BS 4151:1967
Current
Date published:
Method of evaluating pneumatic valve positioners with input signal of 3 to 15 lbf/in<sup>2</sup> (gauge)
Specifies tests to determine performance of pneumatic valve positioners with 3 to 15 lbf/in2 (gauge) input signal. Method of evaluation specifies use of a valve operator of a spring-opposed or double-acting diaphragm or piston type in order to allow a ready comparison to be made between different types of positioner.
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BS 4151:1967
Get this standard
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