replacing the internal disc and packing is a cost-effective way to restore HVAC system efficiency

In high-traffic commercial environments

Starting Performance: Provides reliable management of start capacitors

System Safety: Prevents furnace operation during venting obstructions or blower failure

the 103N0011 acts as a reliable compressor start relay

Sensus 143-08-021-00 Spring replacing the internal disc andThe Sensus 143 08 021 00 Red Spring is a high precision component engineered specifically for Sensus 143 series service regulators. As a veteran grade gas regulator spring, it maintains critical outlet pressure control within the 3. 5" to 6. 35" water column (WC) range. Designed for RPC applications, this red coded spring provides the mechanical force necessary for consistent diaphragm modulation in residential and light commercial meter sets. The