You are using a web browser we don't support. Please use the latest version of one of these browsers.

Chrome

80+
Firefox

74+
Edge

80+
Safari

13.1+
Home Boat Plumbing Fixtures & Supplies Modular Plumbing

Modular Plumbing

106 results

If you’re considering replacing the water system on your boat, you may want to consider using a modular plumbing system like Sea Tech fittings, or the Pipework System from Whale Water Systems. Both plumbing systems offer a variety of high quality fittings for quick installation along with the added benefit of reusable components. To install, cut the tubing to the length and insert it into the fitting for an instant watertight connection. Didn’t get quite the right fit? Simply remove the fitting by pushing in the collet and pull the tubing out. It just doesn’t get any easier. Shop for all your modular plumbing needs at Fisheries Supply today!

CategoryBoat Plumbing Fixtures & Supplies
CategoryModular Plumbing
Show In-Stock Only
Sort & Filter
Show In-Stock Only
Product Type
Brand
Connection Type
Gender
Material
Series
Shape
Size
Type
View 13 More
ADAPTOR - FEMALE 1/2INBSP TO 15MM

Whale

Quick Connect Fittings - Adapter - 15mm Tubing x 1/2" BSP Female

SKU: 93904 | Item ID: WHA WX1532B

In Stock
SeaTech Waterpex Tubing - Blue

SeaTech

15 mm Quick Connect Tubing

Available in 4 options

In Stock
Quick Connect 15mm Plumbing System Tubing

Whale

15 mm Quick Connect Tubing

Available in 3 options

In Stock
1/2IN CTS X 3/4 NPS FEM SWIV ELBOW

SeaTech

3520 Female Swivel Elbows

Available in 3 options

In Stock
EQUAL TEE - 15MM

Whale

Quick Connect Fittings - Equal Tee - 15 mm

SKU: 93870 | Item ID: WHA WX1502B

In Stock
ADAPTOR MALE 1/2IN NPT BRASS TO 15MM

Whale

Quick Connect Fittings - Adapter - 15mm Tubing x 1/2" NPT Male (Brass)

SKU: 93877 | Item ID: WHA WX1513B

In Stock
FEMALE GARDEN HOSE ADAPTER15MM

Whale

Quick Connect Fittings - Adapter,GH- 15mm Tubingx3/4" Fem. Garden Hose Thrd (Green)

