Fairchild Pneumatic Positive Bias Relay

$353.82 / EA
  • Product Type: Biasing Relay
  • Manufacturer: Fairchild
  • Product Family: Model 85D
Fairchild Model 85D Pneumatic Positive Bias Relay, 1/8" FPT Pipe, 1 to 100 PSIG, Aluminum, Buna-N and Dacron Diaphragm, Tamperproof, 2-Stage Pneumatic Positive Bias Relay.

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Product Description

Pneumatic Positive Bias Relay; Item Biasing Relay; Type 2-Stage, Tamperproof; Overall Dimension 1-3/4 Inch Width x 1-3/4 Inch Depth x 5 Inch Height; Pipe Size 1/8 Inch Female Threaded; Gauge Port Size 1/8 Inch Threaded; Material Aluminum; Pressure Range 1 to 100 PSIG; Supply Pressure 250 PSIG (Maximum); Signal/Output Pressure 150 PSIG (Maximum); Supply Pressure Effect 0.2 PSIG; Flow Capacity 14 SCFM at 100 PSIG; Exhaust Capacity 2.5 SCFM; Air Consumption 0.1 SCFM; Ambient Temperature -40 to 200 Deg F; Includes Aluminum/Stainless Steel/Brass Trim, Buna-N and Dacron Diaphragm, Pilot Control; Applicable Standard ISO 9001, FM


Two Stage Pilot Operation Allows Precise Control of Setpoints; Low Air Consumption Preserves Air and Other Costly Gases; Compact Size Permits Installation where Space is Limited; Allows Precise Control of Setpoints; Allows Use in Applications Requiring High Flow and/or Fast Response; Preserves Air and Other Costly Gases; Permits Installation where Space is Limited; Versatility Makes it Easy to Design into New and Existing Application

Series/Model Info

The Model 85D Multi-Stage Biasing Relay is a precision control combining the sensitivity of a precision pressure regulator with positive biasing capability. This compact, pilot-operated device offers unusually high output capacity with minimal air consumption, while providing excellent protection against supply or output pressure variations. The versatile Model 85D is recommended for use in systems requiring precision pressure maintenance and instrument biasing, in dead end service and instrument panel supply applications.