GROCO 2-Inch NPT Stainless Straight Pipe-to-Hose Fitting

The GROCO PTH-2000-S pipe-to-hose fitting is designed to transition a threaded marine plumbing connection into a flexible hose run without adding a stack of adapters. The fitting uses a male NPT connection to hose, giving a straightforward interface between rigid threaded components and clamped hose. This version uses a standard-flow passage appropriate to the fitting family. Its straight geometry helps the installer route hose around machinery, tanks, or structural members while keeping the connection compact.

GROCO lists the fitting under UL 647B, and the connection is available within a broader size range so related runs can use consistent hardware. The one-piece geometry also avoids the extra threaded joints that would be required to build the same direction change from several separate fittings. The PTH-2000-S is made from 316 stainless steel for marine plumbing service. For this material configuration, the fitting is NSF-61 compliant for potable-water use, which is important when deciding where it belongs in a vessel's plumbing plan.

• Single-piece layout reduces the number of threaded joints
• UL 647B listed marine fitting
• Standard flow internal passage
• Straight pipe-to-hose transition

Dry-fit the PTH-2000-S before final assembly so the hose approaches the barb naturally and is not forced into a tight bend. Use thread sealant compatible with the connected system, and support the hose so its weight and vibration are not carried entirely by the threaded fitting. After the system is put back into service, inspect the threaded joint and hose clamps for seepage and recheck them during routine maintenance. For elbows, adapters, and other hose-transition components, browse Marine Pipe Fittings.