I used a pair of small long nose pliers.It does pull off, but it's not easy.Like i said - only try it if you're prepared for worst case scenario. Lambro doesn't come with vac breaker.People either add them in on the pressurestat line, or like i did;
Cheers. I wish I had thought of doing that with the vac breaker when I had it apart to put in the overpressure valve! The boiler mounting isn't that rigid when you start torquing big items...