5/16 in. x 1/4 in. Push-In x Male NPT Composite Adapter
5/16 in. x 1/4 in. Push-In x Male NPT Composite Adapter
Overview
The Midland 20531C is a composite push-to-connect male connector that adapts a 5/16 in. push-in tube port to a 1/4 in. male NPT thread. The corrosion-proof composite body makes it a low-cost, lightweight choice for terminating 5/16 in. tubing at a threaded port in chemical and washdown service. Rated to 150 psi from 32°F to 140°F.
Technical Specifications
| MPN | 20531C |
| Fitting Type | Male Connector (Adapter) |
| Tube Size | 5/16 in. Push-to-Connect |
| Thread Size | 1/4 in. Male NPT (1/4-18) |
| Pressure Rating | 150 psi |
| Temperature Rating | 32°F to 140°F |
Materials of Construction
| Body | Composite (glass-reinforced polymer) |
| Connection | Push-to-Connect collet and o-ring seal |
Typical Applications
Used to terminate 5/16 in. tubing into a 1/4 in. female NPT port on a manifold, valve, or panel in low-pressure air, coolant, and chemical-dosing lines. The composite body resists corrosion and keeps weight down, making it well suited to washdown and mildly aggressive environments.
Cross-Reference and Interchange
This composite male connector cross-references to these competitor and industry part numbers: 268PPC-5B. Replacing one of these? Match nominal size, connections, and rating, or send us your part number and we will confirm the interchange.
Sizing and Installation Resources
- Push-to-Connect Fittings Selection Guide
- NPT Thread Tightening: Turns Past Hand-Tight
- Pipe Size Reference Chart
- Teflon Tape vs. Pipe Dope
Frequently Asked Questions
What does the 20531C connect?
It adapts 5/16 in. OD push-in tubing to a 1/4 in. male NPT thread.
What is the pressure rating?
150 psi over 32°F to 140°F.
Do I need thread sealant?
Apply PTFE tape or pipe dope to the male NPT thread; the push-in port seals on the o-ring and needs none.
Is the composite body corrosion resistant?
Yes, the glass-reinforced polymer resists corrosion and many chemicals; verify compatibility for your fluid.
WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.