Edgetec air control valve - Reactive - Scalloped E1250-ch. These have been discontinued and superseded by the Smooth version listed here. <-- Click Here for Direct Replacement.
Cap & Internal rotor can be easily replaced by popping them off with a small flat-bladed screwdriver. Generally mounted with a locking nut on the underside of the bath shell. See photos.
- Diameter: 45mm,
- Hole size required: 25mm
- 1 x 3/8"/9mmhose connection that run around spa jets in a ring main