Pres-Vac has been a maritime leader in terms of pressure vacuum valves for many years.

W&O and Pres-Vac joint forces to provide the marine market with these pressure vacuum valves, their spare parts, service and maintenance.

The complete range of Pres-Vac valves are multiple certified from explosion group IIA up until IIB (MESG 0,9 up until MESG 0,5).


  • Capacity : 400 – 12.000 Nm3/h
  • Pressure : 10 to 70 kPa
  • Vacuum : 1.5 to 7.0 kPa
  • No unwarranted emissions
  • DN50 to DN600
  • Optimal safety
  • Low noise
  • Low blow down
  • Simple operations and maintenance
  • Lower number of parts
  • Compliance with all current rules and regulations

CIS Services, specialized in marine valves, is at your disposal for any request you may have concerning this material.

Why you should choose CIS Services

• We are there when you need us.

• Office located in Le Havre and stock strategically located in Rotterdam.

• 25 years as a reputable partner.

• We represent top brands with the required certifications and registrations.

• Partnership with largest European distributors of pipe, valves, fittings, and automation.

• Valve Services – ship checks and Engineered Solutions troubleshooting.

• Delivering new technologies and monitoring regulations to better serve our customers.


 CIS Services

39 rue du Docteur Suriray – 76600 Le Havre – FRANCE

Tel : +33(0)2 35 24 03 03