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Plumbing Supplies

At AquaCave, we offer some of the best selection and best prices on aquarium plumbing supplies including bulkheads, valves, PVC fittings, Loc-Line, hose barb fittings, John Guest, Jaco fittings, tubbing, strainers, and other plumbing accessories for your marine, reef, and freshwater aquarium.

360 of 503 Items
  • Replacement Rubber Washer for 1.5" Sch. 80 Bulkhead

    Pentair Aquatics

    Replacement Rubber Washer for 1.5" Sch. 80 Bulkhead

    Replacement Rubber Washer for 1.5" Sch. 80 BulkheadReplacement  Rubber Washer for 1.5" Sch. 80 BulkheadRubber seal that makes a water tight seal when used with the appropriately sized bulkhead fititng. The rubber washer goes on the 'wet' side of...

    $4.45
    Add to Cart
  • John Guest 1/4" x 1/4" Union Elbow- White

    John Guest (JG)

    John Guest 1/4" x 1/4" Union Elbow- White

    Color: WhiteJohn Guest Part# : CI0308WTube O.D.: 1/4"Tube O.D.: 1/4"Color: WhiteJohn Guest Part# : CI0308WTube O.D.: 1/4"Tube O.D.: 1/4"How to make a connection: * Cut tube square It is essential that the outside diameter be free of score marks...

    $3.99
    Add to Cart
  • 1.5" UNISEAL Flexible Bulkhead Tank Adapter 1.5" UNISEAL Flexible Bulkhead Tank Adapter

    AquaCave

    1.5" UNISEAL Flexible Bulkhead Tank Adapter

    1.5" UNISEAL Flexible Tank Adapter (bulkhead)1.5" UNISEAL Flexible Tank Adapter (bulkhead). Why use an expensive bulkhead when you can use a Uniseal®? Just drill a hole in the pipe, tank or bucket, insert a Uniseal®, then put some Windex® on...

    $3.99
    Add to Cart
  • 3/4" Flexible PVC Pipe, Sold Per Linear Foot 3/4" Flexible PVC Pipe, Sold Per Linear Foot

    AquaCave

    3/4" Flexible PVC Pipe, Sold Per Linear Foot

    3/4" Flexible PVC Pipe, Sold Per Linear Foot. For use with standard PVC fititngs.This flexible Schedule 40 PVC pipe permits compound curves, greatly reducing the number of fittings otherwise required. It also reduces friction loss caused by elbows...

    $3.99
    Add to Cart
  • Braided VInyl Tubing - 3/4" ID x 1" OD, per foot Braided VInyl Tubing - 3/4" ID x 1" OD, per foot

    AquaCave

    Braided VInyl Tubing - 3/4" ID x 1" OD, per foot

    Braided VInyl Tubing - 3/4" ID x 1" OD, per foot Clear PVC tubing reinforced with spiral polyester for use in pressure applications. Manufactured with non-toxic FDA compounds. Use for flexible lines for air, water, liquids, beverages, and gases, as well...

    $3.99
    Add to Cart
  • Garden Hose Female (GHFT) x 1/2" Barb Fitting Garden Hose Female (GHFT) x 1/2" Barb Fitting

    AquaCave

    Garden Hose Female (GHFT) x 1/2" Barb Fitting

    Garden Hose Female (GHFT) x 1/2" Barb Fitting These fittings are an excellent choice for tubing and hose applications involving garden hose threads. Non-corrosive Includes the Red Vinyl, phthalate-free washer May be hand or wrench tightened Dimensions:...

    $3.99
    Add to Cart
  • Hose Barb Elbow Fitting 0.75" Insert x 0.75" Insert

    AquaCave

    Hose Barb Elbow Fitting 0.75" Insert x 0.75" Insert

    Hose Barb Elbow Fitting 0.75" Insert x 0.75" InsertHose Barb Elbow Fitting 0.75" Insert x 0.75" InsertAll listed sizes fit coresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Product code: 4104Item No. PL-HBF-EL90-075

    $3.99
    Add to Cart
  • John Guest 1/4" x 7/16" UNS Thread Faucet Connector

    John Guest (JG)

    John Guest 1/4" x 7/16" UNS Thread Faucet Connector

    John Guest 1/4" x 7/16" UNS Thread Faucet Connector 1/4OD by 7/16-24 UNS faucet connector pushfit plastic fitting for the connection of plastic or copper tube. NSF 51 and NSF 61 listed. Designed, manufactured and assembled in the UK by John Guest...

