MK19/G250V System from Scubapro:
This is a special combination of 1st and 2nd stages that offer the best possible resistance to cold water diving. The MK19 with the dry ambient chamber and warming fins and the G250V will allow extreme exposure to cold water. This regulator combination will set new standards for cold water diving. Built for harsh environments.

MK19 First Stage:
Developed from the popular MK17, the MK19high performance, and versatile overbalanced diaphragm first stage with dry ambient chamber and swivel turret, built for harsh environments.

• Machined marine grade chrome plated brass body.
  Excellent resistance to corrosion, long lasting, and excellent value for its price.
• Overbalanced Diaphragm design
  Delivers air in a consistent manner, reguardless of tank pressure.
• Dry ambient chamber.
• Safety seat guide and low profile HP orifice.
• Thermal Insulating System (TIS) and heat transfer fins 
  Patented anti-freeze system.
  Cold water resistant. Exceeds CE cold water diving requirements.
• 5 High flow low pressure swivel ports.
  Ergonomic distribution of the hoses for less jaw fatigue and full option for octopus and accessories.
• Dual high pressure ports.
  Console or pressure gauge can be mounted either right or left hand. \r\n
• Available in 232 bar yoke or DIN system.
  Versatile use depending on geographical region.

SG250V Second Stage:
Scubapro renowned G250 balanced adjustable 2nd stage is back and better than ever, redesigned as a Vintage version with tons of technical improvements.

• G250V has improved the breathing performance by 50%
  Working inhalation & exhalation are easier and stress free. Comparing the G250HP which required 1,29 Joules/Ltr with the new G250V requiring 0,68 J/Ltr means you spend less energy to breathe the same volume of air.
• Air balanced linear flow valve
  Highest performance in any condition.
  Increases safety and relaxation on every dive, beacuse it initiates airflow effortlessly and instantly on demand, independent of the cylinder pressure in a controlled and natural manner
• G250V is a full metal system
  Composed of a full metal inlet tube, metal orifice, metal knob plus a metal hose connector/heat exchanger. Serious construction for serious divers plus high cold-water resistance.
• New self contained cover concept
  Reminiscent of the classic G250,  but much stronger for years of trouble-free diving.  Also easily dismountable even underwater, thanks to the new no-locking pin system. Keeps you in control, no matter what type of diving you enjoy.
• New VIVA knob- for easier Venturi Adjustment, even with thick gloves 
  VIVA in the MAX position is a powerful breathing support. In conditions of cold water, strong current or buddy breathing, VIVA should be reduced to avoid free flow.
• Compact design
  Light weight for comfort and travel.
• Exceeds CE cold water norm.
• Light weight orthodontically designed mouthpiece
  Comfortable and reduces jaw fatigue and gum irritation.
• Protected and Limited Lifetime Warranty
  G250V systems- like all of our regulator systems, are protected by individual serialization &  a Limited Lifetime Warranty