SKU: 137722 | Item ID: WHA WX1552B

In Stock
EQUAL STRAIGHT 15MM

Whale

Quick Connect Fittings - Equal Straight Connector - 15 mm

SKU: 93873 | Item ID: WHA WX1504B

In Stock
ADAPTOR MALE 1/2IN BSP TO 15MM

Whale

Quick Connect Fittings - Adapter - 15mm Tubing x 1/2" BSP Male

SKU: 93878 | Item ID: WHA WX1514B

In Stock
SWIVEL 90 DEGREE ELBOW, 1/2 NPT

Whale

Quick Connect Fittings - Elbow Adapter - 15mm Tubing x 1/2" BSP Female

SKU: 93903 | Item ID: WHA WX1531B

In Stock
SHUT-OFF VALVE - 15MM BRASS BODY

Whale

Quick Connect Fittings - Brass Shut-Off Valve

SKU: 149075 | Item ID: WHA WX1573B

In Stock
TAP TAIL ADAPTOR MALE 1/2IN BSP 15MM

Whale

Quick Connect Fittings - Tap Tail Adapter - 15mm Tubing x 1/2" BSP Male

SKU: 93879 | Item ID: WHA WX1515

In Stock
wx1583 of Whale 15mm Quick Connect Adaptor

Whale

15mm Quick Connect Adaptor, 3/8" Male

SKU: 1008498 | Item ID: WHA WX1583

In Stock
15mm Metric Series Quick Connect Plumbing System

SeaTech

15mm Metric Series Quick Connect Plumbing System Parts

Available in 2 options

In Stock
1/2IN CTS UNION CONNECTOR

SeaTech

35 Series Quick Connect Plumbing System - Unions for 5/8" OD Tubing

Available in 3 options

In Stock
Quick Connect Flexible Heater Connector

Whale

Quick Connect Flexible Heater Connector

SKU: 93882 | Item ID: WHA WX1519B

In Stock
STACKABLE(STEM)TEE

Whale

Quick Connect Fittings - Stem Tee - 15mm Tubing x 15mm Tubing x 15mm Stem

SKU: 93883 | Item ID: WHA WX1521

In Stock
35 Series Quick Connect Plumbing System - for 5/8" OD Tubing

SeaTech

35 Series Quick Connect Plumbing System - Stems for 5/8" OD Tubing

Available in 3 options

In Stock
15MM SHUT OFF VALVE, BLACK

SeaTech

15mm Metric Series Quick Connect Plumbing System - Valves

SKU: 156598 | Item ID: S/T 2439-1515

In Stock
1/2IN CTS MALE THREAD TEE

SeaTech

SeaTech 3530-1008 - 1/2in cts male thread tee

SKU: 189658 | Item ID: S/T 3530-1008

In Stock
1/2" CTS 3-WAY VALVE

SeaTech

35 Series Quick Connect Plumbing System - Valves for 1/2" OD Tubing

Available in 2 options

In Stock
SeaTech Waterpex Tubing - Blue

SeaTech

Quick Connect Tubing

Available in 4 options

In Stock
1/2 IN STACKABLE VALVE

SeaTech

SeaTech 3543-10 - 1/2 in stackable valve

SKU: 207931 | Item ID: S/T 3543-10

In Stock
STEM NRV ADAPTOR MALE 1/2 NPT -15MM

Whale

Quick Connect Fittings - Adapt.-15mm Stem w/Non-Return Valv x 1/2" NPT Male(Brass)

