Bad news, the arm on the part is 12 cm long and hits a pipe that is at a 90 degree bend above the ball valve. I had 9 cm clearance, so very close. My 2 choices are:
1) return for refund and look for a new unit
2)chop the arm to size
I'm nervous that a chop job will void warranty and in the event it fails ever, cancel any insurance payout. Typically modifying items is a bad idea when it comes to safety/insurance.
Back to shopping. I'm heavily invested in this, its a project I have to finish now. You know when you reach that point on small stuff that you should quit, but you forge on? That's me now. On the plus side, found some stuff from china that may work and I'm learning about aliexpress vs. amazon. Better selection and prices, I've never used ali before so I'm unsure about customer service.