Parker 4ECR4-316 Compression Tube Union Stainless Steel

Product Description

The PARKER 4ECR4-316 is a stainless steel compression tube union designed for high-pressure, wide-temperature-range fluid and gas line connections. Rated to 10300 psi maximum working pressure and capable of handling temperatures from -425 degrees F to 1200 degrees F, this fitting is built for demanding industrial and process applications. The all-compression end connections allow tool-assisted, leak-resistant tube joining without welding or threading. Licensed plumbers, pipefitters, and instrumentation technicians typically specify this type of fitting where corrosion resistance and pressure integrity are critical requirements.

This fitting is suited for use in process piping, instrumentation tubing, and fluid transfer systems where stainless steel construction is required for chemical compatibility or hygiene reasons. The cross shape accommodates four-way tube connections in a single body, making it useful in manifold configurations, sampling systems, or branched distribution lines. Its wide service temperature range makes it appropriate for both cryogenic and high-temperature process environments.

Key Features

• All-compression end connections — no welding or pipe threading required
• Stainless steel construction for corrosion resistance in aggressive media
• Maximum working pressure of 10300 psi for high-pressure service
• Operating temperature range from -425 degrees F to 1200 degrees F
• Cross fitting shape enables four-way tube connections in a single body
• Compact form factor suitable for instrumentation and process tubing layouts

Compatibility

Designed as an OEM-style compression fitting for use in stainless steel instrumentation and process tubing systems where all-compression, four-way union connections are required.

Installation Notes

Installation should be performed by a qualified pipefitter or instrumentation technician familiar with compression fitting assembly procedures. Depressurize and isolate the line completely before disconnecting or installing any compression fitting. Follow the fitting manufacturer's recommended tube preparation and ferrule seating steps — improper tube insertion depth is the most common cause of leak paths in compression assemblies. Reference applicable codes such as ASME B31.3 for process piping installations.