Plastic material: This split piston valve is made of high-quality plastic. Robust and durable. Replace your old pool accessory or upgrade your piston valve system to improve water circulation and make hose and pump changes easier. Elastic rubber: The rubber on this hose piston is elastic and fits tightly around the hose to form a seal and prevent leakage. Convenient and efficient: One-step installation. The filter pump or filter core can be replaced at any time, or you can upgrade to a more powerful filter. Effectively and conveniently shut off your pool. Versatile: This pool hose piston valve is used for above-ground saltwater pool systems. It is the perfect solution for you. Compatibility: Adapter for above-ground pool hose. 3.8 cm T-coupling. Using this component helps keep your pool safe and functioning correctly. Specifications: Product type: Split hose piston valve. Material: Plastic. Approximate weight: 152 g. Product dimensions: approximately 3.8 x 18 cm. Contents: 1 split hose piston valve. 3 washers.