Bronze Threaded Nipple, 3/4" Pipe, Close Length from GROCO
Bronze plumbing fittings.

Acetal Thru-Transom Scupper from WEST MARINE
One-way rubber flapper valve and thru-hull fitting. For 1-1/2"ID hose. Overall length: 6-1/4". Installation hole size: 2". Max.

Adapter—3/4" BSP Female to 15mm (Qty. 2) from WHALE PUMPS
Just cut the tubing to length and fully push the end into the appropriate fitting. The collet automatically secures the hose. If you ever need to alter the system, the connections can be disassembled and reused. All components are manufactured from nontoxic, food-grade materials and are designed to allow unrestricted flow. To gain the advantages of the Whale system, it is not necessary to replumb your entire boat, as unique adapters enable connection to most boat’s existing plumbing systems.

3-Way Bronze Ball Valve, 1/2" Size (NPT) from APOLLO
Use in place of a "T" fitting to switch between two tanks.

3/4" NPT ARG Water Strainer with Plastic Strainer Basket from GROCO
The first line of defense to your engine’s cooling system. Well-made traditional bronze strainer head. No leaks under pressure or vacuum. Cast mounting brackets. Mounting system allows removal of the strainer without tools. Buna-N “O-ring” seal at strainer cap.

Small Bronze Ball Valves with Brass Ball, 3/8" NPT from APOLLO
Free-floating, chrome-plated brass ball. NPT threads. Stainlesssteel handle. Note: These are for inline, non-saltwater applications.