3 in. Ductile Iron Double Door Wafer Check Valve
3 in. Ductile Iron Double Door Wafer Check Valve
✓ 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 double-door wafer check valve (part 963003) has two aluminum bronze half-disc doors and an EPDM seat inside a thin ductile iron body that mounts between two pipe flanges.
Technical Specifications
| Manufacturer Part Number (MPN) | 963003 |
| Nominal Size | 3 in. |
| Valve Type | Double-door (dual-plate) wafer check valve |
| Flange fit | Installs between Class 125 flanges, per Midland's series sell sheet |
| Pressure rating | Not listed on Midland's product page for this model; ask us and we will confirm it with Midland |
Dimensions
| Inlet-to-outlet length | 2.24 in. |
Materials of Construction
| Body | Ductile iron |
| Doors (discs) | C954 aluminum bronze |
| Seat | EPDM |
| Seal | PTFE |
Materials and dimensions are from Midland's product page for 963003. Ask us for any value not shown, including the temperature rating for your service.
Installation
Install between two pipe flanges with the flow arrow pointing downstream, and follow the manufacturer's installation instructions.
Other Sizes in This Series
Ductile Iron Double Door Wafer Check Valve. Jump to another size or add it straight to your cart:
| Size | Part # |
| 2 in. | 963002 |
| 2-1/2 in. | 963025 |
| 3 in. (this page) | 963003 |
| 4 in. | 963004 |
| 5 in. | 963005 |
| 6 in. | 963006 |
| 8 in. | 963008 |
| 10 in. | 963010 |
| 16 in. | 963016 |
Cross-References & Interchange
Replacing another brand's 3 in. dual-plate wafer check? Send us the part number and flange class and we will check the fit with Midland before you order.
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