Lochinvar & A.O. Smith 100187879 Disk 320074-702 This unit is designed to

This unit is designed to interface seamlessly with existing pneumatic control systems

simplifying drop-in replacements for existing piping configurations

This 250-foot roll of 3/8" OD plenum rated pneumatic tubing is manufactured from a flame-retardant

For systems exceeding 2 PSI nominal pressure

Common Questions & Technical Support What are the signs of a cracked heat exchanger in this model

Lochinvar & A.O. Smith 100187879 Disk 320074-702 This unit is designed toFor veteran technicians servicing high output commercial boilers and water heaters, the Lochinvar & A. O. Smith 100187879 Pyrolite Insulation Disk is a critical OEM component for maintaining thermal integrity. Manufactured from specialized Pyrolite ceramic fiber, this 3. 34 lb high density disk is engineered for high temperature HVAC systems where standard insulation fails. It provides superior thermal conductivity resistance to minimize heat loss in