Item # LG-DDR-F3, PVDF Recirculating Lab Gooseneck Faucet, Deck Mount, w/ Duraline Control Valve, Recirculating Control Module w/ 3/8" Inlet & Outlet, Handle in Front

LG-DDR-F3, PVDF Recirculating Lab Gooseneck Faucet, Deck Mount, w/ Duraline Control Valve, Recirculating Control Module w/ 3/8" Inlet & Outlet, Handle in Front

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• FEP Recirculating Tube: Extends from the recirculating module all the way to the point-of-use control valve
• Continuous Flow Technology: Maintains constant water movement through the entire system
• Non-Consumption Design: Water returns to the reservoir through the recirculating tube instead of being wasted
• Recirculating Control Module: Enables proper flow return to the reservoir with appropriate pressure balance
• When piping the faucets in series, a common return line can accept each individual recirculating tube
• A small pressure drop downstream of each faucet ensures positive flow through the recirculating system
• Provides adequate pressure for main water dispensing while maintaining continuous circulation
• High-Purity Materials: 100% virgin natural PVDF wetted fluid path with PTFE seals
• Zero Contamination: No elastomers, metals, or lubricants in construction
• Maximum Durability: Designed for extreme industrial environments
• Compliance: Meets and exceeds FDA, USDA, and USP standards
• Easy Maintenance: Completely renewable control valve
• Ideal for Type I and Type II deionized water, reverse osmosis (RO), and ultra-filtrated water systems in:
• Research laboratories, Pharmaceutical facilities, Semiconductor manufacturing, Medical facilities
• Any environment requiring ultra-pure water delivery
• Objective: Provides constant flow of DI Water when the point-of-use dispense is not being utilized
• Stagnation Prevention: Continuous flow prevents water stagnation and subsequent bacterial growth
• Optimized Flow Rate: 4.5 feet per second or greater recommended for recirculating flow stream
• Biomass Protection: Maintains flow rate to prevent bacteria and other biomass from adhering to internal surfaces
• Flexible Implementation: Even lower flow rates provide benefits over a stagnate system
• Maximum Output: 2.5 GPM maximum @ 80 PSI
• Pressure Rating: 150 PSI maximum
• Ergonomic Operation: Low torque on/off with 120° rotation from full flow to closed
• Positive Stop: Definitive off position for reliable operation
• Industry Standard Compliance: Black handle with white marker and "DI" text per SEFA code No. 7
• Recirculating Control Module: Enables proper water return to the reservoir tank
• FEP Recirculating Tube: Runs from the module all the way to the point-of-use control valve for complete circulation
• Zero Dead Leg Design: Control valve activation at point of use eliminates stagnation pockets
• Ultra-Smooth Internal Flow Path: Minimizes potential for bacterial adhesion
• Unique Heavy Wall Construction: Superior durability and chemical resistance
• PTFE Sealed Mechanism: Encapsulated PTFE shut-off seal for unlimited life
• Removable Barb Tip: Leaves a 1/4" Female NPT Connection for adaptability
• Through Deck Nipple: Provides secure mounting and routing for the recirculating tube
• Nut Ring: Secures faucet assembly to the mounting surface
• Remove the Recirculating Module and Recirculating Tube from the through deck nipple
• Mount the faucet in the desired location through a 1" diameter hole
• Tighten to deck with the Ring Nut supplied
• Insert the Recirculating Tube into and through the Through Deck Nipple until the 3/8" male NPT thread in the inlet connection of the Through Deck Nipple is visible; tighten by hand plus 1/4 wrench turn
• Connect the supply line to the 3/8" female NPT inlet connection
• Connect the recirculating return line to the 3/8" female NPT outlet connection
• Pressure test all connections
• When piping multiple recirculating faucets in series, a common return line may be used to accept each individual recirculating tube. A small pressure drop downstream of each faucet ensures proper system function.
• Note: High-density PTFE tape is the recommended thread sealant for all connections.
• Total height: Approximately 13.4 inches
• Recirculating module height: 2.8 inches
• Width at widest point: 2.6 inches
• Body Material: 100% virgin natural PVDF (polyvinylidene fluoride)
• Recirculating Tube: FEP (fluorinated ethylene propylene)
• Seals: PTFE (polytetrafluoroethylene)
• Wetted Components: PVDF and PTFE only
• No elastomers, metals, or lubricants shall be used in fluid pathway construction
• Non-pressurized tank provides pressure drop for recirculating flow
• Recirculating tube returns water to tank/reservoir (non-consumption design)
• Recirculating Module with 3/8" female NPT inlet and outlet connections
• Compatible with series installation using common return line
• Maximum Flow Rate: 2.5 GPM @ 80 PSI
• Maximum Operating Pressure: 150 PSI
• Recommended Recirculation Flow Rate: 4.5 feet per second or greater
• Provides constant DI water flow when point-of-use dispense is not being utilized
• Prevents stagnation and subsequent bacterial growth in UPW systems
• Control Valve: Duraline with 120° rotation from full flow to closed
• Recirculating Module: Integral with 3/8" female NPT inlet and outlet connections
• FEP Recirculating Tube: Extends from module to point-of-use control valve
• Removable Barb Tip: Leaves 1/4" Female NPT Connection
• Zero dead leg design at point of use
• Heavy wall construction for durability and chemical resistance
• Positive stop at off position
• SEFA 7 compliant black handle with white marker and "DI" text
• Mounting: Deck mount through 1" diameter hole with Through Deck Nipple and Ring Nut
• Supply Connection: 3/8" female NPT inlet
• Recirculation Connection: 3/8" female NPT outlet
• Recommended Thread Sealant: High-density PTFE tape
• FDA, USDA, and USP standards for high-purity applications
• SEFA code recommended practice No. 7 for DI water applications
• SEFA 7-2010-8.2a for renewable components