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 (1266)
Out of stock (807)

Clear

Type

Couplings (1830)

Clear

Brand

Basics (52)
Clack Corporation (2)
Colder Products (1195)
DMFit (6)
Fernco (4)
JACO Manufacturing Company (43)
John Guest (96)
Linktech (232)
neoFit (90)
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 (5)
1/4" OD (122)
5/16" OD (32)
3/8" OD (117)
1/2" OD (44)
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 (3)

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" (50)
5/8" (24)
3/4" (28)
3mm (30)
4mm (1)
5mm (1)

Clear

Seal / O-Ring Material

Buna-N (Nitrile) (643)
EPDM (585)
FKM (Viton®) (70)
Santoprene (TPV) (9)
Silicone (6)

Clear

Valve Type

Non-Valved (614)
Valved (798)

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 (251)
Gray Overmold (1)
Natural (170)
Natural White (20)
Purple (4)
Red (33)
Silver (206)
Teal (10)
True White (1)
White (753)
Yellow (1)

Clear

Shape

Elbow (1)
Straight (1814)

Clear

Series

Clear

Sort by:

Featured
Most relevant
Best selling

Compare

Colder Products
PLCD130M10 Valved In-Line 10mm PTF Coupling Body

Regular price From $14.14

Part #: PLCD130M10

Save up to 5% with bulk pricing
Compare

Watts AquaLock/SeaTech
Watts AquaLock/SeaTech - Reducing Union - 1 CTS x 3/4 CTS

Regular price From $11.10

Part #: 3515R-1814

Save up to 25% with bulk pricing
Compare

Colder Products
19600 NSF Valved Hose Barb Coupling Insert 1/4 ID Barb

Regular price From $19.14

Part #: 19600

Save up to 5% with bulk pricing
Compare

Basics
Schedule 80 PVC Union 1" SLIP x 1" SLIP with Viton O-ring

Regular price From $7.01

Very low stock

Part #: 897-010

Save up to 7% with bulk pricing
Compare

Colder Products
PLCD120M10 Valved Panel Mount PTF Coupling Body 10mm PTF

Regular price From $18.01

Part #: PLCD120M10

Save up to 5% with bulk pricing
Compare

Colder Products
PMC12025 Panel Mount PTF Coupling Body 5/32 PTF

Regular price From $11.76

Part #: PMC12025

Save up to 5% with bulk pricing
Compare

Colder Products
PLCD2200606 Valved In-Line Hose Barb Coupling Insert 3/8 ID Barb

Regular price From $9.99

Very low stock

Part #: PLCD2200606

Save up to 5% with bulk pricing
Compare

Colder Products
LQ4D24006RED Valved Pipe Thread Liquid Cooling Coupling Insert 3/8 NPT Warm Red

Regular price From $60.30

Part #: LQ4D24006RED

Save up to 5% with bulk pricing
Compare

Colder Products
LQ4D10004RED Valved Pipe Thread Liquid Cooling Coupling Body 1/4 NPT Warm Red

Regular price From $89.00

Part #: LQ4D10004RED

Save up to 5% with bulk pricing
Compare

Colder Products
PLC12006 Panel Mount PTF Coupling Body 3/8 PTF

Regular price From $15.38

Part #: PLC12006

Save up to 5% with bulk pricing
Compare

Linktech
LinkTech 40AC Series Panel Mt. Female, Valved, 1/4" HB, Natural Acetal,

Regular price From $13.52

Part #: 40ACV-SB3-04

Save up to 15% with bulk pricing
Compare

neoFit
NeoFit - Acetal Natural White Reducing Union Connector- 1/2"tube OD x 3/8"tube OD

Regular price From $2.64

Part #: AUC86-W

Save up to 9% with bulk pricing
Compare

neoFit
NeoFit - Acetal Black Bulkhead Connector 4mm (5/32") tube

Regular price From $2.78

Part #: ABU44M-E

Save up to 9% with bulk pricing
Compare

Parker
Parker TrueSeal Push in Tube Fitting - 3/8 OD - 3/8 OD - FB6MC6-HBLK

Regular price From $3.16

Part #: FB6MC6-HBLK

Save up to 5% with bulk pricing
Compare

SharkBite®
SharkBite® U3016LF Lead-Free Brass Push-to-Connect Slip Coupling - 3/4" x 3/4"

Regular price From $16.19

Part #: U3016LF

Save up to 5% with bulk pricing
Compare

Colder Products
26700 NSF Valved Panel Mount Hose Barb Coupling Body 3/8 ID Barb

Regular price From $16.29

Part #: 26700

Save up to 5% with bulk pricing
Compare

Colder Products
PMCD20M42 Valved In-Line PTF Coupling Insert 4mm PTF

Regular price From $16.22

Part #: PMCD20M42

Save up to 5% with bulk pricing
Compare

Colder Products
PLM20004 Multi-Mount Non-Valved PTF Coupling Insert - 1/4 PTF Acetal

Regular price From $13.99

Part #: PLM20004

Save up to 5% with bulk pricing
Compare

Colder Products
MC1304 In-Line PTF Coupling Body 1/4 PTF

Regular price From $30.78

Part #: MC1304

Save up to 5% with bulk pricing
Compare

Colder Products
PLCD400M10 Valved Panel Mount 10 MM PTF Coupling Insert 3/8 PTF

Regular price From $15.85

Part #: PLCD400M10

Save up to 5% with bulk pricing
Compare

Colder Products
23300 NSF Non-Valved In-Line Coupling Insert 1/4 PTF

Regular price From $5.27

Very low stock

Part #: 23300

Save up to 5% with bulk pricing
Compare

Colder Products
PLCD10004VBLK Valved Black Male Thread Coupling Body 1/4 NPT FKM (Viton) O-ring

Regular price From $11.99

Very low stock

Part #: PLCD10004VBLK

Save up to 5% with bulk pricing
Compare

Sold Out

Colder Products
83200 NSF Non-Valved In-Line Hose Barb Coupling Body 1/2 ID Barb

Regular price From $18.12

Sold out

Part #: 83200

Save up to 5% with bulk pricing
Compare

Colder Products
PMC4203 Panel Mount Hose Barb Coupling Insert 3/16 ID Barb

Regular price From $6.36

Part #: PMC4203

Save up to 5% with bulk pricing
Compare

JACO Manufacturing Company
JACO 20-12-P-PG Polypropylene Bulkhead Union 3/4 OD Tube x 3/4 OD Tube

Regular price From $4.71

Part #: 20-12-P-PG

Save up to 5% with bulk pricing
Compare

Sold Out

Colder Products
TMF01 Non-Valved Hose Barb Fitting Insert 1/16 ID Barb

Regular price From $1.74

Sold out

Part #: TMF01

Save up to 5% with bulk pricing
Compare

Colder Products
TFFD02MWHT Valved Hose Barb Fitting Body 1/8 ID Barb

Regular price From $9.70

Part #: TFFD02MWHT

Save up to 5% with bulk pricing

Showing 837 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