Diaphragm Seal - Flanged Offline Non-Metallic Diaphragm Seals
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FLANGED OFFLINE NON-METALLIC DIAPHRAGM SEALS
Flanged Offline Non-Metallic Diaphragm Seals are designed with an upper and lower housing bolted together with a Teflon or Viton diaphragm bonded to the upper housing. This design allows for the lower housing to be removed for easy cleanout of the seal chamber while still maintaining the system fill. The Teflon and Viton diaphragm are ideal for protecting the pressure instrument from corrosive process fluid.
- Removable Lower Housing Design for Easy Cleanout
- Wide Variety of Plastic and Metallic Lower Housing Materials
- Highly Sensitive and Corrosion Resistant Diaphragm
- High Displacement Diaphragms Ideal for Mechanical Differential Pressure Gauges and Low Pressure Gauges
Specifications
Construction Materials
Diaphragm (Wetted): Teflon Virgin PTFE or Viton A Lower Housing (Wetted): 316/316L SS, Hast C-276, Monel A400, Alloy 20, Hast B, or Others Gasket: Teflon Durlon 9600 or Viton A Upper Housing (Non-wetted): 316/316L SS or Carbon Steel Nickel Plated
Process Temperature Limits
| Lower Housing | Diaphragm | Max. Temp. |
| Metallic Lower | Teflon | 450ºF |
| Viton | 300ºF | |
| Non-Metallic Lower | Teflon | 140ºF |
| Viton | 140°F |
Ambient Temperature Limits
Determined by the Pressure Instrument
Minimum Recommended Span
| T5 | T6 | V5 | |
| 2.5” & 3.5” Gauges | 15 psi | 60” H2O | 15” H2O |
| 4”, 4.5”, & 6” Gauges | 15 psi | 60” H2O | 15” H2O |
| *Transmitter (Gauge Pressure) | 15 psi | 5 psi | 30” H2O |
| *Transmitter (Differential Pressure) | n/a | 200” H2Od | 60” H2Od |
| Differential Pressure Gauge | n/a | 300” H2Od | 100” H2Od |
Maximum Working Pressure
Determined by flange.
Data Sheet
Installation Instructions
Download Installation Instructions: