the kit contains the diaphragm or piston assembly

Structured with a durable brass body and a calibrated eutectic alloy core

The Williams P200900 provides a specific thickness and seal density required for the combustion chamber's pressure dynamics

Common Questions & Technical Support How do you adjust the pressure set point

Nordyne 669064R Replacement Filter 318172-701 the kit contains the diaphragmThe Nordyne 669064R Replacement Filter is a direct, upgraded OEM factory replacement for the legacy 669064 part number. Engineered for high volume airflow in Intertherm, Miller, and Revolv M1 RG series furnaces, this large hogs hair filter utilizes a dense electrostatic natural fiber blend to capture high particulate loads without creating excessive static pressure. For a technician, this means maintaining the correct CFM output across the evaporator