SWEP 24 Plate Heat Exchanger with Thermostatic TMV V2/3 Mixer Valve For instantaneous Domestic Hot Water - Anti - scald for safe use of showers and taps Plate Heat Exchanger System, safely provide highest flow rates to RV and Marine domestic hot water systems High Quality Swep Plate Heat Exchanger Insulation Jacket included Stainless and copper construction  Brass and Stainless Connections TMV 2/3 Mixer Valve  Safely Control Temperature  High Flow 24 Plates Heat Exchange takes place using counter flow technology, opposite directional flow between liquids. on independent circuits ensuring coolant and water circuits are kept separate and free from contamination. Providing a constant supply of hot running water. 3/4" BSP connections. More Plates for a Higher Flow and Economic Heat Transfer. Large high efficiency flow control veins maximise the liquids conversion rate between the Copper and Stainless Braised plates. whilst the vacuum braising technology ensures the separate circuits stay clean and safe. Suitable for the Following Heating Systems Great Upgrade for Chinese Hot water systems Eberspacher D5WSC Eberspacher Hydronic S3 D5E Webasto Thermo Top C Webasto Thermo 90ST Why install insulation jackets for plate Heat Exchangers? The main goal here is to limit the heat loss to atmosphere. Non-insulated plate heat exchangers always lose heat. minimising heat loss will help ensure highest heat transfer to domestic hot water systems. Higher exit temperature from the heat exchanger will allow greater cold water dilution quantity, which will in turn allow higher flow rate at tap or shower head. All plate heat exchangers should ideally be insulated