Jabsco 31911-0000 Flush Mount Stainless Steel Water Hose Deck Fitting, 1/2 in NPT to 3/4 in GHT

The Jabsco 31911-0000 is a flush mount water hose deck fitting with hose connector, built to give a washdown or garden-style hose a clean, quick-release connection point on deck. It provides the installation solution for connecting a hose coil and trigger nozzle above deck to a pump and hose line run below decks, so the hose can be stowed out of the way when not in use. The fitting is machined from 316 stainless steel for corrosion resistance in a marine environment, and it uses a positive bayonet lock design that allows the hose to be connected and disconnected under full system pressure, without needing to shut off the pump first. Two Viton O-rings seal the connection to prevent leaks at the deck penetration. On the hose side, the fitting steps down from 1/2 inch NPT to 3/4 inch garden hose thread (GHT) for use with standard US garden hose fittings, making it compatible with common washdown hose and reel setups. Installation is straightforward, requiring only a through-deck hole sized for the 1/2 inch NPT fitting. It is backed by a 1 year warranty.

Specifications

• Brand: Jabsco
• Manufacturer Part Number: 31911-0000
• Material: 316 Stainless Steel
• Connector Type: Quick-Release Bayonet Coupling
• Thread Size: 1/2 inch NPT
• Thread Type: NPT
• Hose Thread: 3/4 inch Garden Hose Thread (GHT)
• O-Ring Seal: Double Viton O-Rings
• Exterior Finish: Stainless Steel
• Item Dimensions: 9 x 7 x 4 inches
• Weight: 1.1 pounds
• Number of Pieces: 5
• Warranty: 1 Year

Fitment

• 1/2 inch NPT connection on the deck side, stepping down to 3/4 inch garden hose thread (GHT) for US use
• Compatible with Jabsco hose coils and trigger nozzles that use the matching bayonet connector

Frequently Asked Questions

What is the Jabsco 31911-0000 used for? It is a flush mount deck fitting that lets you connect a washdown or garden-style hose to a pump line installed below decks, so the hose coil and trigger nozzle can be stowed out of the way when not in use.

Can the hose be disconnected while the system is pressurized? Yes, the 31911-0000 uses a positive bayonet lock connector that allows connection and disconnection under full pressure, so there is no need to depressurize the line first.

What material is the Jabsco 31911-0000 made from? The mount is machined from 316 stainless steel, chosen for its corrosion resistance in saltwater and marine environments.

What thread size does this deck fitting use? The deck side uses a 1/2 inch NPT connection, which steps down to 3/4 inch garden hose thread (GHT) for standard US garden hose fittings.

Does the 31911-0000 include a sealing system to prevent leaks? Yes, the fitting is sealed with double Viton O-rings at the connection point to prevent water intrusion at the deck penetration.

How is the Jabsco 31911-0000 installed? It installs through a deck-mounted hole sized for its 1/2 inch NPT threads, connecting to a hose line run below decks; no special tools are required beyond a standard through-hull style installation.

Does this fitting come with a warranty? The Jabsco 31911-0000 flush mount deck fitting carries a 1 year warranty.

What are the dimensions and weight of the 31911-0000? The Jabsco 31911-0000 measures 9 x 7 x 4 inches and weighs 1.1 pounds.

Is the Jabsco 31911-0000 compatible with any garden hose? The 3/4 inch GHT connection is designed for standard US garden hose thread, so it will mate with typical washdown hoses and reels using that same thread standard.

Will the fitting corrode from saltwater exposure? No, the 316 stainless steel construction of the 31911-0000 is specifically chosen to resist corrosion from saltwater and marine exposure.