SKU: 93906 | Item ID: WHA WX1534

In Stock
15MM X 3/4IN FEMALE CONNECTOR

SeaTech

SeaTech 1607-1222 - Fem swivel 22mm-3/4bsp

SKU: 175394 | Item ID: S/T 1607-1222

In Stock
15MM PUMP UNION

SeaTech

SeaTech 2475-15 - 15mm pump union

SKU: 168916 | Item ID: S/T 2475-15

In Stock
15MM X 3/4IN FEMALE CONNECTOR

SeaTech

15mm Metric Series Quick Connect Plumbing System Adapters

Available in 4 options

In Stock
EQUAL ELBOW - 15MM

Whale

Quick Connect Fittings - Equal Elbow - 15 mm

SKU: 93872 | Item ID: WHA WX1503B

In Stock
15mm Metric Series Quick Connect Plumbing System

SeaTech

15mm Metric Series Quick Connect Plumbing System - Elbows

Available in 4 options

In Stock
TUBE-HOSE CONNECTOR 15MM TO 1/2IN

Whale

Quick Connect Fittings - Adapter, Hose - 15 mm Tubing x 1/2" Hose

SKU: 93911 | Item ID: WHA WX1544B

In Stock
ADAPTOR-FEMALE 3/4INBPS TO 15MM

Whale

Quick Connect Fittings - Female Adapter - 15mm Tubing x 3/4" BSP Female

SKU: 93910 | Item ID: WHA WX1542

In Stock
wx1584b of Whale Stem Adapter 1/2" Barbed

Whale

Stem Adapter 1/2" Barbed

SKU: 449802 | Item ID: WHA WX1584B

In Stock
ADAPTOR - BRASS FEM.1/2INBSP TO 15MM

Whale

Quick Connect Fittings - Adapter - 15mm Tubing x 1/2" BSP (Brass) Female

SKU: 93905 | Item ID: WHA WX1533

In Stock
CHECK VALVE - 15MM BRASS

Whale

15mm Quick Connect Fittings - Brass Stem Check Non-Return Valve

SKU: 93922 | Item ID: WHA WX1582B

In Stock
STEM ELBOW - 15MM

Whale

Quick Connect Fittings - Stem Elbow - 15 mm Tubing x 15mm Stem

SKU: 93884 | Item ID: WHA WX1522B

In Stock
15mm Metric Series Quick Connect Plumbing System

SeaTech

15mm Series Quick Connect Plumbing System Stem Adapters

Available in 8 options

In Stock
35 Series Quick Connect Plumbing System - for 5/8" OD Tubing

SeaTech

35 Series Connector

Available in 2 options

In Stock
wx7154 of Whale Quick Connect 15 mm Tubing Standard Semi-Rigid

Whale

Quick Connect 15 mm Tubing Standard Semi-Rigid

SKU: 1029575 | Item ID: WHA WX7154

In Stock
15mm Metric Series Quick Connect Plumbing System

SeaTech

15mm Metric Series Quick Connect Plumbing System Unions

Available in 3 options

In Stock
lv1218 of Whale Inline Check Valve

Whale

Inline Check Valve

SKU: 1004081 | Item ID: WHA LV1218

Out of Stock
1/2IN CTS HOSE BARB FITTING

SeaTech

SeaTech 3513-1008 - 1/2in cts hose barb fitting

SKU: 189659 | Item ID: S/T 3513-1008

In Stock
15mm Metric Series Quick Connect Plumbing System

SeaTech

22mm Metric Series Quick Connect Plumbing System - Unions

Available in 3 options

In Stock
45 Series Brass Quick Connect Plumbing System

SeaTech

45 Series Brass Quick Connect Plumbing System

Available in 22 options

In Stock
35 Series Quick Connect Plumbing System - for 5/8" OD Tubing

SeaTech

SeaTech 3501-1014 - 1/2in male connector

SKU: 390134 | Item ID: S/T 3501-1014

In Stock
15MM 3/4IN MALE CONNECTOR

SeaTech

SeaTech 2402-0815 - 15MM x 1/2 in. NPT - 15mm x 1/2 in. npt male connector

SKU: 156583 | Item ID: S/T 2402-0815

In Stock
ADAPTOR - FEMALE 1/2INBSP TO 15MM

Whale

Quick Connect Fittings - Adapter - 15mm Tubing x 1/2" BSP Female

SKU: 93904 | Item ID: WHA WX1532B

In Stock
SeaTech Waterpex Tubing - Blue

SeaTech

15 mm Quick Connect Tubing

Available in 4 options

In Stock
Quick Connect 15mm Plumbing System Tubing

Whale

15 mm Quick Connect Tubing

Available in 3 options

In Stock
1/2IN CTS X 3/4 NPS FEM SWIV ELBOW

SeaTech

3520 Female Swivel Elbows

Available in 3 options

In Stock
EQUAL TEE - 15MM

Whale

Quick Connect Fittings - Equal Tee - 15 mm

SKU: 93870 | Item ID: WHA WX1502B

In Stock
ADAPTOR MALE 1/2IN NPT BRASS TO 15MM

Whale

Quick Connect Fittings - Adapter - 15mm Tubing x 1/2" NPT Male (Brass)

SKU: 93877 | Item ID: WHA WX1513B

In Stock
FEMALE GARDEN HOSE ADAPTER15MM

Whale

Quick Connect Fittings - Adapter,GH- 15mm Tubingx3/4" Fem. Garden Hose Thrd (Green)

SKU: 137722 | Item ID: WHA WX1552B

In Stock
EQUAL STRAIGHT 15MM

Whale

Quick Connect Fittings - Equal Straight Connector - 15 mm

SKU: 93873 | Item ID: WHA WX1504B

In Stock
ADAPTOR MALE 1/2IN BSP TO 15MM

Whale

Quick Connect Fittings - Adapter - 15mm Tubing x 1/2" BSP Male

SKU: 93878 | Item ID: WHA WX1514B

In Stock
SWIVEL 90 DEGREE ELBOW, 1/2 NPT

Whale

Quick Connect Fittings - Elbow Adapter - 15mm Tubing x 1/2" BSP Female

SKU: 93903 | Item ID: WHA WX1531B

In Stock
SHUT-OFF VALVE - 15MM BRASS BODY

Whale

Quick Connect Fittings - Brass Shut-Off Valve

SKU: 149075 | Item ID: WHA WX1573B

In Stock
TAP TAIL ADAPTOR MALE 1/2IN BSP 15MM

Whale

Quick Connect Fittings - Tap Tail Adapter - 15mm Tubing x 1/2" BSP Male

SKU: 93879 | Item ID: WHA WX1515

In Stock
wx1583 of Whale 15mm Quick Connect Adaptor

Whale

15mm Quick Connect Adaptor, 3/8" Male

SKU: 1008498 | Item ID: WHA WX1583

In Stock
15mm Metric Series Quick Connect Plumbing System

SeaTech

15mm Metric Series Quick Connect Plumbing System Parts

Available in 2 options

In Stock
1/2IN CTS UNION CONNECTOR

SeaTech

35 Series Quick Connect Plumbing System - Unions for 5/8" OD Tubing

Available in 3 options

In Stock
Quick Connect Flexible Heater Connector

Whale

Quick Connect Flexible Heater Connector

SKU: 93882 | Item ID: WHA WX1519B

In Stock
STACKABLE(STEM)TEE

Whale

Quick Connect Fittings - Stem Tee - 15mm Tubing x 15mm Tubing x 15mm Stem

SKU: 93883 | Item ID: WHA WX1521

In Stock
35 Series Quick Connect Plumbing System - for 5/8" OD Tubing

SeaTech

35 Series Quick Connect Plumbing System - Stems for 5/8" OD Tubing

Available in 3 options

In Stock
15MM SHUT OFF VALVE, BLACK

SeaTech

15mm Metric Series Quick Connect Plumbing System - Valves

SKU: 156598 | Item ID: S/T 2439-1515

In Stock
1/2IN CTS MALE THREAD TEE

SeaTech

SeaTech 3530-1008 - 1/2in cts male thread tee

SKU: 189658 | Item ID: S/T 3530-1008

In Stock
1/2" CTS 3-WAY VALVE

SeaTech

35 Series Quick Connect Plumbing System - Valves for 1/2" OD Tubing

Available in 2 options

In Stock
SeaTech Waterpex Tubing - Blue

SeaTech

Quick Connect Tubing

Available in 4 options

In Stock
1/2 IN STACKABLE VALVE

SeaTech

SeaTech 3543-10 - 1/2 in stackable valve

SKU: 207931 | Item ID: S/T 3543-10

In Stock
STEM NRV ADAPTOR MALE 1/2 NPT -15MM

Whale

Quick Connect Fittings - Adapt.-15mm Stem w/Non-Return Valv x 1/2" NPT Male(Brass)

