8400 Series Standard Materials
| Item Number | Component Part | Standard | SS |
| 1 | Body | Steel WCC | CF8M |
| 2 | Seat Frame & 1/4" Pipe Plug | Steel | 316 SS |
| 3 | Seat | 316 SS | 316 SS |
| 4 | Disc Assembly | 17-4 SS | 17-4 SS |
| 5 | Thread Protector | Steel | 302 SS |
| 6 | Spring Keeper | Steel | 302 SS |
| 7 | Adjustment Screw | Steel | 302 SS |
| 8 | Spring | 17-7 SS | 17-7 SS |
| 9 | Nut | Steel | Steel |
| 10 | Washer | Steel | Steel |
| 11 | Stop Ring | 18-8 SS | 18-8 SS |
| 12 | Thread Seal | Steel & Viton | Steel & Viton |
| 13 | O-Ring | Viton | Viton |
| 14 | DiscSeal | Viton | Viton |
| 15 | O-Ring | Viton | Viton |
| 16 | O-Ring | Viton | Viton |
Alternate Materials and Connections Available