Drastar Back Pressure Regulators

Models 077 & 088: high stability for gas and liquid systems

Drastar back pressure regulators in the 077 and 088 series are designed for accurate upstream pressure control in industrial and high-purity environments. These regulators respond quickly to pressure changes, offer extremely low leakage and are built from high-grade materials such as 316L stainless steel and Hastelloy-C. This makes them ideal for specialty gases, corrosive media and critical process lines.

How a back pressure regulator works

A back pressure regulator works as a pressure-controlled relief regulator that keeps the upstream pressure constant.
When the pressure rises above the set value, the regulator opens in a controlled way to release excess pressure. As soon as the pressure stabilises, the valve closes again automatically.

This stability is essential for:

• gas systems with variable demand
• high-purity applications
• corrosive or reactive media
• analytical instrumentation
• protection of downstream components

Drastar 077 series: specifications

Drastar 088 series: specifications (high flow)

Fields of application (industry & labs)

• Specialty gas handling
• Semiconductor & high-purity gas cabinets
• Corrosive gas lines (Cl₂, HCl, NH₃, HF, etc.)
• Test and calibration systems
• Reactor feed / upstream pressure control
• Hydrogen systems & high-flow gas installations
• Analytical instrumentation (GC/MS/FTIR)