This Safety Valve is Suitable for Aluminium Deluxe, Deluxe+, and Alpha, Nakshatra Pressure Cookers Note: Not Suitable for Popular, Supreme, Ultimate and Regular Cookers including all Regular Stainless Steel Pressure Cookers. (If you have any question please write to us before purchase) Suitable for Prestige Pressure Cooker Genuine Product from Prestige Well Designed Made in India