Dual Check Backflow Preventer

This Standard covers plumbing supply fittings and accessories located between the supply stop and the terminal fitting, including: wall-mounted showering systems; bath and shower supply fittings; bidet supply fittings; clothes washer supply fittings; commercial pre-rinse spray valves; drinking fountain supply fittings; humidifier supply stops; kitchen, sink, and lavatory supply fittings; laundry tub supply fittings; lawn and sediment faucets; low-pressure water dispensers; metering and self-closing supply fittings; showerheads, hand-held showers, and body sprays; and supply stops.

This Standard addresses functional performance and physical characteristics of devices that provide backflow protection consistent with the level of risk associated with the application. The Standard establishes performance criteria and provides the test methods to prove compliance. It is applicable to all plumbing fixture fittings with outlets not protected by an air gap.

This Canadian Standard (harmonized with ASME A112.18.1) has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

The California State Health and Safety Code Section 116875 requires that no person shall use any pipe, pipe or plumbing fitting or fixture, or solder or flux, that is not lead-free in the installation or repair of any public water system or any plumbing in a facility providing for human consumption except when necessary for the repair of leaded joint of cast iron pipe.

In order to obtain product acceptance in Massachusetts, products must be tested using industry accepted standards to ensure they are safe and work as designed for public use. The laboratories which perform such tests must be certified to meet industry-based guidelines to ensure appropriate testing.

NSF/ANSI 61 addresses the human health effects of drinking water system components. This performance-based standard evaluates the amount of contaminants that leach from the products into potable drinking water. The origin for this standard was lead reduction/ removal. Any lead that elutes into the water at over 0.25% fails this standard.

NSF/ANSI 372 establishes a standardized methodology for the determination and verification of product compliance to minimize lead contaminants. This standard is consistent with the United States Safe Drinking Water Act (SDWA) and its lead-free plumbing requirements, as well as the requirements of individual U.S. states such as California.

VersaCheck dual check backflow preventers have been reviewed and determined to comply with chapters SPS 382 through 384, Wisconsin Administrative Code, and Chapters 145 and 160, Wisconsin Statutes. The Department hereby issues an alternate approval to s. SPS 382.41 based on the Wisconsin Statutes and the Wisconsin Administrative Code.