| BODY: | Cast Iron per ASTM A126, Class B. |
| DISC: | Bronze per ASTM B584, CDA-836, or Aluminum Bronze per ASTM B148, CDA-952, or Ductile Iron per ASTM A536 (65-45-12). |
| SEAL: | Buna-N (NBR) per ASTM D2000-BG. |
| TRIM: | Type 316 Stainless Steel per ASTM A276. |
| SPRING: | Type 316, or 17-7 PH Stainless Steel per ASTM A313. |