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Fairchild 20822, Volume Booster, Model 20, 1:2 Ratio

Volume Booster, Model 20, 1:2 Ratio
Item #: 20822

Product Info

Fairchild

Model 20 Pneumatic Precision Volume Booster, 1:2 Ratio, 1/4" NPT, 1/2" WC Sensitivity, 0.15 psi Accuracy Features: • Flow capacity of 45 SCFM (76.5 m³/HR) • Ten available pressure ratios • The Model 20 Pneumatic High Capacity Volume Booster uses a pneumatic input signal to accurately control output pressure • A balanced Supply Valve minimizes the effects of supply pressure variation • Aspirator Tube compensates downstream pressure droop under flowing conditions • Optional Adjustable By-Pass Needle Valve option includes bubble tight exhaust valve allows tuning for optimum dynamic response 1:1 ratio only) and cycle free operation with valve positioners • Optional Fixed Negative Bias for pneumatic signal devices that cannot be adjusted to zero signal pressure • A separate Control Chamber isolates the diaphragm from the main flow to eliminate hunting and buzzing • Unit construction allows servicing without removal • Mounting Bracket available • Canadian Registration Number (CRN) Certification for all territories and provinces • Hazardous Locations - Acceptable for use in Zones 1 and 2 for gas atmosphere; Groups IIA and IIB and Zones 21 and 22 for dust atmospheres Benefits • Fast responsive operation. • Easily suits your downstream pressure requirements. • Allows tuning for optimum dynamic response (1:1 ratio only) and cycle free operation with Valve Positioners. • Facilitates use with pneumatic signal devices that cannot be adjusted to zero signal pressure • Eliminates hunting and buzzing • Allows servicing without removal • Easy installation in the field • Suitable for use in all Canadian territories and provinces

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