Marine Plumbing & Ventilation - Fittings
Ensure secure and reliable plumbing connections with premium marine plumbing and ventilation fittings designed for dependable performance in demanding boating environments. Essential for freshwater, raw water, sanitation, fuel, and ventilation systems, quality fittings help maintain proper flow while reducing the risk of leaks and system failures. Built for freshwater and saltwater applications, our collection features durable fittings crafted from corrosion-resistant brass, stainless steel, reinforced composites, and other marine-grade materials engineered to withstand moisture, vibration, pressure, and harsh marine conditions. Browse hose barbs, elbows, tees, couplings, adapters, reducers, connectors, threaded fittings, bulkhead fittings, replacement components, and installation accessories for a variety of marine systems. Designed for secure installation and long-lasting reliability, these products support efficient plumbing and ventilation performance throughout your vessel. Featuring trusted marine brands recognized for quality and innovation, our Marine Plumbing & Ventilation – Fittings collection delivers dependable solutions for repairs, maintenance, and new installations. Shop today with confidence.
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Sort by:
- Featured
- Most relevant
- Best selling
- Alphabetically, A-Z
- Alphabetically, Z-A
- Price, low to high
- Price, high to low
- Date, old to new
- Date, new to old
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Vendor:Attwood Marine
Attwood T-Handle Brass Drain Plug - 1" Diameter [7526A7]
- $6.99
$7.99- $6.99
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T-Handle Brass Drain Plug - 1" DiameterThe T-Handle Drain Plugs are simply operated by a clockwise and counterclockwise turn of the T-handle, which expands and releases the drain plug.Features: Handle: Brass For 1" diameter drains *Sold as an Individual Specifications: Construction: Brass Box Dimensions:...- $6.99
$7.99- $6.99
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Vendor:GROCO
GROCO 1-1/4" NPT x 1-1/8" ID Bronze Pipe to Hose Straight Fitting [PTH-1125]
- $17.99
$27.00- $17.99
- Unit price
- / per
1-1/4" NPT x 1-1/8" ID Bronze Pipe to Hose Straight FittingFeatures: Male NPT x Hose connection C83600 Bronze Sizes from 1/2" to 5" Standard Flow UL Listed 647B Note- C83600 bronze fittings are not in compliance with NSF-61 and therefore are not intended for use...- $17.99
$27.00- $17.99
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Vendor:Attwood Marine
Attwood Garboard Drain Plug Cast Bronze [7555-3]
- $14.99
$16.99- $14.99
- Unit price
- / per
Garboard Drain Plug Cast BronzeAttwood's Bronze Garboard Drain Plug reliably provides bilge drainage when hauling out, and it seals securely when not draining. It has machined and tapered pipe threads to ensure a watertight plug fit, and the nut can be removed with a...- $14.99
$16.99- $14.99
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Vendor:Viega
Viega MegaPress 3/4" 90 Copper Nickel Elbow - Double Press Connection - Smart Connect Technology [88005]
- $15.99
$132.77- $15.99
- Unit price
- / per
MegaPress 3/4" 90° Copper Nickel Elbow - Double Press Connection - Smart Connect TechnologyFeatures: Size: 3/4" CuNiFe 90/10 Press connection Components: FKM sealing element- $15.99
$132.77- $15.99
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Vendor:Viega
Viega MegaPress 3/4" 45 Copper Nickel Elbow - Double Press Connection - Smart Connect Technology [88095]
- $15.99
$126.44- $15.99
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MegaPress 3/4" 45° Copper Nickel Elbow - Double Press Connection - Smart Connect TechnologyFeatures: Size: 3/4" CuNiFe 90/10 Press Connection Components:FKM sealing element- $15.99
$126.44- $15.99
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Vendor:Viega
Viega MegaPress 1" 90 Stainless Steel 304 Elbow Street - Press Connection - Smart Connect Technology [95040]
- $17.99
$160.00- $17.99
- Unit price
- / per
MegaPress 1" 90° Stainless Steel 304 Elbow Street - Press Connection - Smart Connect TechnologyFeatures: 304 stainless steel Press connection, street Components:FKM sealing element Specifications: Construction: Stainless Steel Box Dimensions: 2"H x 3"W x 6"L WT: 0.8 lbs UPC: 691514950402 Quick Guide (pdf)Brochure (pdf)- $17.99
$160.00- $17.99
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Vendor:GROCO
GROCO 3/4" Bronze Nipple Check Valve [PNC-750]
- $14.99
$22.00- $14.99
- Unit price
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3/4" Bronze Pipe Nipple Check ValveFeatures: C83600 cast bronze construction NPT threads 1/2" - 2" sizes Not suitable for use with diesel fuel or gasoline Maximum recommended temperature = 176-F (80-C) Specifications: Construction: Bronze Box Dimensions: 1"H x 2"W x 3"L WT: 0.19 lbs...- $14.99
$22.00- $14.99
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Vendor:GROCO
GROCO 3/8" NPT Bronze In-Line Ball Valve [IBV-375]
- $19.99
$30.00- $19.99
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3/8" NPT Bronze In-Line Ball ValveFeatures: Female NPT Threads 1-1/4" sizes and larger include a grease zerk fitting for lubrication (use only with the valve in the open position) or for draining Selectable handle rotation Handle has square hole to accept standard ratchet to...- $19.99
$30.00- $19.99
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Vendor:Perko
Perko Vented Flip Top Cap f/Fills with 1-1/2" Hose - Black [0795DP0BLK]
- $33.99
$45.64- $33.99
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Perko Vented Flip Top Cap f/Fills with 1-1/2" Hose Black Polymer Easily Mounts Directly on Gunnel with Removing Fill Body Includes Metallic Inserts for Gas, Diesel or Water Fills Integral Tank Vent with Flame Arrestor No Deck Plate Key or Ground Wire Required Flip...- $33.99
$45.64- $33.99
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Vendor:Attwood Marine
Attwood Cockpit Drain - No Screen [3875C1]
- $10.99
$12.99- $10.99
- Unit price
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Cockpit Drain - No ScreenFor use with 1-1/2" I.D. hose as part of a self-bailing cockpit system. Features short stem and narrow flange for installing through cockpits. Polypropylene construction.Specifications: Stem Length: 3-3/4" Max. Hull Thickness: 1-1/2" Flange Diameter: 2-1/8" Installation Hole Size: 1-7/8" WARNING:...- $10.99
$12.99- $10.99
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Vendor:Perko
Perko Flush Pro Valve Kit - 5/8" [0457DP4]
- $168.99
$276.69- $168.99
- Unit price
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Flush Pro Valve Kit - 5/8"Finally! Freshwater flushing of your inboard is as simple as connecting a garden hose.Features: Polymer Stainless Steel Spring Flush your boat engine safely and easily Transparent body allows for visual inspection of water flow Durable check valve system activated...- $168.99
$276.69- $168.99
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Vendor:Jabsco
Jabsco Flush Mount Hose Adapter [31911-0002]
- $47.99
$63.99- $47.99
- Unit price
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Flush Mount Hose AdapterPerfect solution to remove that unsightly hose bib deck fitting and rusty knob. This will enable you to connect your water hose in seconds.Enables you to quick-connect your water hose in seconds. Position this fitting close to your anchor windlass to...- $47.99
$63.99- $47.99
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![Viega MegaPress 1" 90 Stainless Steel 304 Elbow Street - Press Connection - Smart Connect Technology [95040]](http://www.dbmarinesupplies.com/cdn/shop/files/83847XL_533x.jpg?v=1682762962)