Tri Clamp NPT Adapter | MNPT 1/4 inch x 1.5 TC - Stainless Steel
Boeray 1/4 Inch NPT Male Thread to 1/8 Inch NPT Female Thread Brass Pipe Fitting, Reducing Hex Head Hose Bushing Adapter Convert Pack of 2 - - Amazon.com
1" NPT Male Pipe x 1" NST (NH) Male Hose Adapter – FireHoseSupply.com
Viega 79245 ProPress Zero Lead Bronze Adapter with Male 1-Inch by 1-Inch P x Male NPT - Pipe Fittings - Amazon.com
Metric 50 to 1-1/2" NPT Adapter - RAM-50M150F | ElecDirect