THREADED FLOW THRU DIAPHRAGM SEAL
Reotemp’s Threaded Flow Thru Diaphragm Seal is ideal for installation in applications requiring little interruption to process flow. The W540 is available in threaded connections up to 2” NPT.
Construction Materials
Diaphragm: 316SS, Hast C-276, Tantalum, Monel, or others
Lower Housing: 316SS, Hast C-276, Monel, or others
Gasket: PTFE, Grafoil, or Klinger
Upper Housing: 316SS Standard
Process Temperature Limits
| Metallic Lower | Limit (°F) |
| PTFE Gasket | -110/350° |
| Klinger Gasket | -110/450° |
| Grafoil Gasket | -40/600° |
| EPDM | 300° |
| Natural Rubber | 212° |
Ambient Temperature Limits
Determined by the Pressure Instrument
Minimum Recommended Span
| W540 | |
| 2.5” & 3.5” Gauges | 15 psi |
| 4”, 4.5”, & 6” Gauges | 30 psi |
| Transmitter (Gauge Pressure) | 150” H2O |
| Transmitter (Differential Pressure) | 300” H2O |
| Differential Pressure Gauge (D40/42 Only) | N/A |
Maximum Working Pressure at 100°F
| Bolts | Grade 5 | Grade 8 | 18/8SS | 316SS | |
| Metallic Lower | W540 | 2,500 psi | 2,500 psi | 1,500 psi | 1,500 psi |
Weight
Metallic Lower: 4.5lbs.
Download Installation Instructions: