
SP00000148 - E.SYBOX NRV (E.SyBox N.1 / N.2; N.1)
DAB Spare Part SP00000148: NON RETURN VALVE, GULF TYPE
Compatible pump: E.SyBox N.1 / N.2 Version N.1

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*PWC RO Membranes do not carry a warranty
RO Membrane Use & Warranty
*Reverse osmosis membrane performance and lifespan depend on feed-water quality and temperature, proper installation, operating pressure, and a correctly sized drain-flow restrictor. Appropriate pretreatment—such as sediment filtration, chlorine/chloramine removal, or hardness control—may be required based on your water conditions.
Cold water naturally reduces membrane production, even when the membrane is functioning properly. Published GPD ratings are measured under specified test conditions, including a water temperature of 77°F (25°C). Actual production may vary with water temperature, pressure, and water quality. Water temperatures above the manufacturer’s operating limits can damage the membrane.
Inadequate pretreatment, an incorrect or clogged flow restrictor, insufficient drain flow, or operation outside the manufacturer’s limits can cause premature fouling, mineral buildup, clogging, or membrane damage. These conditions may reduce water production and filtration performance.
Fouling, scaling, and damage caused by improper installation, maintenance, unsuitable water conditions, or operation outside the manufacturer’s specifications are not considered manufacturing defects. Refund or warranty requests involving these conditions are subject to review and the applicable manufacturer’s warranty terms. Reduced production caused by cold water or other operating conditions does not establish that a membrane is defective.
Please check out the resources page and if you cannot find your answer, please contact support@ProWaterConnect.com before installation if you need help confirming membrane compatibility, pretreatment requirements, or flow-restrictor sizing.
Order Processing
Orders are processed on business days, excluding holidays. Processing time depends on product availability and fulfillment location. Any stated processing time is separate from the carrier’s transit time.
Some products may ship directly from our suppliers or manufacturers. Orders containing multiple items may arrive in separate shipments.
Shipping Rates & Availability
Available shipping options and charges are displayed at checkout. Shipping costs may vary based on the delivery address, package size, weight, and shipping method. If your address does not show an available shipping option, please contact logistics@ProWaterConnect.com for assistance.
Delivery Estimates & Tracking
Delivery estimates are estimates unless a guaranteed service is expressly offered. Weather, carrier disruptions, and other circumstances may affect delivery.
Tracking information will be provided when available after your order ships. Please allow time for the carrier to scan the package and update its tracking information.
Backorders & Shipping Delays
If we cannot ship within the stated timeframe—or within 30 days when no shipment timeframe was provided—we will notify you, provide an updated shipment estimate when available, and offer the option to accept the delay or cancel the unshipped portion of your order for a prompt refund.
Shipping Addresses & Order Changes
Please confirm that your shipping address is complete and accurate before placing an order. Contact us promptly if you need to correct an address or request a cancellation. Changes may not be possible once fulfillment has begun. Any additional charges for an address correction or reshipment will be explained before proceeding.
Damaged, Missing, or Incorrect Shipments
Inspect your shipment upon arrival. If an item arrives damaged or incorrect, please keep the packaging and contact support@ProWaterConnect.com promptly with your order number and photos of the item, shipping label, and packaging.
If tracking shows delivery but you cannot locate your package, check nearby delivery areas and with other household members, then contact us. We will help investigate with the carrier or supplier.
For returns and warranty requests, please refer to our Refund & Warranty Policy.
Questions?
Contact support@ProWaterConnect.com for assistance with your shipment.