Emerson 67C Data Sheet
Contents
1. Smart Bleed Airset An airset that is smart enough to know when fail safe conditions must be executed Type 67CFR with Smart Bleed Mounted to Type 667 Actuator Lower Operating Costs Ensuring Actuator Failure Mode Any airset piped directly to an actuator or to devices that consume air intermittently can lead to a problem of trapping pressure in the actuator if a fixed bleed is not installed The trapped pressure locks the actuator in last position Since regulators respond to changes in downstream pressure not inlet pressure the regulator remains locked up when supply pressure is lost A means to exhaust the trapped pressure is required Optimized Performance Fisher Smart Bleed Airset allows downstream pressure in an actuator or other instrument to exhaust if supply pressure is lost In turn allowing the actuator to fail in the desired position The use of the Smart Bleed eliminates the need for a fixed bleed and should be used when supplying air to a dead end system Lower operating costs The cost to power pneumatic instruments in chemical hydrocarbon and process industries is continuing to increase and along with it the need to minimize leakage wherever possible Intensive laboratory testing shows the Type 67CFR internal relief valve has tight shutoff Combined with the benefits of the Smart Bleed continuous steady state air consumption is eliminated Plant resources are conserved and the cost to power pneu2. matic and digital instruments is reduced EMERSON INLET PRESSURE 1 OUTLET PRESSURE Co ATMOSPHERIC PRESSURE Type 67CFR Smart Bleed Schematic Best in Class Design Best in class design The Smart Bleed Airset incorporates the use of a differential outlet pressure the check valve opens and exhausts the check valve between the inlet and outlet pressure cavities downstream volume The design provides for consistent and of the Type 67CFR During normal operation the check repeatable operation valve remains closed When inlet pressure is less than Industrial Regulators Emerson Process Management Regulator Technologies Inc North America Asia Pacific Europe Middle East and Africa McKinney Texas 75070 USA Shanghai 201206 China Bologna 40013 Italy Dubai United Arab Emirates Tel 1 800 558 5853 Tel 86 21 2892 9000 Tel 39 051 419 0611 Tel 011 971 4811 8100 Outside U S 1 972 548 3574 For further information visit www fisherregulators com D350919X012 2009 2014 Emerson Process Management Regulator Technologies Inc All rights reserved Printed in the U S A 01 14 Fisher Emerson Process Management and the Emerson Process Management design are marks of one of the Emerson Process Management group of companies All other marks are the property of their respective owners EMERSON
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