This is a Ghibson 531S-2 2-inch lug body butterfly valve featuring an epoxy-coated ductile iron body, stainless steel (CF8M) disc, FKM seat, and manual lever handle. Designed for reliable industrial flow control, it supports ANSI Class 150 flange mounting and vacuum service up to 29 in Hg.
We have inspected this item and we do not have the capability to install the unit to fully test it. There are some cosmetic scuffs and scratches throughout the unit.
Please refer to the photos for more information.
This unit only includes what is photographed in the listing.
Technical Specs
| Item | Butterfly Valve |
| Manufacturer Part Number | 531S-2 |
| Pipe Size | 2 in |
| Connection Type | Lug |
| Disc Alignment | Concentric |
| ANSI Flange Class | Class 150 |
| Bolt Holes | 4 |
| Max. Pressure (CWP) | 250 psi |
| Max. Pressure (Steam) | 15 psi |
| Media Temp. Range | -30 °F to 266 °F |
| For Media | Combustible Gases; Natural Gas; Steam; Water |
| NSF Certifications for Food and Drinking Water | Not Rated |
| 3-A Compliance | Not Rated |
| Vacuum Service Rating | 29 in Hg |
| Flow Coefficient (Cv) | 134.9 |
| Valve Series | N501S |
| Body Material | Ductile Iron |
| Disc Material | Stainless Steel |
| Liner Material | FKM |
| O-Ring Material | Buna-N |
| Stem Material | Stainless Steel |
| Average Surface Roughness (Ra) | 1.2 micron |
| Handle Type | Lever |
| Stop Positions | Unlimited |
| Handle Length | 8.66 in |
| Handle Material | Aluminum |