3 in. Wafer Butterfly Valve, Ductile Iron Disc, Buna-N Seat, Gear Operated | 9650G3
3 in. Wafer Butterfly Valve, Ductile Iron Disc, Buna-N Seat, Gear Operated | 9650G3
✓ 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 in. wafer butterfly valve (part 9650G3) is a flangeless, gear-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) | 9650G3 |
| Nominal Size | 3 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 F05 |
| Operator | Gear 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 | 9.8 lb |
| ISO 5211 Top Flange | F05: bolt circle 2.56", 4 × Ø0.276" |
| 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
- Gear operator for controlled quarter-turn actuation under load
- 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, Gear Operated. Jump to another size or add it straight to your cart:
| Size | Part # | Price | Cart |
| 2 in. | 9650G2 | $69.99 | Add to cart |
| 2-1/2 in. | 9650G2.5 | $126.99 | Add to cart |
| 3 in. (this page) | 9650G3 | $149.99 | — |
| 4 in. | 9650G4 | $192.99 | Add to cart |
| 6 in. | 9650G6 | $234.99 | Add to cart |
| 8 in. | 9650G8 | $395.99 | Add to cart |
| 10 in. | 9650G10 | $474.99 | Add to cart |
| 12 in. | 9650G12 | $705.99 | Add to cart |
Prefer a lever? See the lever-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, 9660G3.
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 3 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