American Granby CVNL125BS 1-1/4 in. No-Lead Brass Spring Check Valve Brand: American Granby | SKU: CVNL125BS Product Overview The American Granby CVNL125BS is a 1-1/4 in. spring check valve for compatible well, pump, pressure tank, and plumbing systems that need flow to move in one intended direction. Its spring-loaded internal assembly responds as pressure changes, closing when forward flow stops to help reduce reverse movement through the line. This makes the valve useful in pump discharge piping, pressure-system service, and replacement work where a threaded brass check valve is required. The rough no-lead brass body is paired with stainless steel spring, washer, and locknut components plus a Buna-N O-ring. Female pipe-thread ends support connection to matching threaded piping, while the 200 PSI rating provides a clear selection limit. Verify media, pressure, thread size, and installation direction before ordering. Key Features: 1-1/4 in. FPT spring check valve No-lead rough brass body Stainless steel internal trim Buna-N O-ring 200 PSI pressure rating Common Uses: Well pump discharge piping Pressure tank systems Water-system service and repair Compatible gas, oil, or water lines where approved Technical Specifications: Series: CVNL Nominal Size: 1-1/4 in. End Style: FPT Pressure Rating: 200 PSI Listed Media: Gas, oil, and water Compatibility and Installation Notes: Confirm the piping size, female-thread connection, system media, operating pressure, and required flow direction before installation. FAQ: What does the spring check design do?It closes as forward flow stops to help limit reverse flow. What size is this valve?It is a 1-1/4 in. FPT model. Why Buy From Big Frog Supply? Big Frog Supply provides clear product information, helpful support, and convenient online ordering for pump and plumbing components.