Pentair
Corresponds with 5 in the diagram above.
Only works for the following models:
1. Combination Gas Control Valve Kit - 42001-0051S
2. 3/4 in. Union - 38404-4097S
5. Air Blower Kit – Natural Gas Units (Models 175NA) - 77707-0250
5. Air Blower Kit - Natural Gas Units (Models 200NA) - 77707-0251
5. Air Blower Kit - Natural Gas Units (Models 250NA) - 460743