The Henny Penny 21800 check valve is designed for compatible commercial open fryer equipment. This valve has a 3/4-inch connection and helps control fluid flow within the equipment system. It may require replacement if the existing valve becomes worn, damaged, or fails to function correctly. Using the correct replacement component helps maintain proper system operation and supports ro... https://partsfe.com/valve-34-check-for-henny-penny-part-21800/1-21800.html