Parker 61CA-3 Compression Tube Sleeve Brass 3/16 in

Product Description

The PARKER 61CA-3 is a brass compression tube sleeve designed to create a secure, leak-resistant connection in compression fittings used across HVAC, refrigeration, plumbing, and fluid-transfer systems. The sleeve seats between the fitting body and compression nut, deforming onto the tubing wall to form a reliable mechanical seal without threading or soldering. Built from brass for corrosion resistance and durability, it supports a maximum working pressure of 2800 psi and handles temperatures ranging from -65 degrees F to 250 degrees F. Licensed plumbers, HVAC technicians, and pipefitters install this component as part of standard compression assembly work on 3/16 inch OD tubing.

The 61CA-3 sleeve suits residential and light commercial applications wherever 3/16 inch OD tubing is joined using Parker compression-style fittings. Typical install scenarios include refrigerant line connections, instrument tubing, hydraulic pilot lines, and fuel or oil service lines. The NPTF thread standard alignment ensures compatibility within Parker compression fitting assemblies. It is sold individually but carries a minimum order quantity of 5 units, making it practical for stocking or multi-point service calls.

Key Features

• Brass construction resists corrosion in fluid and gas service environments
• Rated to 2800 psi maximum working pressure
• Wide temperature range: -65 degrees F to 250 degrees F
• Fits 3/16 inch outside diameter tubing
• NPTF thread standard for consistent fitment within compression assemblies
• No soldering or threading required — mechanical compression seal

Compatibility

Designed for use with Parker compression fitting assemblies requiring a sleeve for 3/16 inch OD tubing. Consult Parker fitting series documentation to confirm body and nut compatibility before assembly.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or pipefitters following applicable IPC and IFGC guidelines for the service type. Shut off and depressurize the line completely before disassembling any compression fitting. Seat the sleeve squarely on the tubing before threading the compression nut to avoid cocking or incomplete bite. Do not over-tighten the compression nut, as this can split the sleeve or damage the tubing wall.