Cone-shaped Dega, Onga, Quiptron air relief valve for older filters. Found on older Gray, Beige or Black cartridge filters. They have a brass thread of approx 9mm. Measures approx 35mm overall length. Part number one in diagram.
Note that often the lid itself is full of age and stress cracks. In this case we recommend replacing the entire lid with this later version.
- Dega: 50, 75, 100, 150
- Quiptron: C232, C464, C696, C929,C1500 Filters