This 4 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of polluted water from entering into the potable water system. It is ideal for protection in continuous pressure piping applications and cross-connections identified as non-health hazards.

Construction & Design

• Features a fused epoxy coated cast iron body and FDA epoxy coated quarter-turn ball valve shutoffs.
• The modular check design allows for easy maintenance with a center stem guide.
• Captured spring assemblies are accessible through a bolted cover plate for safety.
• Utilizes ArmorTek® coating technology, a patented 3-part advanced epoxy system, to resist microbial-induced corrosion (MIC) and protect exposed metal substrate.
• Lead Free* construction ensures the wetted surface contains less than 0.25% of lead by weight.

Smart & Connected Features

• Integrated pressure-sensing test cocks (No. 2, No. 3, No. 4) measure pressure fluctuations at three locations.
• An add-on monitoring connection kit (sold separately) is required to activate sensors and transmit data to a Building Management System (BMS/BAS).
• Enables monitoring and assessment of backflow assembly performance and the water supply system.
• Provides data to help drive the scheduling of maintenance and repair, offering a solution for monitoring assembly performance between code testing.

Key Features

• Replaceable stainless steel seats.
• Achieves maximum flow at low pressure drop.
• No special tools required for servicing.
• Approved for vertical flow up installation (for 4 inch to 10 inch with OSY gate valves only).

Installation requirements vary by local authority. Always inquire with governing authorities for specific local installation requirements.