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:Viega
Viega MegaPress 316 FKM 1/2" 45 Degree Street Elbow [91785]
- $102.99
$149.80- $102.99
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MegaPress 316 FKM 1/2" 45 Degree Street ElbowFeatures: For use with Sch. 5 to Sch. 40 stainless steel pipe 316 stainless steel Press connection, street Components:FKM sealing element, grip ring, separator ring Specifications: Construction: Stainless Steel Box Dimensions: 1"H x 1"W x 3"L WT:...- $102.99
$149.80- $102.99
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Vendor:Viega
Viega MegaPress 316 FKM 1" Slip Coupling w/o Stop [91300]
- $104.99
$151.97- $104.99
- Unit price
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MegaPress 316 FKM 1" Slip Coupling without StopFeatures: For use with Sch. 5 to Sch. 40 stainless steel pipe 316 stainless steel Press connection Components:FKM sealing elements, grip rings, separator rings Specifications: Construction: Stainless Steel Box Dimensions: 2"H x 2"W x 4"L WT: 0.5...- $104.99
$151.97- $104.99
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Vendor:Viega
Viega MegaPress 316 FKM MPT Adapter - 3/4" x 1/2" (MPT) [91210]
- $93.99
$136.98- $93.99
- Unit price
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MegaPress 316 FKM MPT Adapter - 3/4" x 1/2" (MPT)Features: For use with Sch. 5 to Sch. 40 stainless steel pipe 316 stainless steel Press connection, male pipe thread Components:FKM sealing element, grip ring, separator ring Specifications: Construction: Stainless Steel Box Dimensions: 1"H x...- $93.99
$136.98- $93.99
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Vendor:Viega
Viega MegaPress 316 FKM Tee - 3/4" x 3/4" x 3/4" [91605]
- $256.99
$390.86- $256.99
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MegaPress 316 FKM Tee - 3/4" x 3/4" x 3/4"Features: For use with Sch. 5 to Sch. 40 stainless steel pipe 316 stainless steel Press connection Components:FKM sealing elements, grip rings, separator rings Specifications: Construction: Stainless Steel Box Dimensions: 1"H x 3"W x 5"L...- $256.99
$390.86- $256.99
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Vendor:Viega
Viega MegaPress 316 FKM Tee - 1-1/4" x 1-1/4" x 1-1/4" [91640]
- $331.99
$504.54- $331.99
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MegaPress 316 FKM Tee - 1-1/4" x 1-1/4" x 1-1/4"Features: For use with Sch. 5 to Sch. 40 stainless steel pipe 316 stainless steel Press connection Components:FKM sealing elements, grip rings, separator rings Specifications: Construction: Stainless Steel Box Dimensions: 2"H x 4"W x 7"L...- $331.99
$504.54- $331.99
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Vendor:Viega
Viega MegaPress 316 FKM 3/4" Slip Coupling w/o Stop [91295]
- $82.99
$119.70- $82.99
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MegaPress 316 FKM 3/4" Slip Coupling without StopFeatures: For use with Sch. 5 to Sch. 40 stainless steel pipe 316 stainless steel Press connection Components:FKM sealing elements, grip rings, separator rings Specifications: Construction: Stainless Steel Box Dimensions: 2"H x 2"W x 3"L WT: 0.3...- $82.99
$119.70- $82.99
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Vendor:Viega
Viega MegaPress 316 FKM 3/4" 90 Degree Street Elbow [91730]
- $124.99
$182.22- $124.99
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MegaPress 316 FKM 3/4" 90 Degree Street ElbowFeatures: For use with Sch. 5 to Sch. 40 stainless steel pipe 316 stainless steel Press connection, street Components:FKM sealing element, grip ring, separator ring Specifications: Construction: Stainless Steel Box Dimensions: 2"H x 2"W x 4"L WT:...- $124.99
$182.22- $124.99
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Vendor:Viega
Viega MegaPress 316 FKM 1-1/2" 45 Degree Elbow [91775]
- $262.99
$399.69- $262.99
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MegaPress 316 FKM 1-1/2" 45 Degree ElbowFeatures: For use with Sch. 5 to Sch. 40 stainless steel pipe 316 stainless steel Press connection Components:FKM sealing elements, grip rings, separator rings Specifications: Construction: Stainless Steel Box Dimensions: 3"H x 3"W x 6"L WT: 1.3 lbs...- $262.99
$399.69- $262.99
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Vendor:Viega
Viega MegaPress 316 FKM 1/2" 90 Degree Elbow [91695]
- $116.99
$170.53- $116.99
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MegaPress 316 FKM 1/2" 90 Degree ElbowFeatures: For use with Sch. 5 to Sch. 40 stainless steel pipe 316 stainless steel Press connection Components:FKM sealing elements, grip rings, separator rings Specifications: Construction: Stainless Steel Box Dimensions: 1"H x 1"W x 3"L WT: 3.5 lbs...- $116.99
$170.53- $116.99
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Vendor:Viega
Viega MegaPress 316 FKM Tee - 1/2" x 1/2" x 1/2" [91600]
- $229.99
$349.43- $229.99
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MegaPress 316 FKM Tee - 1/2" x 1/2" x 1/2"Features: For use with Sch. 5 to Sch. 40 stainless steel pipe 316 stainless steel Press connection Components:FKM sealing elements, grip rings, separator rings Specifications: Construction: Stainless Steel Box Dimensions: 1"H x 3"W x 4"L...- $229.99
