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Welcome to First Stop Marine, Your one stop shop for all of your boating needs and more!

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Collection: Marine Plumbing & Ventilation - Fittings

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Marine Hardware | Vents (2 products)
Marine Plumbing & Ventilation (278 products)
Marine Plumbing & Ventilation | Accessories (2 products)
Marine Plumbing & Ventilation | Fittings (278 products)
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278 products

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

Sale

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

Vendor:
Perko

Regular price $59.99 USD

Regular price ~~$84.58 USD~~ Sale price $59.99 USD
Unit price per

Sale
GROCO 1-1/4"" NPT x 1-1/4" ID Stainless Steel Pipe to Hose Straight Fitting [PTH-1250-S]

Sale

GROCO 1-1/4"" NPT x 1-1/4" ID Stainless Steel Pipe to Hose Straight Fitting [PTH-1250-S]

Vendor:
GROCO

Regular price $22.99 USD

Regular price ~~$30.00 USD~~ Sale price $22.99 USD
Unit price per

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

Sale

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

Vendor:
GROCO

Regular price $65.99 USD

Regular price ~~$87.00 USD~~ Sale price $65.99 USD
Unit price per

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

Sale

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

Vendor:
GROCO

Regular price $11.99 USD

Regular price ~~$15.00 USD~~ Sale price $11.99 USD
Unit price per

Sale
GROCO 2" NPT Bronze 45 Degree Pipe to 2" Hose [PTHD-2000]

Sale

GROCO 2" NPT Bronze 45 Degree Pipe to 2" Hose [PTHD-2000]

Vendor:
GROCO

Regular price $48.99 USD

Regular price ~~$64.00 USD~~ Sale price $48.99 USD
Unit price per

Sale
Perko 1" Pipe To Hose Adapter Straight Bronze MADE IN THE USA [0076DP6PLB]

Sale

Perko 1" Pipe To Hose Adapter Straight Bronze MADE IN THE USA [0076DP6PLB]

Vendor:
Perko

Regular price $16.99 USD

Regular price ~~$25.99 USD~~ Sale price $16.99 USD
Unit price per

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

Sale

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

Vendor:
Perko

Regular price $12.99 USD

Regular price ~~$16.94 USD~~ Sale price $12.99 USD
Unit price per

Sale
Perko Fuel System Locking Insert f/ 1-1/2" Vented Fills [0525DP0BLK]

Sale

Perko Fuel System Locking Insert f/ 1-1/2" Vented Fills [0525DP0BLK]

Vendor:
Perko

Regular price $41.99 USD

Regular price ~~$52.88 USD~~ Sale price $41.99 USD
Unit price per

Sale
GROCO Bronze Pipe Nipple - 1-1/4" NPT [PN-1250]

Sale

GROCO Bronze Pipe Nipple - 1-1/4" NPT [PN-1250]

Vendor:
GROCO

Regular price $25.99 USD

Regular price ~~$34.00 USD~~ Sale price $25.99 USD
Unit price per

Sale
Attwood Stainless Steel Garboard Drain Plug - 7/8" Diameter [7557-7]

Sale

Attwood Stainless Steel Garboard Drain Plug - 7/8" Diameter [7557-7]

Vendor:
Attwood Marine

Regular price $30.99 USD

Regular price ~~$37.99 USD~~ Sale price $30.99 USD
Unit price per

Sale
Perko Gas Fill w/ Locking Cap f/ 1-1/2" Hose [0599DPGCHR]

Sale

Perko Gas Fill w/ Locking Cap f/ 1-1/2" Hose [0599DPGCHR]

Vendor:
Perko

Regular price $77.99 USD

Regular price ~~$110.05 USD~~ Sale price $77.99 USD
Unit price per

Sale
GROCO 2" Bronze Tri-Flanged Ball Valve/Seacock [FBV-2000]

Sale

GROCO 2" Bronze Tri-Flanged Ball Valve/Seacock [FBV-2000]

Vendor:
GROCO

Regular price $232.99 USD

Regular price ~~$310.00 USD~~ Sale price $232.99 USD
Unit price per

Sale
Viega MegaPress 316 FKM 3/4" 90 Degree Elbow [91700]

