This Normally Open (N/O) differential switch monitors the vacuum created by the draft inducer motor to ensure proper combustion air flow before allowing ignition

closed-cell foam sleeve that acts as a pre-filter and flow dispenser

It is the primary replacement seal for a wide range of industry-standard controls

Hydronic Versatility: Compatible with water or up to 50% glycol solutions

The hub on the A65825 is located on the intake side

Watts 0887294 Kit Els PW 17895 This Normally Open (N/O) differentialThe Watts 0887294 (also identified as RK009 VT) is a high performance reduced pressure zone assembly repair kit designed specifically for 1 4" and 1 2" Series 009 backflow preventers. As a veteran technician knows, maintaining the integrity of the relief valve assembly is critical for preventing back siphonage and protecting potable water systems from contamination. This total relief valve kit provides a direct factory solution for internal component