Parker 68CA-5-4 Brass Compression Connector 1/4-18

Product Description

The PARKER 68CA-5-4 is a brass compression tube connector designed to create a leak-tight joint between a compression tube end and a male NPT pipe thread. It handles a maximum working pressure of 1200 psi and operates across a temperature range of -65 degrees F to 250 degrees F, making it well-suited for demanding fluid and pneumatic system applications. The NPTF thread standard ensures a pressure-tight seal without relying solely on thread sealant. This fitting is typically installed by licensed plumbers, pipefitters, HVAC technicians, and industrial maintenance trades working on tubing runs in refrigeration, instrumentation, or hydraulic lines.

This connector is used in residential and commercial applications where a copper or brass tube must transition to a male NPT threaded port. Common install scenarios include instrument lines, refrigeration system connections, fuel lines, and pneumatic control tubing. The 1/4-18 thread size is a standard taper pipe thread dimension frequently encountered on valve bodies, manifolds, and equipment ports across HVAC, plumbing, and industrial fluid-handling systems.

Key Features

• Brass construction for corrosion resistance and durability in fluid and gas service
• Compression x MNPT end connections allow tube-to-pipe transitions without soldering
• 1/4-18 NPTF thread standard provides a pressure-tight mechanical seal
• Rated to 1200 psi maximum working pressure
• Wide temperature range: -65 degrees F to 250 degrees F
• Sold individually, no minimum order beyond single unit

Compatibility

Designed as an OEM-style replacement or service fitting for fluid and pneumatic tubing systems requiring a compression-to-male NPT connection at the 1/4-18 thread size.

Installation Notes

Installation should be performed by a qualified plumber, pipefitter, or HVAC technician following applicable codes including IPC and IFGC where relevant. Depressurize and isolate the system before removing or installing any compression fitting. Hand-tighten the compression nut onto the tube and then turn an additional one-quarter to one-half turn with a wrench — do not overtighten, as this can deform the ferrule and compromise the seal. Apply thread sealant or PTFE tape to the MNPT threads as required by the application and local code.