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- Compression Fittings -

go to Sharkbite fittings - go to quick release hose fittings
go to acetal compression fittings - go to copper fittings - go to brass fittings - go to brass hose adapters
go to brass barbed fittings - go to FAQ's about these fittings - go to compression fitting installation instructions


Fitting sizes shown are determined by the outside diameter (OD) of the pipe to be used.

Compression Sleeves
A.K.A. Ferrules
Sleeve
Sleeve Size Price & Quantity
1/8" OD $0.20
3/16" OD $0.25
1/4" OD $0.11
5/16" OD $0.26
3/8" OD $0.16
Sleeve Size Price & Quantity
7/16" OD $0.57
1/2" OD $0.25
5/8" OD $0.32
3/4" OD $0.85
7/8" OD $0.87

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Compression Nuts
Nut
Nut Size Price & Quantity
1/8" OD $0.57
3/16" OD $0.47
1/4" OD $0.35
5/16" OD $0.61
3/8" OD $0.40
Nut Size Price & Quantity
7/16" OD $1.34
1/2" OD $1.03
5/8" OD $0.82
3/4" OD $2.61
7/8" OD $2.16

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Compression Unions / Couplers / Couplings
Unions
Union Size Price & Quantity
1/8" OD $1.91
3/16" OD $1.47
1/4" OD $1.24
5/16" OD $2.23
5/16" OD x 1/4" OD $4.84
3/8" OD x 1/4" OD $1.80
3/8" OD $1.59
Union Size Price & Quantity
7/16" OD $8.16
1/2"OD x 3/8" OD $3.18
1/2" OD $2.71
5/8" OD x 3/8" OD $3.42
5/8" OD $4.30
7/8" OD $6.81

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Compression Caps
Cap
Cap Size Price & Quantity
1/4" OD $0.65
3/8" OD $0.64
1/2" OD $1.52
5/8" OD $1.55

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Compression Tees
tee

Tee Size Price & Quantity
1/8" OD $4.97
1/4" OD $3.14
3/8" OD $3.38
1/2" OD $5.69
5/8" OD $7.31
3/8" OD x 3/8" OD x 1/4" OD $5.46
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to flare fittings


90° Compression Fittings
90 Compression Fitting
Fitting Size Price & Quantity
1/8" OD $4.79
3/16" OD $3.99
1/4" OD $2.47
3/8" OD $2.48
5/16" OD $4.29
1/2" OD $4.09
5/8" OD $6.15

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Compression x Fips Adapters
Fips Adapter
Adapter Size Price & Quantity
1/4" OD Comp x 1/8" Fips $1.93
1/4" OD Comp x 1/4" Fips $2.11
1/4" OD Comp x 3/8" Fips $2.96
1/4" OD Comp x 1/2" Fips $2.95
3/8" OD Comp x 1/8" Fips $2.89
3/8" OD Comp x 1/4" Fips $2.02
3/8" OD Comp x 3/8" Fips $2.97
3/8" OD Comp x 1/2" Fips $2.99
Adapter Size Price & Quantity
1/2" OD Comp x 3/8" Fips $3.19
1/2" OD Comp x 1/2" Fips $3.45
1/2" OD Comp x 3/4" Fips $7.56
5/8" OD Comp x 1/2" Fips $4.19
5/8" OD Comp x 3/4" Fips $4.49
3/4" OD Comp x 3/4" Fips $13.79
7/8" OD Comp x 3/4" Fips $5.63

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Need to seal your pipe threads? Click here for PTFE tape and pipe dope.


