C4 OB38.1/39

This model is designed for professional use, for or special forces and for technical diving projects. It is also a perfect match for special forces, where speed and reliability is required and for diving centers, where security is fundamental.

Examples of use

The C4 is particularly solid and is based on a simple construction. Hence, it is very reliable and offers excellent performance for the use of oxygen, helium, argon and nitrogen (other gases on request).

Construction materials

Body: ergal, stainless steel 316, brass ot 58
Seals: fkm, ecopur, teflon, composit
Overcooled head and cylinder

Technical data

Pressure ratio: 39/1
Drive air: 5-10 bar
Piston stroke: 1 x 120 mm
Displacement: 1 x 38 cc
Max boost pressure: 340 bar
Min suction pressure: 5 bar
Min pumping speed: 15 cycles/minute
Max pumping speed: 110 cycles/minute


C4 Integration OB38.1/39

Weight: 13.6 kg
Dimensions: 45x23x14 cm

C4 Expedition OB38.2.1/39

Weight: 21 kg
Dimensions: 53x41x21 cm
  • adjustable pressure reducer, with hp pressure gauge and lp pressure gauge
  • 2x180cm hoses, made of double-braided stainless steel for added security
  • 1x din connections with valve opening, the drain knob and pressure gauge
  • 1x din connections with oxygen filter inside
  • the case itself is waterproof to protect the oxygen-clean equipment


  • digital gauge is also available

C4 Mil Case

Dimensions: 55x48x73 cm

This particular version allows filling six cylinders simultaneously, while the operator dows not need to be present, because this model offers an automatic shut-off at the desired pressure. It was designed for groups of CCR divers, for diving centers, Liveaboards and special forces.

  • the system is placed in a waterproof case with handles and wheels for easy transport
  • the booster is switched on and off automatically
  • it provides an adjustable switch-off pressure
  • the oxygen inlet pressure can be controlled
  • the final oxygen pressure can be checked
  • the air supply pressure can be adjusted
  • the decanting speed is adjustable
  • 3m stainless steel hose
  • the filling bar can be placed inside the case
  • a pressure reducing valve for air supply is included in the case and placed with long connecting hose (3m)
  • this model can be delivered with all types of connections for all types of tanks
  • for every output, there is a check valve

Weight: 18kg (without booster)

C4 Frame

Dimensions: 33x70x22 cm

With the impeccable design and sturdy, encloses all the safety devices and the necessary automation, which makes the model ideal for use in diving center and in the professional field.

  • all the devices and the booster are contained within a stainless steel frame and covered by 2mm stainless steel panels
  • inside we placed filter for oxygen, one-way valves, safety valve hp and lp to make it safe for the operators and for workplace
  • double hp inlet and outlet pressure gauge and air supply pressure gauge to always have a simple visual check
  • an adjustable racking and versatile system that allows us to balance the storage pressure with the cylinders to recharge whether they are large or small
  • a booster speed control system, which makes it versatile in turn with both small cylinders and large
  • an automatic shut-off system, with the possibility to adjust the maximum pressure, depending on the requirements