Sale

Viega MegaPress 316 FKM 3/4" 90 Degree Elbow [91700]

Vendor:
Viega

Regular price $135.99 USD

Regular price ~~$175.60 USD~~ Sale price $135.99 USD
Unit price per

Sale
Viega MegaPress 316 FKM 1-1/2" 90 Degree Elbow [91715]

Sale

Viega MegaPress 316 FKM 1-1/2" 90 Degree Elbow [91715]

Vendor:
Viega

Regular price $274.99 USD

Regular price ~~$355.28 USD~~ Sale price $274.99 USD
Unit price per

Sale
Viega MegaPress 316 FKM Tee - 2" x 2" x 2" [91620]

Sale

Viega MegaPress 316 FKM Tee - 2" x 2" x 2" [91620]

Vendor:
Viega

Regular price $522.99 USD

Regular price ~~$676.78 USD~~ Sale price $522.99 USD
Unit price per

Sale
Viega ProPress 1/2" - 90 Copper Elbow - Double Press Connection - Smart Connect Technology [77317]

Sale

Viega ProPress 1/2" - 90 Copper Elbow - Double Press Connection - Smart Connect Technology [77317]

Vendor:
Viega

Regular price $4.99 USD

Regular price ~~$5.84 USD~~ Sale price $4.99 USD
Unit price per

Sale
Viega MegaPress 316 FKM 3/4" Cap [91820]

Sale

Viega MegaPress 316 FKM 3/4" Cap [91820]

Vendor:
Viega

Regular price $67.99 USD

Regular price ~~$87.16 USD~~ Sale price $67.99 USD
Unit price per

Sale
Viega MegaPress 316 FKM 2" Coupling w/Stop [91125]

Sale

Viega MegaPress 316 FKM 2" Coupling w/Stop [91125]

Vendor:
Viega

Regular price $141.99 USD

Regular price ~~$182.96 USD~~ Sale price $141.99 USD
Unit price per

Sale
Viega ProPress 1/2" Copper Coupling w/Stop - Double Press Connection - Smart Connect Technology [78047]

Sale

Viega ProPress 1/2" Copper Coupling w/Stop - Double Press Connection - Smart Connect Technology [78047]

Vendor:
Viega

Regular price $3.99 USD

Regular price ~~$5.26 USD~~ Sale price $3.99 USD
Unit price per

Sale
Beckson 4" x 14" Port Gasket [GK-414]

Sale

Beckson 4" x 14" Port Gasket [GK-414]

Vendor:
Beckson Marine

Regular price $12.99 USD

Regular price ~~$15.40 USD~~ Sale price $12.99 USD
Unit price per

Sale
Viega MegaPress 316 FKM 1-1/4" Union [91940]

Sale

Viega MegaPress 316 FKM 1-1/4" Union [91940]

Vendor:
Viega

Regular price $568.99 USD

Regular price ~~$737.35 USD~~ Sale price $568.99 USD
Unit price per

Sale
TH-Marine Push-In Drain Plug f/1-1/8" Thru-Hull All Purpose Drains [PP-118-DP]

Sale

TH-Marine Push-In Drain Plug f/1-1/8" Thru-Hull All Purpose Drains [PP-118-DP]

Vendor:
T-H Marine Supplies

Regular price $7.99 USD

Regular price ~~$10.62 USD~~ Sale price $7.99 USD
Unit price per

Sale
Viega MegaPress 316 FKM 1" Cap [91825]

Sale

Viega MegaPress 316 FKM 1" Cap [91825]

Vendor:
Viega

Regular price $88.99 USD

Regular price ~~$114.25 USD~~ Sale price $88.99 USD
Unit price per

Sale
GROCO 1-1/4" Hose Barb Stainless 45 Degree Deck Drain [SCUS-1245]

Sale

GROCO 1-1/4" Hose Barb Stainless 45 Degree Deck Drain [SCUS-1245]

Vendor:
GROCO

Regular price $112.99 USD

Regular price ~~$150.00 USD~~ Sale price $112.99 USD
Unit price per

Sale

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