Just because your company only uses one type of port cap doesn’t mean you won’t be called to service a system with another manufacturer’s locking port cap.
Be Prepared! A Locking Cap Multi-Key can save you a ton of time and frustration. Trust me, if you don’t have the key, you won’t be very happy! More importantly, you don't want to be the tech who is trying to cut a locking cap off with a Sawzall or some other method. I have heard some odd and concerning methods to get access to those ports. I just want everyone to be prepared before they arrive onsite to a service call and to be as professional and efficient as possible.
Code Reference for Locking Access Port Caps
International Mechanical Code (IMC) 1101.10
Grab yourself a Multi-Key today at your local supply house or on amazon!- https://amzn.to/2GGAoVp