High Temperature Upgrades for Standard Equilibar BPRs
Many of Equilibar’s standard Research Series BPRs can be upgraded with SS316 diaphragms and Kalrez® O-rings to push the operating temperature range to 300°C/ 527°F. The use of a metal diaphragm also increases the pressure range up to 10,000 psig / 689 bar(g). While the standard PTFE/Glass composite diaphragms can be used for conditions up to 232°C (450°F) at low pressures, the mechanical stress derating for PTFE at elevated temperatures makes the SS316 diaphragm a more practical choice in most high temperature applications. Diaphragms made of Hastelloy C276 are also available for some scenarios.
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Equilibar HT Series Extends Temperature to 450°C
Equilibar’s HT Series back pressure regulators utilize a graphite seal for temperatures to 450°C and pressures to 5000 psig / 345 bar(g). The Grafoil GTA seal is nuclear grade purity (99.9% graphite). HT model specifications are shown in the table below.
| Series Name | Port Sizes | Max Pressure psig/bar(g) | Min Cv | Max Cv | Advantages |
|---|---|---|---|---|---|
| HT High Temp | 1/8″ 1/4″ | To 5000psig / 345 bar(g) | 1E-5 | 0.07 | High Temperature applications |
| HTF High Temp & Flow | To 5000 psig / 345 bar(g) | 0.35 |
Metal C-rings and Inconel hardware for operating at 648°C
Equilibar High Temperature back pressure regulators can also be designed using silver coated Inconel C-rings and Inconel bolts. Using these Metal C-rings in combination with full metal diaphragms and Inconel bolts extends the capability of the back pressure regulator to operate at temperatures up to 648°C.
Contact our engineers for more information or to help with your specific application.
Watch our video for further details about our high temperature back pressure regulator options
Kalrez® is a registered trademark of DuPont Performance Elastomers
Equilibar HT Series uses graphite seals for applications up to 450°C.
