Rotork Positive and Negative Bias Relay (M14)
M14

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Designed for applications that require an output pressure that is the sum of a controlled input signal plus or minus a fixed bias, Fairchild's Model 14 Biasing Pneumatic Relay provides versatility in its ability to provide either positive or negative biasing in a single unit. The output of the Model 14 relay is the sum of the spring bias, set with the Range Screw, plus a pneumatic input signal. (Po = Ps + K); where Po is output pressure, Ps is signal pressure, and K is the combined spring constant.
Features:
Control sensitivity of 1/2" water column
Balanced Supply Valve
Aspirator Tube design
Separate Control Chamber
Mounting Bracket available
Canadian Registration Number (CRN) certification
Benefits:
Allows use in precision applications
Minimizes the effects of supply pressure variation
Minimizes downstream pressure drop under flow conditions
Isolates the diaphragm from the main flow to eliminate hunting and buzzing
Easy to install in the field
Certification for use in all Canadian territories and provinces