Dry Link 3” Coupler style 250 Stainless Steel 316, PTFE Seal, FNPT end connection (Part # W03025010D or DLC30N-1TA) 

Retails for $4,239

Dry Link 3” Adapter style 260 Stainless Steel 316, PTFE Seal, FNPT end connection (Part # W03026010D or DLA30N-1TA)

Retails for $2,412

Price includes shipping within Continental USA with insurance. 

We are also selling the coupler and adapter by themselves at these listings:

Coupler: https://www.ebay.com/itm/176163338877

Adapter: https://www.ebay.com/itm/176163333440