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
PMCD1602 Valved Panel Mount Hose Barb Coupling Body 1/8 ID Barb

5.0

Regular price From $11.23

Sold out

Part #: PMCD1602

Save up to 5% with bulk pricing
Compare

John Guest
John Guest Union Connector Polypro - 5/16

4.0

Regular price From $1.80

Part #: PPM0408W

Save up to 12% with bulk pricing
Compare

Colder Products
APC13004SH In-Line PTF Coupling Body with Shroud 1/4 PTF

5.0

Regular price From $9.35

Part #: APC13004SH

Save up to 5% with bulk pricing
Compare

Colder Products
60300 NSF Valved Panel Mount Hose Barb Coupling Body 1/2 ID Barb

Regular price From $21.97

Part #: 60300

Save up to 5% with bulk pricing
Compare

Sold Out

Colder Products
PMCD1004 Valved Male Thread Coupling Body 1/4 NPT

5.0

Regular price From $7.94

Sold out

Part #: PMCD1004

Save up to 5% with bulk pricing
Compare

Colder Products
NS6D17006 Valved In-Line Hose Barb Coupling Body 3/8 ID Barb

5.0

Regular price From $24.93

Part #: NS6D17006

Save up to 5% with bulk pricing
Compare

Colder Products
EFCD16612 Valved Panel Mount Hose Barb Coupling Body 3/8 ID Barb

Regular price From $19.81

Part #: EFCD16612

Save up to 5% with bulk pricing
Compare

Sold Out

Colder Products
HFC17812 In-Line Hose Barb Coupling Body 1/2 ID Barb

1.5

Regular price From $13.48

Sold out

Part #: HFC17812

Save up to 5% with bulk pricing
Compare

Colder Products
HFC16612 Panel Mount Hose Barb Coupling Body 3/8 ID Barb

5.0

Regular price From $18.70

Part #: HFC16612

Save up to 5% with bulk pricing
Compare

DMFit
DMfit Union Connector - 5/16 Push-in x 1/4 Push-in

5.0

Regular price From $2.08

Part #: AUC0504

Save up to 18% with bulk pricing
Compare

John Guest
John Guest Bulkhead Union Polypro - 3/8

5.0

Regular price From $4.18

Part #: PP1212W

Save up to 12% with bulk pricing
Compare

Colder Products
PLCD29006 Valved In-Line Quick Connect Coupling Insert 3/8 JG

Regular price From $12.29

Part #: PLCD29006

Save up to 5% with bulk pricing
Compare

Colder Products
APCD17006SH NSF Valved In-Line Hose Barb Coupling Body with Shroud 3/8 ID Barb

5.0

Regular price From $7.51

Part #: 42200

Save up to 5% with bulk pricing
Compare

Colder Products
HFCD241257GHT Valved Male Thread Coupling Insert 3/4 MGHT

5.0

Regular price From $16.58

Part #: HFCD241257GHT

Save up to 5% with bulk pricing
Compare

Solventum
APCD13004SH Valved In-Line PTF Coupling Body with Shroud 1/4 PTF

5.0

Regular price From $10.35

Part #: APCD13004SH

Save up to 5% with bulk pricing
Compare

Sold Out

Colder Products
PMCD2202 Valved In-Line Hose Barb Coupling Insert 1/8 ID Barb

Regular price From $7.21

Sold out

Part #: PMCD2202

Save up to 5% with bulk pricing
Compare

Colder Products
PMCD1604 Valved Panel Mount Hose Barb Coupling Body 1/4 ID Barb

4.7

Regular price From $11.41

Part #: PMCD1604

Save up to 5% with bulk pricing
Compare

Colder Products
PMCD220212 Valved In-Line Hose Barb Coupling Insert 1/8 ID Barb

1.0

Regular price From $9.24

Part #: PMCD220212

Save up to 5% with bulk pricing
Compare

Sold Out

Colder Products
DPCD22004 Valved In-Line Hose Barb Coupling Insert 1/4 ID Barb

5.0

Regular price From $10.71

Sold out

Part #: DPCD22004

Save up to 5% with bulk pricing
Compare

JACO Manufacturing Company
JACO 15-6-P-O Polypropylene Union Connector 3/8 OD Tube x 3/8 OD Tube

Regular price From $1.26

Part #: 15-6-P-O

Save up to 5% with bulk pricing
Compare

John Guest
John Guest Union Connector - 3/16

5.0

Regular price From $1.57

Part #: PI0406S

Save up to 13% with bulk pricing
Compare

Basics
Brass Compression Union 3/8 x 3/8 Compression

5.0

Regular price From $2.66

Very low stock

Part #: BCUC66-LF

Save up to 43% with bulk pricing
Compare

Sold Out

Colder Products
APCD17006SH Valved In-Line Hose Barb Coupling Body with Shroud 3/8 ID Barb

Regular price From $7.27

Sold out

Part #: APCD17006SH

Save up to 5% with bulk pricing
Compare

Colder Products
45600 NSF Valved Male Thread Coupling Body 1/4 NPT

5.0

Regular price From $6.72

Part #: 45600

Save up to 5% with bulk pricing
Compare

John Guest
John Guest Bulkhead Union Black Polypropylene - 1/4

5.0

Regular price From $3.21

Part #: PP1208E

Save up to 13% with bulk pricing
Compare

John Guest
John Guest Coupler - 1/2 CTS

Regular price From $4.09

Part #: PEI0420

Save up to 10% with bulk pricing
Compare

Sold Out

Colder Products
LCD10004 Valved Male Thread Coupling Body 1/4 NPT

5.0

Regular price From $18.89

Sold out

Part #: LCD10004

Save up to 5% with bulk pricing

Showing 108 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