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

Family Owned and Operated

Collection: Marine Plumbing & Ventilation - Fittings

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Perko (46 products)
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1st Class Eligible (133 products)
Boat Outfitting (2 products)
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Clearance (7 products)
Marine Hardware (17 products)
Marine Hardware | Deck Fills (15 products)
Marine Hardware | Vents (2 products)
Marine Plumbing & Ventilation (280 products)
Marine Plumbing & Ventilation | Accessories (3 products)
Marine Plumbing & Ventilation | Fittings (280 products)
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280 products

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

Sale

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

Vendor:
Perko

Regular price $32.99 USD

Regular price ~~$45.64 USD~~ Sale price $32.99 USD
Unit price per

Sale
Perko 6" Round Bronze Strainer MADE IN THE USA [0086006PLB]

Sale

Perko 6" Round Bronze Strainer MADE IN THE USA [0086006PLB]

Vendor:
Perko

Regular price $52.99 USD

Regular price ~~$97.24 USD~~ Sale price $52.99 USD
Unit price per

Sale
Perko 0582 Style Replacement Cap w/Inserts [0582DPS99A]

Sale

Perko 0582 Style Replacement Cap w/Inserts [0582DPS99A]

Vendor:
Perko

Regular price $54.99 USD

Regular price ~~$74.45 USD~~ Sale price $54.99 USD
Unit price per

Sale
Perko Replacement Drain Plug f/0124000PLB [012400099B]

Sale

Perko Replacement Drain Plug f/0124000PLB [012400099B]

Vendor:
Perko

Regular price $53.99 USD

Regular price ~~$68.13 USD~~ Sale price $53.99 USD
Unit price per

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

Sale

Perko Diesel Fill w/ Locking Cap f/ 1-1/2" Hose [0599DPDCHR]

Vendor:
Perko

Regular price $73.99 USD

Regular price ~~$104.81 USD~~ Sale price $73.99 USD
Unit price per

Sale
Attwood Snap-Handle Brass Drain Plug - 1" Diameter [7524A7]

Attwood Snap-Handle Brass Drain Plug - 1" Diameter [7524A7]

Vendor:
Attwood Marine

Regular price $6.99 USD

Regular price ~~$0.00 USD~~ Sale price $6.99 USD
Unit price per
Dometic Bellows S/T Pump Kit [385230980]

Sale

Dometic Bellows S/T Pump Kit [385230980]

Vendor:
Dometic

Regular price $172.99 USD

Regular price ~~$173.99 USD~~ Sale price $172.99 USD
Unit price per

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

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

Vendor:
Dometic

Regular price $48.99 USD

Regular price Sale price $48.99 USD
Unit price per
GROCO Bronze Slotted Hull Scoop Strainer w/Access Door f/Up to 1-1/4" Thru Hull [ASC-1250]

Sale

GROCO Bronze Slotted Hull Scoop Strainer w/Access Door f/Up to 1-1/4" Thru Hull [ASC-1250]

Vendor:
GROCO

Regular price $143.99 USD

Regular price ~~$191.00 USD~~ Sale price $143.99 USD
Unit price per

Sale
GROCO 1-1/4" Safety Seacock w/1" Side Port [SBV-1250-P]

Sale

GROCO 1-1/4" Safety Seacock w/1" Side Port [SBV-1250-P]

Vendor:
GROCO

Regular price $566.99 USD

Regular price ~~$861.00 USD~~ Sale price $566.99 USD
Unit price per

Sale
Perko 1-1/4" Pipe to Hose Adapter Straight Bronze MADE IN THE USA [0076DP7PLB]

Sale

Perko 1-1/4" Pipe to Hose Adapter Straight Bronze MADE IN THE USA [0076DP7PLB]

Vendor:
Perko

Regular price $25.99 USD

Regular price ~~$36.10 USD~~ Sale price $25.99 USD
Unit price per

Sale
GROCO Bronze Round Hull Strainer w/Access Door f/Up To 2" Thru-Hull [RSC-2000]

Sale

GROCO Bronze Round Hull Strainer w/Access Door f/Up To 2" Thru-Hull [RSC-2000]