    $3.99
    Add to Cart
  • Reducing Insert Coupling 0.75" Insert x 0.5" Insert

    AquaCave

    Reducing Insert Coupling 0.75" Insert x 0.5" Insert

    Reducing Insert Coupling 0.75" Insert x 0.5" InsertReducing Insert Coupling 0.75" Insert x 0.5" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Product code: 4069Item No. PL-HBF-ICR3

    $3.99
    Add to Cart
  • Reducing Insert Coupling 1/2" Insert x 3/8" Insert

    AquaCave

    Reducing Insert Coupling 1/2" Insert x 3/8" Insert

    Reducing Insert Coupling 1/2" Insert x 3/8" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Reducing Insert Coupling 1/2" Insert x 3/8" InsertAll listed "Insert" sizes fit corresponding Flexible...

    $3.99
    Add to Cart
  • Reducing Insert Coupling 5/8" Insert x 0.5" Insert

    AquaCave

    Reducing Insert Coupling 5/8" Insert x 0.5" Insert

    Reducing Insert Coupling 5/8" Insert x 0.5" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Reducing Insert Coupling 5/8" Insert x 0.5" InsertAll listed "Insert" sizes fit corresponding Flexible...

    $3.99
    Add to Cart
  • Reducing Insert Coupling, 1" Insert x 0.5" Insert

    AquaCave

    Reducing Insert Coupling, 1" Insert x 0.5" Insert

    Reducing Insert Coupling 1" Insert x 0.5" InsertReducing Insert Coupling 1" Insert x 0.5" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Product code: 4070Item No. PL-HBF-ICR4

    $3.99
    Add to Cart
  • Reducing Insert Coupling, 1" Insert x 0.75" Insert

    AquaCave

    Reducing Insert Coupling, 1" Insert x 0.75" Insert

    Reducing Insert Coupling 1" Insert x 0.75" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Reducing Insert Coupling 1" Insert x 0.75" InsertAll listed "Insert" sizes fit corresponding...

    $3.99
    Add to Cart
  • Reducing Insert Coupling, 1/2" Insert x 1/4" Insert

    AquaCave

    Reducing Insert Coupling, 1/2" Insert x 1/4" Insert

    Reducing Insert Coupling, 1/2" Insert x 1/4" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Reducing Insert Coupling, 1/2" Insert x 1/4" InsertAll listed "Insert" sizes fit corresponding...

    $3.99
    Add to Cart
  • Reducing Insert Coupling, 1/4" Insert x 3/16" Insert

    AquaCave

    Reducing Insert Coupling, 1/4" Insert x 3/16" Insert

    Reducing Insert Coupling, 1/4" Insert x 3/16" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Reducing Insert Coupling, 1/4" Insert x 3/16" InsertAll listed "Insert" sizes fit corresponding...

    $3.99
    Add to Cart
  • Reducing Insert Coupling, 3/8" Insert x 1/4" Insert

    AquaCave

    Reducing Insert Coupling, 3/8" Insert x 1/4" Insert

    Reducing Insert Coupling, 3/8" Insert x 1/4" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Reducing Insert Coupling, 3/8" Insert x 1/4" InsertAll listed "Insert" sizes fit corresponding...

    $3.99
    Add to Cart
  • Reducing Male Adapter 0.5" MPT x 0.25" Insert

    AquaCave

    Reducing Male Adapter 0.5" MPT x 0.25" Insert

    Reducing Male Adapter 0.5" MPT x 0.25" InsertReducing Male Adapter 0.5" MPT x 0.25" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Product code: 4073Item No. PL-HBF-RMA1

    $3.99
    Add to Cart
  • Reducing Male Adapter 0.5" MPT x 0.5" Insert

    AquaCave

    Reducing Male Adapter 0.5" MPT x 0.5" Insert

    Reducing Male Adapter 0.5" MPT x 0.5" InsertReducing Male Adapter  0.5" MPT x 0.5" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Product code: 4075Item No. PL-HBF-RMA3

    $3.99
    Add to Cart
  • Reducing Male Adapter 0.5" MPT x 0.75" Insert

    AquaCave

    Reducing Male Adapter 0.5" MPT x 0.75" Insert

    Reducing Male Adapter 0.5" MPT x 0.75" InsertReducing Male Adapter  0.5" MPT x 0.75" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Product code: 4077Item No. PL-HBF-RMA5

    $3.99
    Add to Cart
  • Reducing Male Adapter 0.5" MPT x 3/8" Insert

    AquaCave

    Reducing Male Adapter 0.5" MPT x 3/8" Insert

    Reducing Male Adapter 0.5" MPT x 3/8" InsertReducing Male Adapter 0.5" MPT x 3/8" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Product code: 4074Item No. PL-HBF-RMA2

    $3.99
    Add to Cart
  • Reducing Male Adapter 0.75" MPT x 0.5" Insert

    AquaCave

    Reducing Male Adapter 0.75" MPT x 0.5" Insert

    Reducing Male Adapter 0.75" MPT x 0.5" InsertReducing Male Adapter  0.75" MPT x 0.5" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Product code: 4079Item No. PL-HBF-RMA7

