Skip to content

Free shipping on most orders over $89!

Brands Contact Us

Country/Region

United States (USD $)

Search

Product type

All
Accessories
Air Filters

Need Help?

Call (864) 284-1801

Track Order Cart

Cart Log in Login

Menu

Systems
Replacement Filters & Cartridges
Components
Application
Water Problems
Blog
About Us
Contact Us
Clearance

Need Help?

Call (864) 284-1801

Home
Union Straight (Coupling) Fittings

Union Straight (Coupling) Fittings

Filters

Sort by:

Featured
Most relevant
Best selling

Compare

View as List Grid

FiltersFilter & Sort

Applied Filters

Clear all

Availability

In stock (1283)
Out of stock (800)

Clear

Type

Couplings (1830)

Clear

Brand

Basics (52)
Clack Corporation (2)
Colder Products (1196)
DMFit (6)
Fernco (4)
JACO Manufacturing Company (43)
John Guest (96)
Linktech (232)
neoFit (89)
Parker (31)
SharkBite® (12)
Solventum (51)
Watts AquaLock/SeaTech (16)

Clear

Fitting Connection Size

Clear

Push-In Size

1/4" ID (1)
3/8" ID (1)
1/2" ID (4)
3/4" ID (4)
1/8" OD (1)
5/32" OD (13)
3/16" OD (4)
1/4" OD (120)
5/16" OD (32)
3/8" OD (117)
1/2" OD (43)
5/8" OD (17)
3/4" OD (3)
7/8" OD (10)
1-1/8" OD (8)
4mm OD (5)
5mm OD (1)
6mm OD (6)
8mm OD (18)
10mm OD (18)
12mm OD (5)
15mm OD (10)
22mm OD (6)
28mm OD (2)
3/8 OD - 1/4 OD (1)
4mm (5/32") OD (5)
8mm (5/16") OD (4)

Clear

Stem Size

3/8" OD (1)
5/8" OD (2)
7/8" OD (2)
1-1/8" OD (1)
15mm OD (1)

Clear

Barb Size

1/16" (71)
3/32" (12)
1/8" (134)
5/32" (14)
3/16" (45)
1/4" (209)
5/16" (31)
3/8" (166)
1/2" (49)
5/8" (24)
3/4" (28)
3mm (30)
4mm (1)
5mm (1)

Clear

Seal / O-Ring Material

Buna-N (Nitrile) (641)
EPDM (557)
FKM (Viton®) (70)
Santoprene (TPV) (9)
Silicone (6)

Clear

Valve Type

Non-Valved (614)
Valved (799)

Clear

Application

Commercial-Industrial (2)
Fluids (4)
Medical Equipment (2)
Plumbing (1)
Water Supply (2)

Clear

Color / Finish

Almond (95)
Black (191)
Blue (38)
Brass (38)
Chrome (5)
Clear (2)
Gray (250)
Gray Overmold (1)
Natural (170)
Natural White (20)
Purple (4)
Red (33)
Silver (206)
Teal (10)
White (755)
Yellow (1)

Clear

Shape

Elbow (1)
Straight (1775)

Clear

Series

Clear

Sort by:

Featured
Most relevant
Best selling

Compare

Sold Out

Colder Products
PMC2202 In-Line Hose Barb Coupling Insert 1/8 ID Barb

5.0

Regular price From $1.31

Sold out

Part #: PMC2202

Save up to 5% with bulk pricing
Compare

John Guest
John Guest Union Connector - 1/2

2.0

Regular price From $2.79

Part #: PI0416S

Save up to 12% with bulk pricing
Compare

Sold Out

Colder Products
APC NSF Valved In-Line Compression Coupling Body with Shroud - 1/4"

