logo-art-240x160.jpgYour small, hometown-attitude company
Keith Specialty Store
6791 Rt 119 Hwy N,  Marion Center, PA 15759
US callers: 800-705-8838
FAX: 724-397-2228
Outside the US: 724-397-8838
8:00am-6:00pm  M-F, 8:00am-3:00pm Sat. (ET)


Notice: Due to damage caused by Hurricane Harvey to the petrochemical facilities in Texas, plastic pipe prices are extremely volatile and availability may become an issue. Prices shown on our site are for our current stock and subject to change. We reserve the right to limit quantities or cancel orders. This effects all types of plastic pipe and tubing.

Plum Brass Compression-Groups

Compression fittings are used primarily for water on copper, vinyl or poly (plastic) tubing.  They may be used for oil, but we recommend flare fittings instead. 

Unless labeled "lead-free," these fittings may not be used in potable water systems.

Do NOT use these compression fittings for lines carrying pressurized gases.

Compression threads are a very different pitch from iron pipe size threads (or national pipe thread taper).  Use a male or female adapter to transition between them.
All compression fittings are listed by OD [outside diameter].  See chart for OD to ID comparison.

O.D. [Outside Diameter] to I.D. [Inside Diameter] Tubing Size Conversion

tubing o.d.   tubing i.d.
1/4" 1/8"
3/8" 1/4"
1/2" 3/8"
5/8" 1/2"
Example:
Use 1/2" flare fittings
on 3/8" i.d. copper.
For small sizes, i.d. plus 1/8" equals o.d..

 

Definitions:  
  comp = male threaded compression fitting.
  mipt = male iron-pipe-size thread fitting.
 

fipt = female iron-pipe-size thread.

  • 04-010.jpg
    1/4 OD compression ferrule sku: 04-004, ($0.09) 3/8 OD compression ferrule sku: 04-006, ($0.13) 1/2 OD compression ferrule sku: 04-008, ($0.15) 5/8 OD compression ferrule sku: 04-010, ($0.18) 1/4 OD nylon compression ferrule sku: 04-012, ($0.19) 3/8 OD nylon compression ferrule sku: 04-014, ($0.14)
  • 04-040.jpg
    1/4 OD compression nut sku: 04-034, ($0.29) 3/8 OD compression nut sku: 04-036, ($0.39) 1/2 OD compression nut sku: 04-038, ($0.64) 5/8 OD compression nut sku: 04-040, ($0.82)
  • 04-311.jpg
    1/4 OD compression coupling sku: 04-305, ($1.36) 3/8 OD compression coupling, lead free sku: 04-307, ($1.97) 1/2 OD compression coupling sku: 04-309, ($2.85) 5/8 OD compression coupling sku: 04-311, ($3.51) 7/8 OD compression coupling sku: 04-313, ($7.85)
  • 04-330.jpg
    1/2 x 3/8 OD compression coupling, lead free sku: 04-325, ($2.59) 5/8 x 3/8 OD compression coupling sku: 04-330, ($3.09)
  • 04-128.jpg
    1/4 OD compression x 1/8 male sku: 04-105, ($1.10) 1/4 OD compression x 1/4 male, lead free sku: 04-106, ($1.27) 3/8 OD compression x 1/8 male sku: 04-125, ($1.18) 3/8 OD compression x 1/4 male sku: 04-126, ($1.50) 3/8 OD compression x 3/8 male, lead free sku: 04-127, ($1.87) 3/8 OD compression x 1/2 male, lead free sku: 04-128, ($2.62) 1/2 OD compression x 1/4 male sku: 04-145, ($1.85) 1/2 OD compression x 3/8 male, lead free sku: 04-146, ($2.18) 1/2 OD compression x 1/2 male sku: 04-147, ($2.92) 5/8 OD compression x 3/8 male sku: 04-165, ($2.58) 5/8 OD compression x 1/2 male sku: 04-166, ($3.11) 7/8 OD compression x 3/4 male sku: 04-185, ($5.38)
  • 04-246.jpg
    3/8 OD compression x 1/4 female sku: 04-225, ($1.73) 3/8 OD compression x 3/8 female sku: 04-226, ($1.82) 3/8 OD compression x 1/2 female sku: 04-227, ($2.21) 1/2 OD compression x 1/2 female sku: 04-246, ($2.64) 5/8 OD compression x 1/2 female sku: 04-247, ($3.09)
  • 04-411.jpg
    3/8 OD compression 90 ell sku: 04-407, ($2.40) 1/2 OD compression 90 ell sku: 04-409, ($3.72) 5/8 OD compression 90 ell sku: 04-411, ($5.22)
  • 04-446.jpg
    1/4 OD compression x 1/8 male ell, lead free sku: 04-425, ($1.57) 3/8 OD compression x 1/4 male ell, lead free sku: 04-445, ($2.13) 3/8 OD compression x 3/8 male ell sku: 04-446, ($2.10) 3/8 OD compression x 1/2 male ell sku: 04-447, ($2.84)
  • 04-511.jpg
    1/4 OD compression tee sku: 04-505, ($2.28) 3/8 OD compression tee sku: 04-507, ($3.56) 1/2 OD compression tee sku: 04-509, ($5.33) 5/8 OD compression tee, lead free sku: 04-511, ($9.16)
  • 375OD-compressionx50copper
    3/8 OD compression x 1/2 copper$2.23
    sku: 04-625
    Qty:
  • 04-807.jpg
    1/4 OD compression shut off valve sku: 04-805, ($5.48) 3/8 OD compression shut off valve sku: 04-807, ($6.43)