Page 10 - Marine_EN

EXPLOSION PROTECTION

CORROSION PROTECTION

Flammable gases, vapours and dust can form an explosive atmosphere when mixed with
oxygen. In order to ensure a high level of safety, appropriate protective regulations exist
for the various operating equipment to avoid the risk of explosion hazards. The solenoid
as an electrical actuation in the valve technology must therefore demonstrate a type of
protection that is in line with the explosion protection standard.
Valves that are exposed to continuous contact with salty water and atmospheres that
contain salt or to harsh weather conditions demand enhanced corrosion protection in
order to prolong their service life.

EXPLOSION PROTECTION CORROSION PROTECTION
Description K8: 500 - 1000 h salt spray test
• Electrical operating equipment for all explosion hazard • Zinc-nickel coating, or made of stainless materials.
zones
• Solutions for valves and systems K9: > 1000 h salt spray test
• Optionally enhanced corrosion protection up to stainless • Mainly made of stainless and acid-resistant steel AISI
steel executions 316L. The solenoids are zinc-nickel coated.

Functions K10: > 1000 h salt spray test
• Solenoid spool valves • All elements made of stainless materials (AISI 316L) or
• Solenoid poppet valves coated with stainless materials.
• Proportional spool valves
• Proportional pressure valves (relief and reducing) LOW TEMPERATURES
• Proportional flow valves (throttle and flow control) Z604: -40° C

• Electronics integrated into the valve for proportional • Adapted sealing, adjustment tolerances partly adapted
functions
Z591: -60° C
Features
• Type of protection flameproof enclosure (Ex d) for zone 1 • Special materials, special sealings, adjustment tolerances

and 2 enhanced
• Type of protection intrinsic safety (Ex i) for zone 0
• Certified solenoids for surface and mining areas

• Certificates for ATEX, IECEx, EAC, UL/CSA, Australia, MA

PAGE 8 | WANDFLUH MARINE | PROPERTIES | ENVIRONMENT