3/8 in. White Nylon Bulkhead Compression Union
3/8 in. White Nylon Bulkhead Compression Union
Overview
The Midland 17090N is a white nylon bulkhead union that passes a 3/8 in. compression tube through a panel or tank wall and connects it to another 3/8 in. tube on the far side. The threaded barrel mounts through a drilled hole and locks with a nut, while 9/16-24 compression ends grip soft nylon or poly tubing. The corrosion-resistant nylon body suits chemical and water service.
Technical Specifications
| Part Number | 17090N |
| Connection 1 | 3/8 in. Compression |
| Connection 2 | 3/8 in. Compression |
| Fitting Type | Bulkhead Union |
| Thread Size | 9/16-24 |
| Color | White |
Materials of Construction
| Body | Nylon (white) |
| Compression Nuts | Nylon |
| Sleeves / Ferrules | Nylon |
Typical Applications
Use this bulkhead union to bring a 3/8 in. tubing line through a tank, enclosure, or panel wall while keeping a serviceable compression joint on both sides: chemical day tanks, RO and filtration cabinets, dosing skids, and equipment enclosures. The nylon body avoids the corrosion of metal bulkheads in wet or chemical environments.
Cross-Reference and Interchange
This 3/8 in. white nylon bulkhead compression union cross-references to these competitor and industry part numbers: 20-6N-0, 50775K374. Replacing one of these? Match nominal size, the compression ends, and the panel thickness the barrel allows, or send us your part number and we will confirm the interchange.
Sizing and Installation Resources
- Compression Fitting Sizing Chart
- Bulkhead Fitting Installation Guide
- Metering Pump Chemical Compatibility Chart
- Chemical Compatibility Chart for Fluid Handling
FAQ
How does it mount?
The threaded barrel passes through a drilled hole in the wall and is secured with the supplied bulkhead nut; seat against a gasket or O-ring for sealing.
What hole size do I drill?
Drill to clear the 9/16-24 barrel; confirm against the fitting before cutting the panel.
Does it seal the tank wall or just the tubing?
The compression ends seal the tubing; the bulkhead nut and gasket seal the wall penetration.
How tight should the nuts be?
Hand-tight plus a short wrench turn on each compression end. Avoid over-torquing nylon.
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.