ITT Engineered Valves
Diaphragms for Dia-Flo Straightway Valves
Straightway diaphragms are the sealing and wear element for Dia-Flo straightway valves and are offered in several FDA-compliant elastomer grades plus PTFE. Grades cover services from foods and water to strong acids, chemicals, and abrasives, in sizes from 1 inch to 12 inches. Diaphragms at their maximum temperature cannot be used at maximum pressures.
Straightway Diaphragm Grades
| Grade SB - Black Butyl (FDA) | 1-4 in; 0 to 200 F (-18 to 93 C); chemicals, stronger acids, hi-temp, abrasives |
|---|---|
| Grade SE - EPDM (FDA) | 1-12 in; -20 to 225 F (-29 to 107 C); foods, oils, water, abrasives |
| Grade SP - Buna N NBR (FDA) | 1-6 in (2.5 in N/A); 10 to 180 F (-12 to 82 C); weak chemicals, air, oil |
| Grade SS - Natural Rubber | 1-12 in; -20 to 180 F (-29 to 82 C) |
| Grade ST - Neoprene | 1-12 in; -10 to 180 F (-23 to 82 C) |
Notes
| PTFE option | PTFE (two-piece) diaphragms also available for the most aggressive media |
|---|---|
| Temperature limit | Diaphragms at maximum temperature cannot be used at maximum pressures |
