1/2 in. Brass Spring Check Valve, 500 PSI, Female NPT x Female NPT, NBR Seal
1/2 in. Brass Spring Check Valve, 500 PSI, Female NPT x Female NPT, NBR Seal
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The 1/2 in. Female x Female 500 PSI Check Valve (#46563) is a 500 PSI rated brass check valve with Buna-N (NBR) seals, for backflow prevention in water, air and inert-gas service. Female NPT × Female NPT connections install directly inline with standard pipe threads.
Technical Specifications
| Specification | Value |
|---|---|
| Body Material | Brass body |
| Seal / O-ring | Buna-N (NBR) |
| Pressure Rating | 500 PSI |
| Temperature Rating | 180°F |
| Part Number | 46563 |
Key Features
- Brass body
- Spring-loaded — closes automatically when flow stops or reverses
- Buna-N (NBR) seal — for water, air and inert gas
- Cracking pressure factory-set for reliable sealing
- Compact inline form factor — minimal installation space required
Common Applications
Backflow prevention where a 500 PSI rating is needed on water, air and inert-gas lines. For potable-water service, ask us to confirm lead-free status before you order.
Technical Resources
- Check Valve Types: Swing, Spring, Wafer, Ball — Understand the differences
- Shop Brass Check Valves — Full brass check valve range
Other Sizes in This Series
The 500 PSI Brass Spring Check Valve (Female NPT x Female NPT, Buna-N) is available in the following sizes:
| Size | Part # |
|---|---|
| 1/8 in. | 46560 |
| 1/4 in. | 46561 |
| 1/2 in. (this page) | 46563 |
| 3/4 in. | 46564 |
Expert Guides for This Product
- Check Valve Orientation & Installation — flow direction and mounting rules
- Check Valve Sizing Guide — why line size isn't valve size
- Slamming & Water Hammer — causes and fixes
- Check Valve Leaking? — diagnose and fix it
- Check Valve Chattering — the sizing problem nobody checks
- Buna vs. Viton Seats — which elastomer fits your media