The Low Profile One-Way Check Valve is a precision-engineered product designed to provide optimum performance for each specified application. With its all-brass construction, this valve ensures years of dependable, trouble-free operation. Available in A: 3/8 - 18 NPTF and B: 3/4 - 14 NPTF, this valve fits most makes and models, making it a practical and versatile choice for various applications. Sold individually, this valve is a reliable and durable solution for your check valve needs.