Marine Plumbing & Ventilation - Fittings

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We offer flat rate shipping and can help you locate hard to find items or we can recommend alternatives.

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GROCO 34 NPT x 1 Bronze Full Flow Pipe to Hose Straight Fitting FF750
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$15.00
$10.99

GROCO 3/4" NPT x 1" Bronze Full Flow Pipe to Hose Straight Fitting [FF-750]

GROCO

3/4" NPT x 1" Bronze Full Flow Pipe to Hose Straight FittingFeatures: Full Flow Male NPT x Hose connection C83600 Bronze Sizes from 1/2" to 3" UL ...

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$15.00
$10.99
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GROCO Backing Block f114  112 Seacocks BB2
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$90.00
$64.99

GROCO Backing Block f/1-1/4" 1-1/2" Seacocks [BB-2]

GROCO

Backing Block for 1-1/4" & 1-1/2" SeacocksFeatures: Each size fits multiple seacock sizes Press threaded brass inserts into the hull side of t...

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$90.00
$64.99
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Perko 0542 Vented Fill f112 Hose  Angled Neck  Gas  Black 0542DPGBLK
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$55.11
$43.99

Perko 0542 Vented Fill f/1-1/2" Hose - Angled Neck - Gas - Black [0542DPGBLK]

Perko

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 F...

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$55.11
$43.99
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Perko 0590 Vented Fill f112 Hose  Angled Neck  Chrome 0590DPGCHR
Save 21%
$131.53
$103.99

Perko 0590 Vented Fill f/1-1/2" Hose - Angled Neck - Chrome [0590DPGCHR]

Perko

0590 Vented Fill f/1-1/2" Hose - Angled Neck - ChromeChrome Plated Bronze Cap Black Polymer Body Stainless Steel Bead Chain Integral Tank Vent wit...

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$131.53
$103.99
Save 21%
Perko 0591 Vented Fill f112 Hose  Straight Neck  Chrome 0591DPGCHR
Save 29%
$131.53
$92.99

Perko 0591 Vented Fill f/1-1/2" Hose - Straight Neck - Chrome [0591DPGCHR]

Perko

0591 Vented Fill f/1-1/2" Hose - Straight Neck - ChromeChrome Plated Bronze Cap Black Polymer Body Straight Neck & Heavy Duty Stainless Steel ...

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$131.53
$92.99
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Perko Vented Flip Top Cap fFills with 112 Hose  Black 0795DP0BLK
Save 19%
$45.64
$36.99

Perko Vented Flip Top Cap f/Fills with 1-1/2" Hose - Black [0795DP0BLK]

Perko

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 Insert...

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$45.64
$36.99
Save 19%
Perko Vented Flip Top Cap fFills with 112 Hose  White 0795DP0WHT
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$45.64
$36.99

Perko Vented Flip Top Cap f/Fills with 1-1/2" Hose - White [0795DP0WHT]

Perko

Perko Vented Flip Top Cap f/Fills with 1-1/2" Hose White Polymer Easily Mounts Directly on Gunnel with Removing Fill Body Includes Metallic Insert...

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$45.64
$36.99
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Perko 0541Vented Fill f112 Hose  Straight Neck  Gas 0541DPGCHR
Save 29%
$84.58
$59.99

Perko 0541Vented Fill f/1-1/2" Hose - Straight Neck - Gas [0541DPGCHR]

Perko

0541 Vented Fill f/1-1/2" Hose - Straight Neck - Gas Straight Neck Chrome Plated Bronze Cap Black Polymer Body Stainless Steel Bead Chain Integral...

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$84.58
$59.99
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Dometic MSD Fitting fSmall Tank 970 Series 385320006
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$31.99
$30.99

Dometic MSD Fitting f/Small Tank 970 Series [385320006]

Dometic

MSD Fitting f/Small Tank 970 Series ToiletsReplaces MSD fittings for Series 974 MSD models.  Converts Series 972 and 974 - 2.6 gallon models to MS...

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$31.99
$30.99
Save 3%
Forespar Marelon FullFlow Seacock  12 Mushroom ThroughHull 904042ABYC
Save 26%
$115.95
$85.99

Forespar Marelon Full-Flow Seacock 1/2" Mushroom Through-Hull [904042ABYC]

Forespar Performance Products

Marelon Full-Flow Seacock & 1/2" Mushroom Through-HullThis integrated 2-part system comes complete with a Marelon® valve and properly matched ...

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$115.95
$85.99
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Forespar Marelon FullFlow Seacock  2 Mushroom ThroughHull 904048ABYC
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$269.95
$200.99

Forespar Marelon Full-Flow Seacock 2" Mushroom Through-Hull [904048ABYC]

Forespar Performance Products

Marelon Full-Flow Seacock & 2" Mushroom Through-HullThis integrated 2-part system comes complete with a Marelon® valve and properly matched mu...

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$269.95
$200.99
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Forespar Marelon FullFlow Seacock  1 Mushroom ThroughHull 904044ABYC
Save 26%
$154.95
$114.99

Forespar Marelon Full-Flow Seacock 1" Mushroom Through-Hull [904044ABYC]

Forespar Performance Products

Marelon Full-Flow Seacock & 1" Mushroom Through-HullThis integrated 2-part system comes complete with a Marelon® valve and properly matched mu...