4.8

Regular price From $11.14

Sold out

Part #: 46000

Save up to 5% with bulk pricing
Compare

Colder Products
HFCD22612 Valved In-Line Hose Barb Coupling Insert 3/8 ID Barb

5.0

Regular price From $12.32

Part #: HFCD22612

Save up to 5% with bulk pricing
Compare

Colder Products
HFC22612 In-Line Hose Barb Coupling Insert 3/8 ID Barb

5.0

Regular price From $5.73

Part #: HFC22612

Save up to 5% with bulk pricing
Compare

Sold Out

Colder Products
HFCD17812 Valved In-Line Hose Barb Coupling Body 1/2 ID Barb

5.0

Regular price From $16.23

Sold out

Part #: HFCD17812

Save up to 5% with bulk pricing
Compare

John Guest
John Guest Union Connector - 5/16

5.0

Regular price From $1.90

Part #: PM0408S

Save up to 15% with bulk pricing
Compare

Sold Out

Colder Products
HFCD171212 Valved In-Line Hose Barb Coupling Body 3/4 ID Barb

5.0

Regular price From $16.63

Sold out

Part #: HFCD171212

Save up to 5% with bulk pricing
Compare

John Guest
John Guest Reducing Union - 5/16 x 1/4

5.0

Regular price From $1.96

Part #: PI201008S

Save up to 13% with bulk pricing
Compare

Colder Products
HFCD261235GHT Valved Female Thread Coupling Insert 3/4 FGHT

5.0

Regular price From $17.79

Part #: HFCD261235GHT

Save up to 5% with bulk pricing
Compare

Sold Out

Colder Products
HFC22812 In-Line Hose Barb Coupling Insert 1/2 ID Barb

Regular price From $5.59

Sold out

Part #: HFC22812

Save up to 5% with bulk pricing
Compare

Colder Products
HFCD10812 Valved Male Thread Coupling Body 1/2 NPT

5.0

Regular price From $15.46

Part #: HFCD10812

Save up to 5% with bulk pricing
Compare

Colder Products
HFCD16657 Valved Panel Mount Hose Barb Coupling Body 3/8 ID Barb

5.0

Regular price From $27.24

Part #: HFCD16657

Save up to 5% with bulk pricing
Compare

John Guest
John Guest 1/2" CTS x 3/8" OD Speedfit Reducing Coupler

4.0

Regular price From $6.57

Part #: PSEI202012

Save up to 10% with bulk pricing
Compare

John Guest
John Guest Union Connector - 15mm x 1/2" OD

5.0

Regular price From $3.70

Part #: NC462

Save up to 12% with bulk pricing
Compare

John Guest
John Guest Reducing Union - 3/8 x 5/16

4.5

Regular price From $2.46

Low stock

Part #: PI201210S

Save up to 13% with bulk pricing
Compare

Colder Products
HFCD161212 Valved Panel Mount Hose Barb Coupling Body 3/4 ID Barb

5.0

Regular price From $21.45

Part #: HFCD161212

Save up to 5% with bulk pricing
Compare

Colder Products
PMCD1002 Valved Male Thread Coupling Body 1/8 NPT

4.5

Regular price From $7.94

Part #: PMCD1002

Save up to 5% with bulk pricing
Compare

Watts AquaLock/SeaTech
Watts AquaLock/SeaTech - Union Connector - 1/2 CTS

5.0

Regular price From $9.35

Part #: 3515-10

Save up to 5% with bulk pricing
Compare

Sold Out

Colder Products
HFCD17612 Valved In-Line Hose Barb Coupling Body 3/8 ID Barb

5.0

Regular price From $16.23

Sold out

Part #: HFCD17612

Save up to 5% with bulk pricing
Compare

Colder Products
NS6D10008 Valved Male Thread Coupling Body 1/2 NPT

5.0

Regular price From $25.34

Part #: NS6D10008

Save up to 5% with bulk pricing
Compare

Colder Products
PLC22006 In-Line Hose Barb Coupling Insert 3/8 ID Barb

Regular price From $1.22

Very low stock

Part #: PLC22006

Save up to 5% with bulk pricing
Compare

Sold Out

Colder Products
PLCD17006 Valved In-Line Hose Barb Coupling Body 3/8 ID Barb

Regular price From $7.66

Sold out

Part #: PLCD17006

Save up to 5% with bulk pricing
Compare

Sold Out

Colder Products
HFCD24812 Valved Male Thread Coupling Insert 1/2 NPT

Regular price From $12.64

Sold out

Part #: HFCD24812

Save up to 5% with bulk pricing
Compare

John Guest
John Guest 1/2" CTS x 1/4" OD Speedfit Reducing Coupler

5.0

Regular price From $6.43

Part #: PSEI202008

Save up to 10% with bulk pricing
Compare

John Guest
John Guest Bulkhead Union - 1/2 x 1/2

Regular price From $7.57

Very low stock

Part #: PI1216S

Save up to 53% with bulk pricing
Compare

Colder Products
PMC2203 In-Line Hose Barb Coupling Insert 3/16 ID Barb

Regular price From $1.53

Part #: PMC2203

Save up to 5% with bulk pricing

Showing 54 of 1830

Want to learn more?

Your cart

Your cart is empty

Subtotal:$0.00 USD

Loading...

M - F 8:00am to 7:00pm EST

Call: (864) 284-1801

Toll Free: (877) 930-7295

2299 Ridge Road Greenville, SC 29607

3195 W Professional Circle Suite 200 - Salt Lake City, UT 84104

Facebook
YouTube
Instagram
LinkedIn

Shop

Water Filtration & Treatment Systems
Pumps & Motors
Fittings & Valves
Filter Housings & Components
Filters & Media
Tubing & Hoses
Food & Beverage Filtration Systems
Clearance
Parts & Accessories
Under-Sink & Countertop Water Filters
Brands
View All Categories

Help

Track My Order
Get a Quote
Shipping
Bulk Pricing
Returns
Contact Us

Info

About Us
neo™ Brand
Cleanroom Facility
Blog
Careers
Local Pickup
Industries
Certifications & Quality Standards

Payment methods accepted

Country/Region

United States (USD $)

© 2026 Fresh Water Systems - All Rights Reserved

Terms and Conditions
Privacy Policy
Accessibility

Compare /3

Loading...

Loading...

Choose options

Item added to your cart.

View cart