What is the difference between the K-370 and the D25519

Corrosion-Resistant Construction: Heavy-duty rough bronze body resists scaling and degradation in harsh hydronic environments

The configuration menu allows for easy keypad selection to set the reversing valve to energize in either heating (B) or cooling (O) modes to match the specific condensing unit

Durable Construction: Heavy-duty brass body with copper stubs provides superior corrosion resistance and high-pressure integrity

and WMJ series equipment

Modine 5H0735910008 Pressure Switch 30067439-890 What is the difference betweenThe Modine 5H0735910008 Pressure Switch is a critical safety component designed for precise combustion air monitoring in high efficiency heating systems. This SPST furnace pressure switch is factory calibrated to a . 8" WC set point, ensuring reliable performance by verifying proper inducer motor operation and venting pressure before allowing the ignition sequence to proceed. As the 5H73591 8 direct replacement, this OEM component maintains system