Miniature Precision Air Pressure Regulator
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Type 90 Miniature Precision Air Pressure Regulator Accurate pressure regulation in a compact, lightweight package The Type 90 is a miniature precision air pressure regulator. This pressure regulator provides the highest level of regulation accuracy and repeatability available in a compact, lightweight housing. A force balanced pilot control maintains output pressure to within 0.05 psig (3.44 millibar) with minimal drift over time. The Type 90 is ideal for applications that require exact pressure control and substantial flow capacity under variable operating conditions and limited space. •High resolution adjustment of set pressure •Precision Control Highly accurate air pressure regulation in a small package •Pressure ranges up to 120 psig (8 BAR) •Compact & Lightweight •Available in NPT and BSP porting •Two gauge ports and reversible bracket allow front or back mounting Specifications Flow Capacity Exhaust Capacity Supply pressure sensitivity 0.5 psig (.034 BAR) for a 100 psig (6.9 BAR) change. shown at actual size 6.0 scfh (170 Nl/hr) maximum at 150 psig (10 BAR) supply Approximate size (inches) 1.38 x 1.38 x 3.88 ±.3% of span Approximate size (mm) Temperature limits Output Pressure Ranges Port Size NPT/BSP 0.7-30 psig (0.05-2 BAR) 1.4-60 psig (0.1-4 BAR) 1.4-120 psig (0.1-8 BAR) Materials of Construction Housing Elastomers Trim Diecast aluminum alloy, chromate and epoxy paint Nitrile Additional materials Brass, aluminum, stainless steel, zinc plated steel Zinc plated steel OUTPUT PRESSURE FLOW CURVES Range 1.4-120 psig (0.10-8 BAR); 150 psig (10 BAR) supply Range 1.4-120 psig (0.10-8 BAR); 100 psig (6.9 BAR) supply Range 1.4-60 psig (0.10-4 BAR); 100 psig (6.9 BAR) supply Range 0.70-30 psig (0.05-2 BAR); 100 psig (6.9 BAR) supply

OPTIONAL BRACKET VENT BLEED Manifold Mount Type 90 Ordering Information Theory of Operation Supply air is introduced to the inlet port, air flows through the supply side orifice and on top of the control diaphragm. That air then flows up through the housing nozzle and escapes out the housing vent. When the knob is adjusted to a setpoint, the range spring exerts a downward force against the signal diaphragm assembly. This force is transmitted to the flapper (ball), restricting airflow through the housing nozzle and creating backpressure against the control diaphragm. The backpressure will...