Design features:
1. Piston sensed construction.
2. Body and bonnet are brass bar stock.
3. 2" gauge.
5. Delrin bushing for smooth adjustments.
6. Weight: 2kg.
Materials: 1. Body: (1) stock. (2) brass. 2. Bonnet: (1) stock. 3. Piston: brass. 4. Filter: bronze.