming Test


FL Test Flow Loop

FL Testing


Petrobras homologation cold test

Temperature Testing