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B & K

ProLine 1/2 in. Compression Brass Nut - 3-Pack

Mfg.#
CP-203NLB
Sku#
2636454
  • Sleeves are what compress onto the tubing, providing a water-tight connection
  • Nuts compress the tubing and connect to the fitting body
  • Inserts provide a solid surface for sleeves to compress onto
  • Inserts are designed for use in vinyl or polyethylene tubing types
  • Applications include air, grease, ice makers, oil & water softeners

* Estimated stock levels as of Sat, Mar 14, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.

Description

Nuts, sleeves and inserts are vital components to making a water-tight compression connection. The sleeves slide over the tube and compress onto the tubing as the nut is tightened onto the fitting. Inserts provide a solid surface for the tube and ferrule to compress onto and should be used only for vinyl, rubber and poly tubing types. Compression fittings are constructed of lead-free brass and are ideal for multiple potable water and other liquid plumbing systems. Each compression connection for each fitting comes with a ferrule and insert for a secure project installation. This type of fitting is ideal for connecting to aluminum tubing, brass pipe, copper tubing and polyethylene tubing.

Nominal information shown.

Specifications

General

Fitting Connection Type Compression
Fitting Material Brass
Fitting Nominal Size 1/2 in.
PSI 100 to 200
Pack Qty 3
Series ProLine
Temperature Rating Min: -10° F; Working: 73° F; Max: 250° F
Type Nut

Dimensions

Height 0.86 in
Length 0.56 in
Weight 0.03 lb
Width 0.75 in

Manufacturing Details
The following information is subject to change without notice

Manufacturer Warranty 1 yr Limited
Prop 65 Warning Warning WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and reproductive harm. For more information, go to www.P65Warnings.ca.gov.

Label Information

Certification, Codes, Standards NSF/ANSI 372,NSF/ANSI 61

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