I-MIX WATER FILTER MODEL 1248-70L-F117Q3-RESIN (52 L I-MIX). I-MIX WATER FILTER MODEL 1248-70L-F117Q3-RESIN (52 L I-MIX) is an automatic water filtration system designed for water treatment solutions using I-MIX filter media. The system combines an FRP pressure vessel, I-MIX filter media and an F117Q3 automatic control valve in one complete set. The system is based on a 1248 FRP vessel with a 70 L brine tank configuration and contains 52 L of I-MIX filter media. The larger filter media volume makes this model suitable for systems requiring greater media capacity within the I-MIX product range. Technical specifications. Product: I-MIX WATER FILTER. Model: 1248-70L-F117Q3-RESIN. FRP vessel size: 1248. Brine tank capacity: 70 L. Control valve: F117Q3. Filter media: I-MIX. Media volume: 52 L. System type: automatic water filter. Main benefits: complete I-MIX water filtration system; automatic control valve operation; 52 L I-MIX filter media configuration; high-capacity filtration configuration; ready-to-install system configuration; suitable for integration into complete water treatment systems; suitable for residential and commercial water treatment applications.