LTA3x2: Tightfill brass adaptor. 3" connection to 2" BSP threaded.
LTA3x3: Tightfill brass adaptor. 3" connection to 3" BSP threaded.
LTA3x4:Tightfill brass adaptor. 3" connection to 4" BSP threaded.
LTA4x3:Tightfill brass adaptor. 4" connection to 3" BSP threaded.
LTA4x4: Tightfill brass adaptor. 4" connection to 4" BSP threaded.