Ensure that your Pressure Cooker stays in optimum condition by purchasing official branded-spares such as this Pressure Valve. Easily fitted and constructed from high-quality, durable materials, this spare is designed especially for your pressure cooker model and will help maintain optimum cooking performance throughout the life of your appliance. Compatitle with Russell Hobbs 4 Litre Aluminium Pressure Cooker (RH001) Russell Hobbs 5.5 litre Aluminium Pressure Cooker (RH002) Russell Hobbs 7 Litre Aluminium Pressure Cooker (RH003) Tower 7 Litre Aluminium Pressure Cooker (8606138) Tower 5.5 Litre Aluminium Pressure Cooker (8612366) Tower 7 Litre Aluminium Pressure Cooker (8605782).