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
