Zurn 2-850TXL Second Shutoff Valve Test Cock

Product Description

The ZURN 2-850TXL is a second shutoff valve tapped for a test cock, designed for use in backflow prevention assemblies. This valve serves as the downstream shutoff in a reduced-pressure zone or double-check valve assembly, allowing technicians to isolate the assembly during annual testing and servicing. The tapped port accepts a standard test cock fitting, giving certified backflow testers direct access to system pressure points without disassembling the line. Licensed plumbers and backflow prevention specialists are the primary installers of this component.

This shutoff valve is used in commercial and residential plumbing systems where backflow prevention assemblies require periodic certification testing. It is positioned as the second shutoff in a backflow preventer assembly, upstream of the downstream shutoff station. The tapped test cock port makes this valve compatible with standard backflow test kit connections used during annual certification procedures required by most local water authorities.

Key Features

• Tapped port accommodates a standard test cock fitting for backflow assembly testing
• Functions as the second shutoff valve in a backflow prevention assembly
• Designed for use with the 975XL2 backflow preventer series
• Supports isolation of the assembly without interrupting the full system

Compatibility

Designed as a replacement second shutoff valve for use with the ZURN 975XL2 backflow prevention assembly series.

Installation Notes

Installation should be performed by a licensed plumber or certified backflow prevention technician in accordance with local plumbing codes and IPC requirements. Shut off the water supply and depressurize the line before removing or installing any backflow assembly component. Verify that the test cock port is properly plugged or fitted before returning the assembly to service. Do not overtighten fittings at the tapped port, as this can damage the threads and compromise the test connection.

Technical Specifications

• Application: Second shutoff valve tapped for test cock
• Compatible Assembly: 975XL2 backflow preventer

Standard Information

• Brand: ZURN
• Manufacturer Part Number: 2-850TXL