SKU: 93906 | Item ID: WHA WX1534

In Stock
15MM X 3/4IN FEMALE CONNECTOR

SeaTech

SeaTech 1607-1222 - Fem swivel 22mm-3/4bsp

SKU: 175394 | Item ID: S/T 1607-1222

In Stock
15MM PUMP UNION

SeaTech

SeaTech 2475-15 - 15mm pump union

SKU: 168916 | Item ID: S/T 2475-15

In Stock
15MM X 3/4IN FEMALE CONNECTOR

SeaTech

15mm Metric Series Quick Connect Plumbing System Adapters

Available in 4 options

In Stock
EQUAL ELBOW - 15MM

Whale

Quick Connect Fittings - Equal Elbow - 15 mm

SKU: 93872 | Item ID: WHA WX1503B

In Stock
15mm Metric Series Quick Connect Plumbing System

SeaTech

15mm Metric Series Quick Connect Plumbing System - Elbows

Available in 4 options

In Stock
TUBE-HOSE CONNECTOR 15MM TO 1/2IN

Whale

Quick Connect Fittings - Adapter, Hose - 15 mm Tubing x 1/2" Hose

SKU: 93911 | Item ID: WHA WX1544B

In Stock
ADAPTOR-FEMALE 3/4INBPS TO 15MM

Whale

Quick Connect Fittings - Female Adapter - 15mm Tubing x 3/4" BSP Female

SKU: 93910 | Item ID: WHA WX1542

In Stock
wx1584b of Whale Stem Adapter 1/2" Barbed

Whale

Stem Adapter 1/2" Barbed

SKU: 449802 | Item ID: WHA WX1584B

In Stock
ADAPTOR - BRASS FEM.1/2INBSP TO 15MM

Whale

Quick Connect Fittings - Adapter - 15mm Tubing x 1/2" BSP (Brass) Female

SKU: 93905 | Item ID: WHA WX1533

In Stock
CHECK VALVE - 15MM BRASS

Whale

15mm Quick Connect Fittings - Brass Stem Check Non-Return Valve

SKU: 93922 | Item ID: WHA WX1582B

In Stock
STEM ELBOW - 15MM

Whale

Quick Connect Fittings - Stem Elbow - 15 mm Tubing x 15mm Stem

SKU: 93884 | Item ID: WHA WX1522B

In Stock
15mm Metric Series Quick Connect Plumbing System

SeaTech

15mm Series Quick Connect Plumbing System Stem Adapters

Available in 8 options

In Stock
35 Series Quick Connect Plumbing System - for 5/8" OD Tubing

SeaTech

35 Series Connector

Available in 2 options

In Stock
wx7154 of Whale Quick Connect 15 mm Tubing Standard Semi-Rigid

Whale

Quick Connect 15 mm Tubing Standard Semi-Rigid

SKU: 1029575 | Item ID: WHA WX7154

In Stock
15mm Metric Series Quick Connect Plumbing System

SeaTech

15mm Metric Series Quick Connect Plumbing System Unions

Available in 3 options

In Stock
lv1218 of Whale Inline Check Valve

Whale

Inline Check Valve

SKU: 1004081 | Item ID: WHA LV1218

Out of Stock
1/2IN CTS HOSE BARB FITTING

SeaTech

SeaTech 3513-1008 - 1/2in cts hose barb fitting

SKU: 189659 | Item ID: S/T 3513-1008

In Stock
15mm Metric Series Quick Connect Plumbing System

SeaTech

22mm Metric Series Quick Connect Plumbing System - Unions

Available in 3 options

In Stock
45 Series Brass Quick Connect Plumbing System

SeaTech

45 Series Brass Quick Connect Plumbing System

Available in 22 options

In Stock
35 Series Quick Connect Plumbing System - for 5/8" OD Tubing

SeaTech

SeaTech 3501-1014 - 1/2in male connector

SKU: 390134 | Item ID: S/T 3501-1014

In Stock
15MM 3/4IN MALE CONNECTOR

SeaTech

SeaTech 2402-0815 - 15MM x 1/2 in. NPT - 15mm x 1/2 in. npt male connector

SKU: 156583 | Item ID: S/T 2402-0815

In Stock
1-45 results of 106