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8300 Series Available Orifice Sizes
| API ORIFICE SIZE | ORIFICE DIAMETER (in) | ORIFICE AREA (sq in) | Kd (gas) | Kd (liquid) | SLOPE | FLOW FACTOR | MINIMUM SET PRESSURE (psig) | MAXIMUM SET PRESSURE (psig) |
| J | 1.350 | 1.431 | 0.808 | 0.637 | 21.2 | 34.62 | 15 | 1000 |
| K | 1.650 | 2.138 | 0.741 | 0.62 | 29.03 | 50.95 | 15 | 500 |
Elastomer Materials
| Material | Durometer | Temperature | Set Pressure | ||
| Min | Max | Min | Max | ||
| Viton | 90 | -15 | 400 | 50 | 3000 |
| Viton | 50 | -15 | 400 | 15 | 150 |
| HNBR | 80 | -25 | 325 | 15 | 2500 |
| EPDM | 80 | -70 | 250 | 15 | 2500 |
| TEFLON | - | -420 | 450 | 250 | 5500 |