Parker PP4CAP Push-to-connect Tube Cap 1/4 in Od

Product Description

The PARKER PP4CAP is a push-to-connect tube cap designed to terminate or dead-end a 1/4-inch OD tube line without tools. The fitting accepts standard push-to-connect tubing and creates a secure, leak-resistant seal rated to 150 psi. Constructed from polypropylene, it is well suited for low-pressure fluid and pneumatic lines where corrosion resistance and chemical compatibility matter. Plumbers, HVAC technicians, and industrial service techs use this fitting to cap off active or unused tube ports quickly during service, maintenance, or system modifications.

This tube cap is used in residential and light commercial plumbing, HVAC condensate and fluid-transfer lines, and pneumatic control systems that use 1/4-inch OD tubing. Its push-to-connect design eliminates the need for threading, soldering, or crimping, making it a practical choice for fast cap-off work in tight spaces or during live-system service calls where downtime must be minimized.

Key Features

• Push-to-connect design — no tools required for installation or removal
• Rated to 150 psi for reliable sealing in low-to-medium pressure applications
• Polypropylene construction provides corrosion resistance and broad chemical compatibility
• Fits 1/4-inch OD tubing for a precise, secure fit
• Tan color for quick visual identification on the line
• Sold individually — single-unit packaging suits service and repair work

Compatibility

Designed as an OEM-style push-to-connect accessory fitting compatible with standard 1/4-inch OD tubing used in plumbing, HVAC, and pneumatic fluid-transfer systems.

Installation Notes

Installation is performed by a licensed plumber, HVAC technician, or qualified mechanic depending on the system involved. Before installing or removing this cap, shut off system pressure and depressurize the line completely. Insert the tubing fully into the fitting until it seats to ensure a leak-free connection. To release the fitting, depress the collet ring evenly while pulling the tube straight back.