| Seal Materials | Fluorocarbon FKM is standard. Buna N, ethylene propylene, and neoprene are available factory-installed or in replacement seal kits for field assembly. |
| Spring Kits | Replacement spring kits are available for all models |
| Manual Override Handles | A manual override handle opens the valve without changing the set pressure. Available factory-installed or in kits for field assembly. |
| Special Cleaning and Packaging | Swagelok Special Cleaning and Packaging (SC-11) to ensure compliance with product cleanliness requirements stated in ASTM G93 Level C. |
