meaning it stays in the open position upon loss of pneumatic control air

the ASCO 8221G3 is specifically rated for water service

This genuine OEM flame rod replacement is engineered for precision rectification signal monitoring within the combustion chamber

use a multimeter to check the sensor's resistance against the manufacturer’s 10k-ohm (or applicable) thermistor chart

the circuit closes to resume normal operations

ASCO V710KBSV22 Valve Body 320735-701 meaning it stays in theThe ASCO V710KBSV22 Valve Body is a premier 2 way normally closed gas valve designed for high performance safety shutoff in commercial and industrial systems. Engineered with a durable die cast aluminum body, this 2. 5 inch unit features an optimized internal geometry that achieves a high 120 Cv flow factor, supporting capacities up to 6,470 cfh. This specific configuration includes the V22 valve seal overtravel trim, also known as Proof of Closure