$349.43- $229.99
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Vendor:GROCO
GROCO 1/2" NPT x 3/4" ID Bronze Full Flow 90 Elbow Pipe to Hose Fitting [FFC-500]
- $13.99
$21.00- $13.99
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1/2" NPT x 3/4" ID Bronze Full Flow 90° Elbow Pipe to Hose FittingFeatures: 90 degree Male NPT x Hose connection C83600 Bronze Sizes from 1/2" to 3" Full Flow UL Listed 647B Note- C83600 bronze fittings are not in compliance with NSF-61 and therefore...- $13.99
$21.00- $13.99
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Vendor:GROCO
GROCO 1-1/4" NPT x 1-1/8" ID Bronze 90 Degree Pipe to Hose Fitting Standard Flow Elbow [PTHC-1125]
- $25.99
$39.00- $25.99
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1-1/4" NPT x 1-1/8" ID Bronze 90 Degree Pipe to Hose Fitting Standard Flow ElbowFeatures: 90 degree 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...- $25.99
$39.00- $25.99
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Forespar Marelon Full-Flow Seacock 2" Mushroom Through-Hull [904048ABYC]
- $176.99
$269.95- $176.99
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Marelon Full-Flow Seacock & 2" Mushroom Through-HullThis integrated 2-part system comes complete with a Marelon® valve and properly matched mushroom head thru-hull with super strong “buttress” type threading. This new package is designed to eliminate valve and thru-hull thread style mismatches and associated cross-threading...- $176.99
$269.95- $176.99
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Vendor:GROCO
GROCO 1-1/2" NPT x 1-3/4" ID Bronze Full Flow 90 Elbow Pipe to Hose Fitting [FFC-1500]
- $59.99
$90.00- $59.99
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1-1/2" NPT x 1-3/4" ID Bronze Full Flow 90° Elbow Pipe to Hose FittingFeatures: 90 degree Male NPT x Hose connection C83600 Bronze Sizes from 1/2" to 3" Full Flow UL Listed 647B Note- C83600 bronze fittings are not in compliance with NSF-61 and therefore...- $59.99
$90.00- $59.99
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Vendor:Perko
Perko 0542 Vented Fill f/1-1/2" Hose - Angled Neck - Gas - Black [0542DPGBLK]
- $40.99
$55.11- $40.99
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0542 Vented Fill f/1-1/2" Hose - Angled Neck - Gas - Black Black Polymer Cap with Black Polymer Body Black Polymer Strap Integral Tank Vent with Flame Arrestor and Anti Surge Valve Technical Information For Hose Size: 1-1/2" For Vent Hose: 5/8" O.D. Flange:...- $40.99
$55.11- $40.99
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Vendor:GROCO
GROCO 1-1/2" NPT Bronze 45 Degree Pipe to 1-1/2" Hose [PTHD-1500]
- $35.99
$53.00- $35.99
- Unit price
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1-1/2" NPT Bronze 45 Degree Pipe to 1-1/2" Hose Features: 45 degree Male NPT x Hose connection C83600 Bronze Standard Flow UL Listed 647B Note- C83600 bronze fittings are not in compliance with NSF-61 and therefore are not intended for use in potable water systems....- $35.99
$53.00- $35.99
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Vendor:GROCO
GROCO Bronze Pipe Nipple - 1-1/2" NPT [PN-1500]
- $27.99
$42.00- $27.99
- Unit price
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Bronze Pipe Nipple - 1-1/2" NPT Features: Cast-in wrench flat simplifies installation and removal NPT x NPT Connection C83600 Bronze Full flow Note-C83600 bronze fittings are not in compliance with NSF-61 and therefore are not intended for use in potable water systems. Specifications:...- $27.99
$42.00- $27.99
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Vendor:Attwood Marine
Attwood Livewell/Bailer Drain Plug - 1/2" [7533A7]
- $9.99
$11.99- $9.99
- Unit price
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Livewell/Bailer Drain Plug - 1/2"A clockwise turn of the handle tightens the plug and the lever flips down to lock. This plug is ideal for livewell drains.Features: Cam-action neoprene plugs snap shut to form a stopper for livewells/baitwells Brass snaps and plates 1/2" inner...- $9.99
$11.99- $9.99
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Vendor:GROCO
GROCO 1-1/2" NPT x 1-3/4" Bronze Full Flow Pipe to Hose Straight Fitting [FF-1500]
- $28.99
$43.00- $28.99
- Unit price
- / per
1-1/2" NPT x 1-3/4" Bronze Full Flow Pipe to Hose Straight FittingFeatures: Full Flow Male NPT x Hose connection C83600 Bronze Sizes from 1/2" to 3" UL Listed 647B Note- C83600 bronze fittings are not in compliance with NSF-61 and therefore are not intended for...- $28.99
$43.00- $28.99
- Unit price
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Vendor:Rule
Rule Hose Adapter - 1-1/2" to 1-1/8" [67]
- $10.99
$12.99- $10.99
- Unit price
- / per
Hose Adapter - 1-1/2" to 1-1/8"Features: Straight Hose Adapter Adapts a 1-1/2" Pump Outlet to 1-1/8" Hose High Impact Plastic- $10.99
$12.99- $10.99
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