Parker 37PTCSP-4-6 Push-to-connect Plug-in Adapter

Product Description

The PARKER 37PTCSP-4-6 is a push-to-connect plug-in adapter fitting designed for tube-to-stem connections in fluid and pneumatic distribution systems. It accepts 1/4-inch OD tubing and delivers a tool-free, leak-resistant connection suitable for compressed air, water, and compatible fluid lines rated up to 250 psi. The composite body keeps weight low while standing up to the mechanical demands of typical service environments. Licensed tradespeople and experienced technicians install this fitting during new equipment builds, panel plumbing, or service repairs where a fast, reliable tube termination is required.

This fitting is suited for residential and light commercial HVAC, refrigeration, and fluid-handling applications where 1/4-inch OD tubing connects to a stem port. Its push-to-connect design reduces installation time compared to compression or flare fittings, making it a practical choice for high-volume service work or confined-space installs. The nitrile O-ring provides a reliable seal across a broad range of system fluids and operating conditions.

Key Features

• Push-to-connect design allows tool-free tube insertion and removal
• Rated to 250 psi for use in compressed air and fluid distribution lines
• Composite body construction for corrosion resistance and reduced weight
• Nitrile O-ring seal compatible with a wide range of system fluids
• Accepts 1/4-inch OD tubing for consistent, repeatable fitment

Compatibility

Designed as an OEM-style replacement or service fitting for systems using 1/4-inch OD push-to-connect tube-to-stem connections in HVAC, pneumatic, and fluid-handling applications.

Installation Notes

Installation should be performed by a qualified technician. Before installing or removing this fitting, depressurize and isolate the circuit completely. Ensure tubing is cut cleanly and squarely, with no burrs, to guarantee a proper O-ring seal. Verify that the tubing OD matches the fitting specification before insertion to prevent leaks or fitting damage.