Compression x Mips Adapters
Mips Adapter
Adapter Size Price & Quantity
1/8" OD Comp x 1/8" Mips $1.11
3/16" OD Comp x 1/8" Mips $1.35
1/4" OD Comp x 1/8" Mips $1.35
1/4" OD Comp x 1/4" Mips $1.35
1/4" OD Comp x 3/8" Mips $1.80
1/4" OD Comp x 1/2" Mips $2.04
5/16" OD Comp x 1/8" Mips $2.03
5/16" OD Comp x 1/4" Mips $2.03
5/16" OD Comp x 1/2" Mips $6.23
3/8" OD Comp x 1/8" Mips $2.09
3/8" OD Comp x 1/4" Mips $1.90
3/8" OD Comp x 3/8" Mips $1.97
3/8" OD Comp x 1/2" Mips $2.63
Adapter Size Price & Quantity
3/8" OD Comp x 3/4" Mips $4.05
7/16" OD Comp x 1/4" Mips $6.22
7/16" OD Comp x 3/8" Mips $6.27
1/2" OD Comp x 1/4" Mips $3.17
1/2" OD Comp x 3/8" Mips $2.73
1/2" OD Comp x 1/2" Mips $2.25
1/2" OD Comp x 3/4" Mips $4.25
5/8" OD Comp x 1/2" Mips $3.39
5/8" OD Comp x 3/4" Mips $4.29
3/4" OD Comp x 3/4" Mips $6.49
7/8" OD Comp x 1/2" Mips $5.95
7/8" OD Comp x 3/4" Mips $5.49
7/8" OD Comp x 1" Mips $12.95

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Need to seal your pipe threads? Click here for PTFE tape and pipe dope.


OD Comp x Mips 90°
OD Comp x Mips 90 Fitting
Fitting Size Price & Quantity
1/8" OD x 1/8" Mips $3.20
3/16" OD x 1/8" Mips $3.12
1/4" OD x 1/8" Mips $2.48
1/4" OD x 1/4" Mips $2.23
5/16" OD x 1/8" Mips $2.91
3/8" OD x 1/8" Mips $2.26
3/8" OD x 1/4" Mips $2.93
Fitting Size Price & Quantity
3/8" OD x 3/8" Mips $2.44
3/8" OD x 1/2" Mips $3.17
1/2" OD x 3/8" Mips $3.20
1/2" OD x 1/2" Mips $4.52
5/8" OD x 3/8" Mips $4.54
5/8" OD x 1/2" Mips $5.61

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Need to seal your pipe threads? Click here for PTFE tape and pipe dope.


Plastic Sleeves For Soft Tubing
Plastic Sleeve
Plastic Sleeves Price & Quantity
1/4" OD $0.28
5/16" OD $0.39
3/8" OD $0.44
1/2" OD $0.45
5/8" OD $0.53

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Brass Inserts For Soft Tubing
Brass Insert
Brass Inserts Price & Quantity
1/4" OD $0.29
5/16" OD $0.38
3/8" OD $0.29
1/2" OD $0.64
5/8" OD $1.05

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Compression Fitting Sample For Soft Tubing
Before
The size of the plastic sleeve and the brass insert must be chosen according to the outside dimensions of the clear vinyl tubing to be used.
Before
When using plastic tubing, the "plastic sleeve" must be used and the "brass insert" must be used.
Before
The plastic sleeve is used to seal against the outside of the plastic tubing and the tapered end will seal into the compression fitting.
The brass insert is used to keep the inside of the plastic tubing from collapsing as the compression fitting is tightened.


Thread sealants (IPS threads)
Product Description Price & Quantity
PTFE thread sealing tape PTFE thread sealing tape 1/2" x 260" roll $0.38
1/2" x 520" roll $0.54
1 oz. pipe dope 1 oz. Great White Basic Pipe Joint Compound
- Small, convenient tube
- Great for most plastics and metals
$2.03
Thread Sealing Compound 4 oz. High Quality TU-555 Pipe Joint Compound
- Available in larger sizes, too
- Great for most plastics and metals
$5.39

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Brass Quick Tee Adapters
Create a branch outlet on a supply stop without shutting off the main water supply
Adapter Features of the Quick Tee Adapter:
  • Durable brass construction
  • Great for hot or cold water lines
  • Ideal for ice makers, dishwashers, & water filter faucets
  • Swivel screw on hook-up means no drilling or extra valves are needed
  • Purchase extra adapters to connect multiple accessories
  • Available in a variety of sizes to fit your valve and application
Before The Quick Tee Adapter
Before
The Quick Tee Installed
Installed
After Quick Tee Adapter Installed
After

Brass Quick Tee Adapters - Size A x Size B x Size C Price & Quantity
3/8" female compression x 3/8" male compression x 1/4" male compression $5.95
3/8" female compression x 3/8" male compression x 3/8" male compression $5.97
1/2" female compression x 1/2" male compression x 3/8" male compression $6.77
1/2" female IPS slip joint x 1/2" male IPS slip joint x 1/4" male compression $6.29
1/2" female IPS slip joint x 1/2" male IPS slip joint x 3/8" male compression $6.97

Note: this item is not available for shipping to locations in CA or VT.

