Lockable ventilation cover

Function and operational criteria of breather caps GN 775 see description of function. In addition, breather caps GN 775 are known for the following properties: a torque limiter is installed in the mechanism which is set to give the optimum torque to ensure a perfect seal on installation, once screwed in position, they can only be removed with a special key, with this vandalism proof function, the breather caps cannot be tampered with or removed by an unauthorised person. The connection between upper part (cap) and lower part (threaded part) conforms to protection class 65. Breather caps are supplied with two keys each.