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.