    $3.99
    Add to Cart
  • Reducing Male Adapter 0.75" MPT x 1" Insert

    AquaCave

    Reducing Male Adapter 0.75" MPT x 1" Insert

    Reducing Male Adapter 0.75" MPT x 1" InsertReducing Male Adapter  0.75" MPT x 1" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Product code: 4080Item No. PL-HBF-RMA8

    $3.99
    Add to Cart
  • Reducing Male Adapter 3/8" MPT x 0.5" Insert

    AquaCave

    Reducing Male Adapter 3/8" MPT x 0.5" Insert

    Reducing Male Adapter 3/8" MPT x 0.5" InsertReducing Male Adapter  3/8" MPT x 0.5" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Product code: 4076Item No. PL-HBF-RMA4

    $3.99
    Add to Cart
  • Replacement Rubber Washer for 1.5" Sch. 40 Bulkhead

    Pentair Aquatics

    Replacement Rubber Washer for 1.5" Sch. 40 Bulkhead

    Replacement Rubber Washer for 1.5" Sch. 40 BulkheadReplacement  Rubber Washer for 1.5" Sch. 40 BulkheadRubber seal that makes a water tight seal when used with the appropriately sized bulkhead fititng. The rubber washer goes on the 'wet' side of...

    $3.99
    Add to Cart
  • Replacement Rubber Washer for 2" Sch. 40 Bulkhead

    Pentair Aquatics

    Replacement Rubber Washer for 2" Sch. 40 Bulkhead

    Replacement  Rubber Washer for 2" Sch. 40 Bulkhead Rubber seal that makes a water-tight seal when used with the appropriately sized bulkhead fitting. The rubber washer goes on the 'wet' side of the tank or reservoir. Rubber seal that makes a water...

    $3.99
    Add to Cart
  • Y Hose Barb Connectors, 0.5" Insert

    AquaCave

    Y Hose Barb Connectors, 0.5" Insert

    Y Hose Barb Connectors, 0.5" InsertPlastic fitting. Translucent white color. Y Hose Barb Connectors, 0.5" InsertTranslucent white color. 3 sizes available.All listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit...

    $3.99
    Add to Cart
  • Cable Tie Mount with Zip-Tie, 5 ct. Cable Tie Mount with Zip-Tie, 5 ct.

    AquaCave

    Cable Tie Mount with Zip-Tie, 5 ct.

    Cable Tie Mount with Zip-Tie, 5 ct. Keep cables bundled and organized. Adhesive backing sticks to walls and floors. 4" Ties included. Included: 5 x Base mounts, black 5 x 4" zip-ties, black Cable Tie Mount with Zip-Tie, 5 ct. Keep cables...

    $3.95
    Add to Cart
  • Replacement Rubber Washer for 1" Sch. 80 Bulkhead

    Pentair Aquatics

    Replacement Rubber Washer for 1" Sch. 80 Bulkhead

    Replacement Rubber Washer for 1" Sch. 80 BulkheadReplacement  Rubber Washer for 1" Sch. 80 BulkheadRubber seal that makes a water tight seal when used with the appropriately sized bulkhead fititng. The rubber washer goes on the 'wet' side of the...

    $3.95
    Add to Cart
  • Spigot Adapter 90 deg. Elbow 0.5" Spigot x 0.5" Insert

    AquaCave

    Spigot Adapter 90 deg. Elbow 0.5" Spigot x 0.5" Insert

    Spigot Adapter 90 deg. Elbow 0.5" Spigot x 0.5" Insert.Fits female PVC fittings...Spigot Adapter 90 deg. Elbow 0.5" Spigot x 0.5" Insert90 deg. Elbow Spigot Adapters Spigot x Insert.Fits female PVC fittings.Product code: 4091Item No. PL-HBF-SA90-05

    $3.95
    Add to Cart
  • John Guest 1/4" x 1/4" NPTF Male Elbow - White

    John Guest (JG)

    John Guest 1/4" x 1/4" NPTF Male Elbow - White

    Color: WhiteJohn Guest Part# : CI489821WTube O.D.: 1/4"Thread NPTF: 1/4"Color: WhiteJohn Guest Part# : CI489821WTube O.D.: 1/4"Thread NPTF: 1/4"How to make a connection: * Cut tube square It is essential that the outside diameter be free of score...

    $3.69
    Add to Cart
  • John Guest 1/4" x 3/8" NPTF Male Adapter - Gray

    John Guest (JG)

    John Guest 1/4" x 3/8" NPTF Male Adapter - Gray

    Color: GrayJohn Guest Part# : PI010823STube O.D.: 1/4"Thread NPTF: 3/8"Color: GrayJohn Guest Part# : PI010823STube O.D.: 1/4"Thread NPTF: 3/8"How to make a connection: * Cut tube square It is essential that the outside diameter be free of score...

