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Compression Fittings

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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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90° Compression Fittings
90 Compression Fitting
Fitting Size Price & Quantity
1/8" OD $3.49
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.

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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.

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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.

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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.

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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

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

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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

frequently asked questions about pipe threading machine


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.

Compression 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.

Compression fittings"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.

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