6 In
Cash Acme 3/4 in Bronze NCLX Temperature Pressure Relief Valve 1-1/4 in Shank
What stands out about the B12336302 is how compact it is for tight spaces.
Campbell FLOMATIC 4032E Enviro 1-1/4 in. 80E Female Bronze Check Valve No Lead
You will notice the double ended layout works well for both left and right handed users.