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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
This 120V AC M-series rotary control offers a compact profile that fits into tight control panels where standard universal switches often fail to seat properly
meeting standard NEMA 1 enclosure requirements
preventing hunting or floodback issues
preventing equipment stalling
Designed for reliable pressure monitoring and system safety
Sensus 139-16-021-01 Black Spring This 120V AC M-series rotaryThe Sensus 139 16 021 01 Black Spring is a critical calibration component engineered specifically for Sensus Model 143 gas service regulators. In field applications, this regulator adjustment spring provides the necessary tension to maintain a stable 2 6 PSI outlet pressure range, ensuring the diaphragm responds accurately to downstream demand. For technicians performing routine maintenance or pressure conversions, using the correct color coded spring
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