3 Port 22mm or 28mm Motorised Zone Valve Head Can Replace Honeywell V4043H1056
Honeywell V4043H1056. Manual Lever Override. Honeywell V4073A1039. Three Port Head Fits 22 or 28mm. Save on the large cost of plumbing, and fitting a new 3 port valve; just replace the head. Valve Normally Closed.