this model uses NBR seals and is rated for air

OEM Compatibility: Genuine York S1-025-43201-000 ensures seamless integration with manufacturer control circuits

It features a standard 1/4" barbed connection for secure vacuum tubing attachment and utilizes high-grade electrical contacts to resist pitting and carbon buildup in high-cycle environments

This model is rated for medium temperatures up to 248°F (120°C)

Excessive static pressure (above 0

Field Controls 02724001 Control 323080-701 this model uses NBR sealsThe Field Controls 02724001, also recognized as the Model 6" MG1, is a high performance double acting barometric draft control specifically engineered for gas fired heating systems. This 6 inch draft regulator is critical for maintaining stable combustion by compensating for fluctuating atmospheric conditions, wind gusts, and stack temperatures. By accurately modulating the flow of air into the flue, the Field Controls 2724001 ensures that draft