DURALINE™ DI Water Lab Faucets — Deck Mount (PVC, Natural Polypro, High Purity PVDF)
Fields of Application: Distilled, Deionized, RO, Ultra-filtrated Water, & Chemical Dispensing
Overview: The industry has long awaited a DI water lab faucet that provides the durability and strength of metal—without the contamination and corrosion that metal introduces into the process environment.
Key Features:
• Max flow of 2.5 GPM @ 80 PSI, full open
• Heavy-wall, injection-molded stanchion prevents breakage
• Rugged point-of-use control valve for constant on/off use
• Removable serrated barb tip (leaves 1/4" Female NPT outlet) to attach accessory of your choice
• “Duraline” zero-dead-leg control valve: easy open/close (hard stop), 120° from full flow to closed
• No elastomers, metals, or lubricants used in construction
• All components designed for high-traffic, hard-use environments
• FDA, USDA, and USP standards are either met and/or exceeded
• Ultra-smooth internal flow path
• PTFE sealed; encapsulated PTFE shutoff seal for long service life
• Black handle with white marker and black “DI” text per SEFA code recommended practice No. 7 for DI water applications
• Duraline control valve is completely renewable by replacing the internal cartridge, per SEFA 7-2010-8.2a
• Positive stop at OFF position
• 3/8" Female NPT inlet supply connection; 3/8" O.D. tube × 3/8" MNPT compression tube fitting included
Action: PLEASE CLICK AN ITEM # BELOW TO VIEW ADDITIONAL SPECIFICATIONS & DOWNLOADS
Duraline DI Water Lab Faucets (Wall Mount): PVC, Natural Polypro, and High Purity PVDF
Fields of Application: Distilled, Deionized, RO, Ultra Filtrated Water, Chemical Dispensing.
The industry has long awaited a DI Water Lab Faucet that would provide the durability and strength of a metal faucet, without the contamination and corrosion that metal introduces into the process environment. That was the goal and the achievement of DURALINE. Marquest Scientific's Duraline Faucets offer the ultimate in durability for commercial applications, featuring a full array of heavy-duty faucets that are built to withstand constant use -- and the occasional misuse -- found in commercial applications. Duraline provides the ultimate combination of updated styling and heavy-duty construction. Duraline models can stand up to the extreme wear and tear found in most commercial applications, plus they are backed by a five year warranty against material or manufacturing defects. -- so our customers know they are getting the best product on the market, guaranteed. All Duraline faucets feature a heavy duty, injection molded stanchion, no longer an extruded tube and the most durable control valve available. These control valves prevent handle wobble while ensuring a positive closed position and feature all PTFE sealing. An encapsulated PTFE shut off seal provides an ideal construction geometry for keeping the PTFE in compression for constant on/off operation.
Data Sheet Installation Instructions & Parts List Sales Drawing
PLEASE CLICK AN ITEM # BELOW TO VIEW ADDITIONAL SPECIFICATIONS & DOWNLOADS
DURALINE™ Recirculating Laboratory Faucets — Natural Polypropylene (PPN) or PVDF
How it works (core): For return-to-tank DI/UPW loops using a non-pressurized reservoir. A factory-installed compact recirculating module sits below the deck at the inlet of the thru-deck nipple shank. Module ports are 3/8" FNPT inlet from the supply loop and 3/8" FNPT outlet back to the tank. A 0.125" ID recirculating tube seats inside the module, exits the outlet, and returns water to the reservoir to keep the loop moving when the dispense valve is closed.
Materials & purity (wetted path): Natural PP or PVDF; Virgin PTFE seals; no elastomers or lubricants used in construction; non-metallic path; zero-dead-leg at dispense.
Ports & tube interface: Module 3/8" FNPT inlet and 3/8" FNPT outlet; accepts 0.125" ID recirculating tube that returns to the non-pressurized tank.
Key specs: Target velocity ≥ 4.5 ft/s (with 0.125" ID tube, about 0.2 GPM ≈ 5.2 ft/s); pressure rating 120 PSI.
Valve & control: DURALINE control valve with positive shutoff and 120° metering; encapsulated PTFE shutoff seal kept in compression for constant on/off duty; PTFE stem seal; renewable cartridge enables in-place service.
Models: DL-DDR-2 (Natural PP) · DL-DDR-3 (Natural PVDF).
Applications:
• DI/UPW benches requiring continuous return-to-tank circulation between dispenses
• High-purity labs mitigating stagnation and biofilm risk at the point of use
• Multi-faucet series loops with a common return to a non-pressurized reservoir
Series piping note: For faucets in series, use a common return and introduce a small downstream ΔP (diverter tee, valve, or orifice plate) at each faucet to ensure positive recirculation while maintaining dispense pressure.
Installation notes: Use like materials across components; follow best-practice joining for PP or PVDF; verify velocity at the recirculating tube and set the required ΔP when piping in series.
Next step: Select an Item # below for full specifications, installation details, and downloads.
The Duraline Control Valve is completely renewable by replacing the internal cartridge per SEFA 7-2010-8.2a.
There is a small difference in the length of the needle/stem depending on the lab fixture control valve style.
Note: DL-RC180-PVD and DL-RC-PVD are used in all Duraline control valve bodies regardless of fixture material or size.
