The FNW 471AP Stainless Steel Swing Check Valve is a high-quality valve designed for industrial use. Made from durable stainless steel material, this valve meets ASME B16.34 specifications and has a WOG rating of 275 psi. With a 4" diameter and flanged end connection type, this valve is suitable for various applications requiring reliable and efficient fluid control. The swing check valve design allows for easy operation and maintenance, making it a practical choice for businesses in need of a durable and dependable valve solution.