S118506 is listed in DICSA's technical catalogue under Metric, BSP and BSPT Adaptors / Forging elbows / 45º Elbow BSP male-BSP swivel female forge.
Identify each connected end separately, including thread form and sealing interface; nominal thread size alone does not establish a compatible connection.
Source specifications: Material: Carbon steel; Port 1 thread: 3/8" BSP; Port 2 thread: 3/8" BSP.
Use the catalogue drawing and exact part reference to check connection geometry, hose or tube compatibility, and installation requirements.
