Coating: ArmorTek® powder coating for corrosion resistance
Maximum Working Pressure: 175 psi
Integrated pressure-sensing IoT test cocks
Modular design for easy maintenance
Approved for vertical flow up installation
Valves: NRS resilient seated gate
Description
This 10 inch Lead Free Double Check Valve Backflow Preventer Assembly, Model LF709-NRS-S-FDA-IOT, prevents the reverse flow of polluted water in non-health hazard cross-connections. Featuring a robust epoxy coated cast iron body and ArmorTek® coating, it offers superior corrosion resistance. Integrated pressure-sensing test cocks enable performance monitoring with an add-on connection kit, allowing data transmission to building management systems. Its modular design and NRS resilient seated gate valves simplify maintenance. Approved for vertical flow, this assembly ensures reliable backflow protection. Item number 88003435.
Help Me Connect
Monitoring Connection
The Series LF709 assembly includes integrated pressure sensors at test cocks No. 2, No. 3, and No. 4 for measuring pressure fluctuations.
To activate these sensors and collect data, an add-on monitoring connection kit (not included) is required.
This connection kit communicates via a wired serial (RS-485) interface.
It is compatible with most Building Management Systems (BMS) and Building Automation Systems (BAS) for integrated monitoring solutions.
This 10 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 continuous pressure piping applications and cross-connections identified as non-health hazards.
Features
Lead Free* construction complies with Lead Free installation requirements (wetted surface less than 0.25% lead)
Modular check design concept facilitates complete maintenance and assembly by retaining the spring load
Integrated pressure-sensing IoT test cocks measure pressure fluctuations at three locations
Sensors are activated with an add-on monitoring connection kit (BMS/BAS only) for data collection and transmission to building management systems
Replaceable stainless steel seats
Maximum flow at low pressure drop
ArmorTek® coating technology resists corrosion of internals (microbial-induced corrosion and exposed metal substrate)
No special tools required for servicing
Captured spring assemblies for safety
Approved for vertical flow up installation
Construction & Materials
Body constructed from fused epoxy coated cast iron
Equipped with NRS resilient seated gate valves
Includes an FDA epoxy coated strainer
Test cocks for maintenance and monitoring
Smart & Connected Technology
The Series LF709 assembly features standard Smart and Connected technology with NRS gate valves, Model IOT. Sensors integrated at test cocks No. 2, No. 3, and No. 4 measure pressure fluctuations. This technology enables monitoring and assessment of backflow assembly performance and the water supply system when an add-on connection kit is used.
Specifications
Check Valve Body: Epoxy coated Cast Iron
Seats: Stainless Steel
Coating: ArmorTek® powder coating (applied to internal and external surfaces)
USC Manual for Cross-Connection Control, 8th Edition
Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California
NSF Certified to NSF/ANSI 61-G
FM Approved (4" to 10" vertical "flow up" with OSY gate valves only)
FAQs
What is the primary function of the 10 LF709-NRS-S-FDA-IOT backflow preventer?
This 10 inch Lead Free Double Check Valve Backflow Preventer Assembly is designed to prevent polluted water from reversing flow into the potable water supply. It is used in continuous pressure piping applications and non-health hazard cross-connections.
What does "Lead Free" mean for this product?
The term "Lead Free" indicates that the wetted surface of this product, which comes into contact with consumable water, contains less than 0.25% of lead by weight. This complies with Lead Free installation requirements.
How does the ArmorTek® coating technology benefit this valve?
The ArmorTek® coating is a patented three-part advanced epoxy system applied to the iron components of the backflow preventer. It is engineered to reduce both microbial-induced corrosion (MIC) and protect exposed metal substrate from general corrosion.
Are there monitoring capabilities for this backflow preventer?
Yes, this assembly features Smart and Connected technology with integrated pressure-sensing IoT test cocks (No. 2, 3, and 4) to measure pressure fluctuations. An add-on monitoring connection kit (sold separately) is required to activate these sensors and transmit data to a Building Management System (BMS) or Building Automation System (BAS).
What standards and approvals does the LF709 assembly meet?
The LF709 assembly meets numerous standards and approvals including ASSE No. 1015, AWWA C510-92, CSA B64.5, UL Classified File No. EX3185, IAPMO PA 31, and is NSF Certified to NSF/ANSI 61-G. It is also FM Approved for 4" to 10" vertical "flow up" with OSY gate valves only.
