As an Amazon Associate, we earn from qualifying purchases. 1" Flow Sensor FS100 (OPEN BOX) - Bulk Reef Supply Neptune Systems . 210686OB Gallery Attributes Brand name, Manufacturer name, ManufacturerNeptune Systems Extra Product Name1" Flow Sensor FS100 (OPEN BOX) - Bulk Reef Supply extendedQty, qtyInStock0 keywordssaltwater aquarium supplies, reef aquarium supplies, marine fish tank, live rock, GFO, protein skimmers, two part dosing, aquarium carbon, fish food, RO/DI Systems, ecotech marine, aquaillumination, neptune systems, kessil, innovative marine moq, multiple, tierMinQty11 MPN, SKU210686OB qtySourceupdateFromUrlEntry snippetKnow Your Flow! 1 Flow Sensor for the Fluid Metering Module from Neptune. The FS-100 will work with flow rates from 150-1500 gph, and will connect to any standard 1 Slip PVC. Usually used with a return pump, this flow sensor can be placed in line with the flow on any pipe, connected to the FMM, and communicate to your Apex the flow rate of water through that pipe. The flow sensor itself uses British Standard Parallel Pipe (BSPP) threads so all BRS customers we have included two specially designed PVC unions with slip fittings to adapt it to standard 1″ PVC plumbing. What's Included? 1x 1 Flow Sensor 2x SBPP x 1 Slip Unions tierPrice156.66 Distributor offers SellerSKUMOQIn stockMultiplePrices bulkreefsupply.com210686OB111 @ $56.66