Siemens Building Technology 331-4811 Actuator 323269-701 The first two digits represent

The first two digits represent the manufacturing week

It features external pressure equalization via a 1/4-inch flare connection

Simplified Installation: The no-fitting configuration allows for cost-effective restoration of sight glass functionality using existing system fittings

The Heil Quaker ICP 611891 Relay is a high-performance combustion air relay specifically engineered for International Comfort Products (ICP) heating systems

Siemens Building Technology 331-4811 Actuator 323269-701 The first two digits representFor veteran technicians managing air handler units and mixing boxes, the Siemens 331 4811 represents the industry standard for pneumatic reliability. This No. 3 Pneumatic Damper Actuator is engineered with a rugged, all metal body designed to withstand the harsh environments of mechanical rooms. Operating on a nominal 8 to 13 psi spring range, this unit provides precise, gradual, or positive actuation of HVAC dampers and air valves. The 331 4811