Crane 125431gv Gate Valve 1-1/4 in Fnpt Bronze 300 Psi

Product Description

The CRANE 125431gv is a Model 431 rising stem, full-port gate valve rated for 300 PSI cold water pressure (CWP) non-shock service at Class 150. The bronze body and bonnet conform to ASTM B62 (UNS C83600), providing reliable corrosion resistance in water, steam, and general industrial fluid applications. The rising stem design gives a clear visual indication of valve position — open or closed — which is important in commercial plumbing and mechanical room installations. A malleable iron handwheel operates the valve, and a full-port bore minimizes flow restriction. Flow coefficient (Cv) is rated at 90, supporting high-flow system designs. This valve is installed by licensed plumbers and pipefitters.

The CRANE 125431gv is suited for residential and commercial plumbing systems, hydronic heating distribution lines, industrial fluid lines, and general utility shutoff applications where a reliable, manually operated isolation valve is required. The 1-1/4 inch FNPT connections make it compatible with standard threaded pipe systems conforming to ANSI B1.20.1. It is appropriate for use in mechanical rooms, boiler rooms, and process piping where periodic full shutoff is needed. This valve is not rated for use on gas lines or in applications requiring a lead-free compliant valve.

Key Features

• Rising stem design provides clear visual open/closed indication
• Full-port bore with Cv of 90 for minimal pressure drop
• Bronze body, bonnet, stem, and wedge disc (ASTM B62, ASTM B505)
• 300 PSI CWP non-shock pressure rating at Class 150
• FNPT connections conform to ANSI B1.20.1 threading standard
• MSS-SP-80 Type 2 compliant construction

Compatibility

Designed as an OEM-style Model 431 series Class 150 bronze threaded gate valve for 1-1/4 inch FNPT threaded pipe systems conforming to ANSI B1.20.1 and MSS-SP-80 Type 2 standards.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with local plumbing codes and IPC requirements. Depressurize and drain the system fully before removing or installing any valve. Apply thread sealant or PTFE tape to male threads per standard practice; do not overtighten, as bronze fittings can be damaged by excessive torque. Verify that the system operating pressure does not exceed the 300 PSI CWP non-shock rating of this valve.

Technical Specifications

• Pressure Rating: 300 PSI (CWP) Non-Shock
• Pressure Class: Class 150
• Nominal Size: 1-1/4 inches
• Connection Type: FNPT
• Flow Coefficient (Cv): 90
• Body Material: Bronze (ASTM B62, UNS C83600)
• Stem Material: Bronze (ASTM B505, UNS C83600)
• Trim Material: Bronze Wedge Disc (UNS C83600)
• Gland Material: Brass (ASTM BSEN12164, CW614N)
• Handle Material: Malleable Iron (ASTM A197, UNS F22000)
• Seat Material: Bronze
• Operator Type: Handwheel
• Valve Type: Rising Stem, Full-Port
• Industry Standards: ANSI B1.20.1, MSS-SP-80 Type 2
• Width: 2.77 inches
• Inlet Center To Top Of Handle: 8.62 inches
• Handwheel Diameter: 3.06 inches
• Weight: 3.3 pounds
• Lead Free: No

Standard Information

• Brand: CRANE
• Manufacturer Part Number: 125431gv