3 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508
3 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508
✓ In stock at the manufacturer — typically ships within 1–2 business days.
Freight item — ships LTL (Lower 48)- Flat-rate freight: $199 per order
- Freight orders of $5,000 or more ship free
Buying several, or need a liftgate or jobsite delivery? Request an exact freight quote — usually answered the same business day.
The 3 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508 (#962003) is a ductile iron swing check valve that allows flow in one direction and automatically prevents reverse flow (backflow) to protect pumps and equipment. It bolts to standard pipe flanges. Built for reliable, low-maintenance service.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 962003 |
| Nominal Size | 3 in. |
| Type | Swing Check Valve |
| Body Material | Ductile Iron |
| Connection | Flanged |
| Manufacturer designation | AWWA C508 |
Key Features
- Automatic backflow prevention — opens with forward flow, closes on reverse
- Ductile Iron construction
- Flanged connection
- Low-maintenance, self-operating design
- Midland designates this model AWWA C508
Common Applications
Pump discharge lines, water service, HVAC, irrigation, and general industrial flow systems requiring dependable backflow prevention. For potable-water service, ask us before you order — we confirm with the manufacturer whether NSF/ANSI 61 documentation is available.
Technical Resources
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
Technical reference: AWWA C508 swing check valve guide — compare available sizes and configurations.