Re: Low Level Deck - Triple Deck Beam to Concrete Pier Connector
1 - Do away with the triple 2x "beam" and go with a single cut member of the dimension you require. While a single beam may be slightly less strong, in the environment you are installing it, it will be far less prone to rot and issues than a sistered member.
2 - Simpson used to have a pedestal style post base, you may have to go to them directly, as today's big box suppliers wouldn't know what is useful to the consumer if it bit them on the ass. Another option would be to go to an actual lumber yard, contractor's supply, or similar professionals oriented supplier that you have available locally to you.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!