American Granby lf5100-11/4 Bronze Check Valve 1-1/4 in

Product Description

The AMERICAN GRANBY lf5100-11/4 is a lead-free, cast silicon bronze poppet-style check valve designed to prevent backflow in water well system piping. Rated at 400 PSI WOG (water, oil, gas), it delivers reliable one-directional flow control in demanding service conditions. The valve ships complete with a stainless steel spring, washer, and lock nut, making it a ready-to-install assembly. Its 1-1/4 inch nominal size with female-threaded connections on both ends suits standard threaded pipe installations. Licensed plumbers and water well contractors are the primary installers of this valve in residential and light commercial well pump systems.

The lf5100-11/4 is built for water well system applications where backflow prevention and pressure integrity are critical. The lead-free silicon bronze body meets drinking water safety standards, making it appropriate for potable water service. The Buna-N seal material provides durable, low-maintenance seating under repeated cycling. The poppet design with integral spring ensures positive closure when flow stops or reverses, protecting pumps and pressure tanks from backflow damage.

Key Features

• Lead-free cast silicon bronze body rated for potable water service
• 400 PSI WOG pressure rating for high-pressure well system installations
• Poppet-type design with stainless steel spring for positive, reliable closure
• Buna-N seal for durable seating and low-maintenance operation
• Female threaded x female threaded end connections for standard pipe thread fitment
• Ships with spring, washer, and lock nut included — no separate hardware required
• Made in the U.S.A.

Compatibility

Designed for use in water well system piping with 1-1/4 inch female-threaded connections. Part of the LF5100 Series silicon bronze lead-free check valve line by AMERICAN GRANBY.

Installation Notes

Installation should be performed by a licensed plumber or certified well contractor in accordance with applicable local plumbing codes and IPC guidelines. Shut off and depressurize the system completely before removing any existing valve or fitting. Apply appropriate thread sealant or PTFE tape to male pipe threads before threading into the valve body — do not over-torque threaded connections on bronze fittings. Verify flow direction is correct before returning the system to service.

Technical Specifications

• Valve Type: Poppet Check Valve
• Nominal Size: 1-1/4 inches
• End Connection: Female Threaded x Female Threaded
• Body Material: Cast Silicon Bronze
• Spring Material: Stainless Steel
• Seal Material: Buna-N
• Pressure Rating: 400 psi WOG
• Inclusions: Spring, Washer, Lock Nut
• Application: Water Well System
• Lead Free: Yes
• Packaging Quantity: 36 per Carton
• Country of Origin: USA

Standard Information

• Brand: AMERICAN GRANBY
• Manufacturer Part Number: lf5100-11/4