For certain applications AHP Merkle offers an optional corrosion-resistant design. A distinction is made here between chemical nickel-plating outside (corrosion-resistant) and inside (for water hydraulics). AHP Merkle makes the general distinction as follows: 

  • Order text BZW for water hydraulics (inside corrosion protection)
  • Additional text W1 for special corrosion protection outside

Example of an order text:

BZW 500.50/

BZ 500.50/ 


Most AHP cylinders can be supplied in a corrosion-resistant design through special treatment. In this case the seal elements are adapted to the specific application.