3/8 in. x 5/8 in. Brass Compression x Sweat Adapter
3/8 in. x 5/8 in. Brass Compression x Sweat Adapter
✓ In stock at our distribution warehouses — typically ships within 1–2 business days.
Flat-rate shipping, nationwide- Orders under $100: $9.95
- $100 – $499.99: $14.95
- Orders $500+: quoted — real freight for your order, not a flat guess
Volume order or crossing a competitor part number? Request a quote — usually answered the same business day.
The 3/8 in. x 5/8 in. Brass Compression x Sweat Adapter is a brass compression straight adapter that transitions between thread sizes or connects tubing to a male or female NPT pipe thread. Dezincification-resistant brass body ensures long service life in water, oil, gas, and compressed air systems.
Technical Specifications
| Specification | Value |
|---|---|
| Body Material | Brass (dezincification-resistant) |
| Connection Type | compression |
| Shape | Adapter |
| End Connections | See product title for sizes |
| Pressure Rating | 500 WOG (brass) / 150 WOG (nylon/polypropylene) |
| Temperature Range | −20°F to 250°F (nylon/poly) / −20°F to 366°F (brass/SS) |
Key Features
- Dezincification-resistant brass — resists corrosion in water, gas, and oil service
- Precision machined for repeatable, leak-free connections
- Compression connection — no soldering, brazing, or special tools required
- Ferrule (sleeve) forms permanent seal on copper, brass, and compatible plastic tubing
- Reusable on copper tube; single-use on soft plastic tubing
Common Applications
Standard in HVAC refrigerant and chilled-water piping, residential gas appliance connections, instrument tubing, water heater and boiler supply lines, and any application requiring a reliable tube-to-thread or tube-to-tube joint without soldering or brazing.
Technical Resources
- Compression Fitting Sizing Chart — Tube OD to fitting size reference
- NPT Thread Tightening Reference — Proper thread engagement turns
- Brass Fitting Types and Sizes Guide — All fitting styles explained