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We also offer many straight and angle stops as well as stainless steel flexible water supply lines.


Sizes are determined by outside diameter (OD) of pipe

Common Terms - and what they mean
  • Comp: Compression
  • OD: Outside diameter of pipe
  • Mips: Male pipe threads on the outside of fitting
  • Fips: Female pipe threads on the inside of fitting


Most Frequently Asked Questions

versus? "Where do you use compression versus flare?"
flare and compression fittings We prefer flare with soft tubing over 3/8"od in size and compression fittings on all hard copper and soft tubing 3/8"od and smaller. Don't use compression fittings on gas connections at all as most codes do not allow it nor do we recommend it.

content?"Since these are brass fittings do they contain lead?"
flare and compression fittingsMost of these fittings do contain a very small amount of lead. Consider that for many years copper fittings and pipe were soldered together with 50% lead and now little lead may be used by law. Same with these brass fittings. There is a small amount of lead in them. The more acidic the water, the more tends to leach out. Should you be concerned? Some would argue that any amount is bad, and they would not use it for potable water. Others argue that plastics will be the new "asbestos" of the future. We don't know, and we cannot recommend these fittings for potable water; but we can say that we ourselves drink our own water from and through these fittings.

"I have standard 1/2" copper solder fittings, can I use 1/2" compression fittings in its place?"
Probably not. In the plumbing trade when we say 1/2" soldered fittings we mean fittings that use 1/2" nominal pipe (which means 5/8" outside diameter pipe). To figure what size pipe to use with "standard" solder (not compression like those above) plumbing fittings, you must add 1/8" to your measurements to know the o.d. (outside diameter) of the pipe. 1/2" nominal fittings use 5/8" od pipe; 3/4" fittings uses 7/8" pipe and so on. It can all be confusing. The above compression fittings use the outside diameter of pipe, so a 1/2" compression fitting uses 1/2" outside diameter copper pipe. "Standard" plumbing terminology with copper solder fittings use "nominal" pipes but not so with compression fittings. That means a "standard" 1/2" soldered fitting uses the same pipe as 5/8" compression pipe. For above compression fittings simply measure the outside diameter of the pipe and that is the size of the compression fitting that you should order. 1/2" outside pipe means you need to order 1/2" compression fittings.

"How will I know which size compression fittings to use for my copper tubing?"
compression fittings You will need to measure the outside diameter of your copper tubing. Whatever the outside diameter of your copper tubing is will be the size of the compression fitting you will need. For instance, if the outside diameter of your copper tubing is 1/4" then the compression fitting will need to be 1/4". Compression fittings are not sized like copper sweat fittings.

"I have clear vinyl tubing, can I use these compression fittings with it?"
compression fittings It really depends on the outside and the inside diameter of the clear vinyl tubing. When using plastic tubing, the "plastic sleeve" must be used and the "brass insert" must be used. The plastic sleeve is used to seal against the outside of the plastic tubing and the tapered end will seal into the compression fitting. Plastic sleeves are used because the brass compression sleeves can more easily cut into the plastic tubing, potentially causing a leak. The brass insert is used to keep the inside of the plastic tubing from collapsing as the compression fitting is tightened. The size of the plastic sleeve and the brass insert must be chosen according to the outside dimensions of the clear vinyl tubing to be used. The brass insert must be able to fit snugly inside the clear vinyl tubing and will generally work if the clear vinyl tubing has 1/16" wall thickness.

"What is the difference between 'nominal' dimensions and 'outside diameter (OD)' dimensions?"
compression fittings Nominal is the term used to describe most pipe and fitting measurements in the plumbing industry. Nominal refers to the inside diameter measurement of the pipe. The actual inside pipe measurements will vary slightly due to the wall thickness of the pipe, so it is referred to as "nominal" meaning a small variance of size. The outside diameter (OD) dimensions refer to the actual outside diameter of the pipe. The outside diameter dimensions of pipe are a constant size which allow pipe fittings to be used with the same type of piping with multiple grades of wall thickness.


read many interesting quotes, such as:
"Understanding replaces imaginary fears with real ones." - Mason Cooley

We hope that we have helped you with compress fittings at PlumbingStore.com



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