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Order by 2PM MST
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The NIBCO GD-4765 grooved butterfly valve provides manual quarter-turn flow control with a lever-lock handle. Its ductile-iron body has a polyamide coating, and the ductile-iron disc is encapsulated in EPDM.
Choose from the five size-specific manufacturer part numbers below. Each listed valve uses grooved ends for compatible IPS metallic piping; verify pipe dimensions, coupling selection, and clearance before replacing an existing valve.
| Feature | Benefit |
|---|---|
| Quarter-turn lever operation | Moves between open and closed positions through 90 degrees. |
| Lever-lock handle | Lets the operator select and retain a handle position. |
| Extended neck | Provides clearance for insulation up to 2 inches thick. |
| Splined stem-to-disc drive | Avoids pins and bolts through the waterway. |
| Nominal size | Manufacturer part number | Operation |
|---|---|---|
| 2 inch | NLK680D | Lever-lock handle |
| 2-1/2 inch | NLK680E | Lever-lock handle |
| 3 inch | NLK680F | Lever-lock handle |
| 4 inch | NLK680H | Lever-lock handle |
| 5 inch | NLK680J | Lever-lock handle |
| Specification | Detail |
|---|---|
| Series | GD-4765 |
| Ends | Grooved, for compatible IPS pipe |
| Body | Polyamide-coated ductile iron |
| Disc | EPDM-encapsulated ductile iron |
| Stems | Type 416 stainless steel |
| Pressure rating, listed 2–5 inch sizes | 300 PSI |
| Maximum EPDM temperature rating | 200°F; confirm the operating pressure-temperature conditions for the application. |
| Check | Requirement |
|---|---|
| Size and connection | Match the selected valve size, IPS metallic pipe, and grooved coupling requirements. |
| Disc movement | Check for interference from adjacent fittings, lined pipe, or other components before operating the installed valve. |
| Fluid compatibility | Verify the service fluid against NIBCO guidance for EPDM and all wetted materials. |
| Service restrictions | Not recommended for steam service. Do not select EPDM-lined valves for compressed-air lines. |
| System rating | Check valve, pipe, coupling, and other component ratings together; the lowest applicable rating controls. |
| Installation | Follow NIBCO installation guidance and the selected grooved-coupling instructions. |
Need help selecting a grooved butterfly valve? Contact UnitedBuilt through online chat, email parts@unitedbuilt.com, or call 602-253-7750 with your pipe size, coupling details, fluid, pressure, and temperature.
| Model Number | GD-4765 |
|---|---|
| Seal Material | EPDM |
| Valve Type | Inline Control Valve |
| Weight | 7.43 lb |
| Max PSI | 300 psi |