Vendor:
GROCO

Regular price $96.99 USD

Regular price ~~$129.00 USD~~ Sale price $96.99 USD
Unit price per

Sale
GROCO 1" NPT x 1-1/8" Bronze Full Flow Pipe to Hose Straight Fitting [FF-1125]

Sale

GROCO 1" NPT x 1-1/8" Bronze Full Flow Pipe to Hose Straight Fitting [FF-1125]

Vendor:
GROCO

Regular price $13.99 USD

Regular price ~~$18.00 USD~~ Sale price $13.99 USD
Unit price per

Sale
GROCO 2" Safety Seacock w/1-1/2" Side Port [SBV-2000-P]

Sale

GROCO 2" Safety Seacock w/1-1/2" Side Port [SBV-2000-P]

Vendor:
GROCO

Regular price $729.99 USD

Regular price ~~$1,081.00 USD~~ Sale price $729.99 USD
Unit price per

Sale
GROCO Bronze Clam Shell Style Hull Strainer w/Mount Ring f/Up To 2-1/2" Thru Hull [SC-2500]

Sale

GROCO Bronze Clam Shell Style Hull Strainer w/Mount Ring f/Up To 2-1/2" Thru Hull [SC-2500]

Vendor:
GROCO

Regular price $123.99 USD

Regular price ~~$165.00 USD~~ Sale price $123.99 USD
Unit price per

Sale
GROCO 1" NPT x 1-1/4" Bronze Full Flow Pipe to Hose Straight Fitting [FF-1000]

Sale

GROCO 1" NPT x 1-1/4" Bronze Full Flow Pipe to Hose Straight Fitting [FF-1000]

Vendor:
GROCO

Regular price $13.99 USD

Regular price ~~$18.00 USD~~ Sale price $13.99 USD
Unit price per

Sale
T-H Marine Large Rectangular Scupper - White [LRS-2-DP]

Sale

T-H Marine Large Rectangular Scupper - White [LRS-2-DP]

Vendor:
T-H Marine Supplies

Regular price $14.99 USD

Regular price ~~$17.35 USD~~ Sale price $14.99 USD
Unit price per

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

Sale

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

Vendor:
Shurflo by Pentair

Regular price $57.99 USD

Regular price ~~$67.38 USD~~ Sale price $57.99 USD
Unit price per

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

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

Vendor:
Dometic

Regular price $28.99 USD

Regular price Sale price $28.99 USD
Unit price per
Beckson Pontoon 15" Pump - Hose Solid Separately [315FPX]

Sale

Beckson Pontoon 15" Pump - Hose Solid Separately [315FPX]

Vendor:
Beckson Marine

Regular price $50.99 USD

Regular price ~~$65.20 USD~~ Sale price $50.99 USD
Unit price per

Sale
Albin Group Solenoid Valve - 12V [07-66-035]

Sale

Albin Group Solenoid Valve - 12V [07-66-035]

Vendor:
Albin Group

Regular price $30.99 USD

Regular price ~~$38.91 USD~~ Sale price $30.99 USD
Unit price per

Sale
Viega MegaPress 316 FKM FPT Adapter - 1" x 1" (FPT) [91250]

Sale

Viega MegaPress 316 FKM FPT Adapter - 1" x 1" (FPT) [91250]

Vendor:
Viega

Regular price $162.99 USD

Regular price ~~$210.37 USD~~ Sale price $162.99 USD
Unit price per

Sale
Viega MegaPress 316 FKM 1" Coupling w/Stop [91110]

Sale

Viega MegaPress 316 FKM 1" Coupling w/Stop [91110]

Vendor:
Viega

Regular price $97.99 USD

Regular price ~~$126.65 USD~~ Sale price $97.99 USD
Unit price per

Sale
Perko Cover Bolt Complete Sizes 4 5 [0493DP599L]

Sale

Perko Cover Bolt Complete Sizes 4 5 [0493DP599L]

Vendor:
Perko

Regular price $27.99 USD

Regular price ~~$39.41 USD~~ Sale price $27.99 USD
Unit price per

Sale

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