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$154.95
$114.99
Save 26%
Attwood Scupper Valve 38763
Save 8%
$12.99
$11.99

Attwood Scupper Valve [3876-3]

Attwood Marine

Scupper ValveProvides a water exit for boats with self-bailing cockpits. Acetal construction. Accommodates 3875B thru-transom thru-hull connector ...

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$12.99
$11.99
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Attwood Cockpit Drain  No Screen 3875C1
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$12.99
$11.99

Attwood Cockpit Drain - No Screen [3875C1]

Attwood Marine

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 install...

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$12.99
$11.99
Save 8%
Dometic MSD Fitting fLarge Tank 970 Series Toilets 385320007
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$31.99
$30.99

Dometic MSD Fitting f/Large Tank 970 Series Toilets [385320007]

Dometic

MSD Fitting f/Large Tank 970 Series ToiletsReplaces MSD fittings for Series 975 MSD models.  Converts Series 975 and 976 - 5 gallon models to MSD ...

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$31.99
$30.99
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Dometic Duck Bill Valve Kit  112 385310076
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$54.99
$52.99

Dometic Duck Bill Valve Kit - 1-1/2" [385310076]

Dometic

Duck Bill Valve Kit - 1-1/2"The Dometic™ Duck Bill Valves Kit comes with two (2) 1 ½” duck bill valves for “T” and “S” series pumps.  These valves...

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$54.99
$52.99
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Shurflo by Pentair Pressure Reducing City Water Entry  InLine  Cream 18303908
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$74.25
$51.99

Shurflo by Pentair Pressure Reducing City Water Entry - In-Line - Cream [183-039-08]

Shurflo by Pentair

Pressure Reducing City Water Entry - In-Line - CreamThis combination pressure reducing city water entry and check valve diaphragm design prevents...

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$74.25
$51.99
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Shurflo by Pentair Pressure Reducing City Water Entry  Wall Mount  Gel White 18302918
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$73.51
$50.99

Shurflo by Pentair Pressure Reducing City Water Entry - Wall Mount - Gel White [183-029-18]

Shurflo by Pentair

Pressure Reducing City Water Entry - Wall Mount - Gel WhiteThis combination pressure reducing city water entry and check valve diaphragm design p...

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$73.51
$50.99
Save 31%
Perko Gas Fill f112 Hose  Chrome Plated Zinc Black Flange 1313DP0CHR
Save 28%
$35.93
$25.99

Perko Gas Fill f/1-1/2" Hose - Chrome Plated Zinc, Black Flange [1313DP0CHR]

Perko

Gas Fill f/1-1/2" Hose - Chrome Plated Zinc, Black FlangeFeatures: Chrome Plated Zinc Alloy Flange Black Polymer Flange Black Polymer Cap wit...

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$35.93
$25.99
Save 28%
Shurflo by Pentair Pressure Reducing City Water Entry  Wall Mount  Chrome 18302914
Save 30%
$91.73
$63.99

Shurflo by Pentair Pressure Reducing City Water Entry - Wall Mount - Chrome [183-029-14]

Shurflo by Pentair

Pressure Reducing City Water Entry - Wall Mount - ChromeThis combination pressure reducing city water entry and check valve diaphragm design prev...

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$91.73
$63.99
Save 30%
Perko Spare Cap f1313 Gas Fill 0126DP0BLK
Save 23%
$16.94
$12.99

Perko Spare Cap f/1313 Gas Fill [0126DP0BLK]

Perko

Spare Cap f/1313 Gas FillNon-Locking Spare Cap f/1313 Gas Fill

$16.94
$12.99
Save 23%
Perko Gas Tank Vent wSwivel Elbow  ChromeBlack 0561DP4CHR
Save 28%
$27.64
$19.99

Perko Gas Tank Vent w/Swivel Elbow - Chrome/Black [0561DP4CHR]

Perko

Gas Tank Vent w/Swivel Elbow - Chrome/BlackFeatures: Chrome Plated Zinc Alloy Cap with Zinc Alloy Elbow Black or White Polymer Splash Guards ...

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$27.64
$19.99
Save 28%
Perko 0540 Gas FillVent f112 Hose  Angled Neck 0540DPGCHR
Save 29%
$84.58
$59.99

Perko 0540 Gas Fill/Vent f/1-1/2" Hose - Angled Neck [0540DPGCHR]

Perko

0540 Gas Fill/Vent for 1-1/2" Hose - Angled NeckFeatures: Angled Neck Chrome Plated Bronze Cap Black Polymer Body Stainless Steel Bead Chain I...

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$84.58
$59.99
Save 29%
Perko Flush Pro Valve Kit  58 0457DP4
Save 35%
$276.69
$178.99

Perko Flush Pro Valve Kit - 5/8" [0457DP4]

Perko

Flush Pro Valve Kit - 5/8"Finally! Freshwater flushing of your inboard is as simple as connecting a garden hose.Features: Polymer Stainless Steel...

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$276.69
$178.99
Save 35%

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