8 in. Wafer Butterfly Valve, Ductile Iron Disc, Buna-N Seat, Lever Operated | 9650L8
8 in. Wafer Butterfly Valve, Ductile Iron Disc, Buna-N Seat, Lever Operated | 9650L8
✓ In stock at our distribution warehouses — typically ships within 1–2 business days.
Freight item — ships LTL (Lower 48)- Flat-rate freight: $199 per order
- Orders $4,999+: quoted freight — priced for your dock, liftgate, and timeline
Buying several, or need a liftgate or jobsite delivery? Request an exact freight quote — usually answered the same business day.
The 8 in. wafer butterfly valve (part 9650L8) is a flangeless, lever-operated valve with a ductile iron disc and Buna-N seat, built for reliable on/off and throttling control in water, HVAC, and industrial process lines. The ductile iron wafer body installs between standard ANSI B16.5 125/150 lb pipe flanges for a compact, lightweight fit.
Technical Specifications
| Manufacturer Part Number (MPN) | 9650L8 |
| Nominal Size | 8 in. |
| Valve Style | Wafer (flangeless) |
| Design Code | API 609 Class A |
| Face-to-Face | API 609 |
| End Standard | ANSI B16.5 125 lb / 150 lb |
| Inspection & Test | API 598 |
| Top Flange | ISO 5211 F10 |
| Operator | Lever Handle |
Materials of Construction
| Body | Ductile Iron |
| Disc | Ductile Iron |
| Seat | Buna-N (Nitrile) |
| Stem | 410 Stainless Steel, pinned to disc |
| Packing | PTFE |
Dimensions
| Weight | 30.3 lb |
| ISO 5211 Top Flange | F10: bolt circle 4.92", 4 × Ø0.47" |
| Face-to-Face Length | Per API 609 — contact us for the certified dimension sheet |
Key Features
- Wafer body — compact and lightweight, mounts between pipe flanges
- Ductile iron disc with Buna-N seat for reliable bubble-tight shutoff per API 598 testing
- Quarter-turn lever operation with position lock
- 410 stainless stem, pinned to the disc — no slippage
- Center-disc structure: low operating torque, straight-line flow curve
- ISO 5211 top flange — actuator-ready
Other Sizes in This Series
Wafer Butterfly Valve, Ductile Iron Disc, Buna-N Seat, Lever Operated. Jump to another size or add it straight to your cart:
| Size | Part # | Price | Cart |
| 2 in. | 9650L2 | $69.99 | Add to cart |
| 2-1/2 in. | 9650L2.5 | $74.99 | Add to cart |
| 3 in. | 9650L3 | $101.99 | Add to cart |
| 4 in. | 9650L4 | $126.99 | Add to cart |
| 5 in. | 9650L5 | $141.99 | Add to cart |
| 6 in. | 9650L6 | $182.99 | Add to cart |
| 8 in. (this page) | 9650L8 | $307.99 | — |
| 10 in. | 9650L10 | $361.99 | Add to cart |
| 12 in. | 9650L12 | $471.99 | Add to cart |
Need controlled actuation under load? See the gear-operated version of this size. Pumping chemicals or wastewater? The stainless disc / EPDM seat version handles what Buna-N can't.
Need lug-style construction for dead-end or downstream isolation? See the lug-body version, 9660L8.
Common Applications
Water distribution and treatment, HVAC chilled and condenser water, fire protection, irrigation, compressed air, and general industrial flow isolation and throttling. Buna-N seats also handle light oils and fuels that EPDM cannot.
Cross-References & Interchange
Replacing another brand's 8 in. wafer butterfly valve? API 609 Class A wafer bodies interchange dimensionally across manufacturers — match nominal size, seat and disc materials, and flange class, or send us your part number and we will confirm the fit.
Availability
In stock — ships direct from the manufacturer, typically 1–3 business days.
Technical Resources
Expert Guides for This Product
- Won't Seal or Won't Turn? — field troubleshooting
- Selection Guide — wafer vs. lug vs. flanged
- Seat Materials — EPDM vs. Buna-N vs. Viton
- Operator Sizing — when a lever stops being enough
- Dimensions & Cv Chart — flow data by size