    $3.69
    Add to Cart
  • 1" UNISEAL Flexible Bulkhead Tank Adapter 1" UNISEAL Flexible Bulkhead Tank Adapter

    AquaCave

    1" UNISEAL Flexible Bulkhead Tank Adapter

    1" UNISEAL Flexible Tank Adapter (bulkhead), For 3/8" Through 3/16" Wall Thickness Only...1" UNISEAL Flexible Tank Adapter (bulkhead). Why use an expensive bulkhead when you can use a Uniseal®? Just drill a hole in the pipe,...

    $3.49
    Add to Cart
  • Replacement Rubber Washer for 0.75" Sch. 80 Bulkhead

    Pentair Aquatics

    Replacement Rubber Washer for 0.75" Sch. 80 Bulkhead

    Replacement  Rubber Washer for 0.75" Sch. 80 Bulkhead Rubber seal that makes a water tight seal when used with the appropriately sized bulkhead fititng. The rubber washer goes on the 'wet' side of the tank or resevoir. Rubber seal that makes a...

    $3.45
    Add to Cart
  • Clic Clamp #59 - 2" HangerLok Pipe Hanger, X88.59-LOK Clic Clamp #59 - 2" HangerLok Pipe Hanger, X88.59-LOK Clic Clamp #59 - 2" HangerLok Pipe Hanger, X88.59-LOK

    Hangerlok

    Clic Clamp #59 - 2" HangerLok Pipe Hanger, X88.59-LOK

    Clic Clamp #59 HangerLok Pipe Hanger, X88.59-LOK A great way to route your pipes and cords around your aquarium to keep them from shaking around. On the floor, wall, or overhead, these neat plastic hangers will make the job go fast and look great when...

    Was: $3.79
    Now: $3.41
    Add to Cart
  • John Guest 1/4" x 1/4" Union Connector - White

    John Guest (JG)

    John Guest 1/4" x 1/4" Union Connector - White

    Color: WhiteJohn Guest Part# : CI0408WTube O.D.: 1/4"Tube O.D.: 1/4"Color: WhiteJohn Guest Part# : CI0408WTube O.D.: 1/4"Tube O.D.: 1/4"How to make a connection: * Cut tube square It is essential that the outside diameter be free of score marks...

    $3.39
    Add to Cart
  • John Guest 1/4" x 1/8" NPTF Male Elbow - White

    John Guest (JG)

    John Guest 1/4" x 1/8" NPTF Male Elbow - White

    Color: WhiteJohn Guest Part# : CI489821WTube O.D.: 1/4"Thread NPTF: 1/8"Color: WhiteJohn Guest Part# : CI489821WTube O.D.: 1/4"Thread NPTF: 1/8"How to make a connection: * Cut tube square It is essential that the outside diameter be free of score...

    $3.39
    Add to Cart
  • Stainless Steel Hose Clamp, 1.5"

    AquaCave

    Stainless Steel Hose Clamp, 1.5"

    Stainless Steel Hose Clamp, 1.5" Stainless Steel Hose Clamps used for securing standard hose in high-pressure aquarium devices such as canister filters, protein skimmers, water pumps, etc. Stainless Steel Hose Clamp, 1.5" Stainless Steel Hose Clamps...

    $3.19
    Add to Cart
  • Insert Coupling, 1" Insert x 1" Insert

    AquaCave

    Insert Coupling, 1" Insert x 1" Insert

    Insert Coupling, 1" Insert x 1" InsertInsert Coupling, 1" Insert x 1" InsertAll listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible PVC).Product code: 4065Item No. PL-HBF-IC1

    $2.99
    Add to Cart
  • Y Hose Barb Connectors, 0.25" Insert

    AquaCave

    Y Hose Barb Connectors, 0.25" Insert

    Y Hose Barb Connectors, 0.25" InsertPlastic fitting. Translucent white color. Y Hose Barb Connectors, 0.25"Translucent white color. 3 sizes available.All listed "Insert" sizes fit corresponding Flexible Vinyl Hose I.D. size (will not fit Flexible...

    $2.99
    Add to Cart
  • 1" ID (1 1/4" OD) Flexible BLACK Tubing, per foot

    EcoPlus

    1" ID (1 1/4" OD) Flexible BLACK Tubing, per foot

    1" ID (1 1/4" OD) FlexibleBLACK Tubing, per footPremium quality Black flexible vinyl tubing 3/4" ID (1" OD). Sold per linear foot.1" ID (1 1/4" OD) FlexibleBLACK Tubing, per foot.Premium quality Black flexible vinyl tubing 1" ID (1 1/4" OD). Sold per...

    $2.99
    Add to Cart
360 of 503 Items

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