Pressure Regulator for High Temperature | Equilibar

Pressure Regulators for High Temperature Conditions

Precision back pressure regulators with SS316 diaphragms, graphite seals, C-seal O-rings and More

Equilibar has back pressure regulators (BPRs) that deliver unmatched precision for high temperature applications such as those in the petrochemical industry and catalyst research laboratories.

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


high temperature regulator

Equilibar HT Series uses graphite seals for applications up to 450°C.

high temperature regulator

Grafoil GTA graphite gaskets are 99.9% pure and rated up to 450°C.

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