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Common Components Auto Shut Off Valve (ASV): The ASV is a hydraulically actuated valve that closes off the inlet water when the tank pressure reaches -60% of incoming line pressure. A special 90% option is available for systems with permeate pumps. There are two common types. U-Turn and Flow Through. The majority of IWP's RO systems utilize the USA made U-Turn design. Be very careful when replacing the ASV. Be sure to match all of the ports as shown. "IN" is typically from the pre-filters. "OUT" goes to the inlet of the membrane. "TANK" lines go anywhere after the per- meate of the membrane. TANK TANK . IN \ Check Valve: Most R.O. systems use a check valve on the permeate line out of the membrane to prevent the pressurized water from the tank back-feeding the membrane. A failed or missing check valve would cause the system to cycle 4friftiS` on and off constantly and may even damage the membrane. Some check valves are integrated in the membrane or 4144IS membrane housing, others are integrated into a John Guest or Jaco fitting, others are simple inline checks. Systems with a permeate pump typically do not require a check valve as the permeate pump acts as a checking device. Flow Restrictor: Flow restrictors come in many forms. The most common is a "Capillary" style. Corkscrew, inline and encapsulated all perform the same function. These allow a specified amount of water to go across the membrane and down the drain so as to build up pressure on the membrane and to prevent it from fouling. Modern RO membranes like the "Pentek "GRO" use much smaller flow restrictors. Common sizes range from100 ml/min to over 1000 ml/min. 'Low 41MWINNAVIIIIIIIMIll iNitalill , OM II Permeate Pump: Permeate Pumps increase traditional RO system efficiencies and allow system to operate at pres- sures as low as 40 PSI. The storage tank will be filled with more water than a system using an ASV. Most permeate pump systems do not use an ASV but a 90% ASV is available for applications where infrequent water use is common. Booster Pump: Booster pumps are used where low pressure is common or consistent performance is required. Not commonly used or needed in the USA except on larger systems or where TDS exceeds 1500 PSI. If your water pressure is above 40 PSI and your TDS is below 1500 TDS then a Permeate Pump may be a better solution. Delivery Pump: Delivery pumps come in many sizes for different applications. Variable speed pumps are popu- lar when the flow rate will vary. Most applications are well served by a properly sized non variable pump with an accumulator tank. The accumulator acts as a cushion for the pump so as to mitigate cycling which can cause excessive wear and tear on the pump. Storage Tank: A pressurized storage tank is used on most smaller systems in lieu of an atmospheric tank. The tank allows the water to be distributed without the need for additional pumps or controls. Tanks range in size from .2 gallon up to 80+ gallons. The actual capacity of the tank varies based on many factors. Air pressure inside the tanks should be adjusted to -6 PSI for the majority of applications. Air pressure can only be set when the tank is com- pletely empty of all water. The tanks use a common Schrader valve for adjusting the air pressure. John Guest, GA Murdock, Parker, legris and Jaco Fittings: Most companies use inferior and far less mosis systems. We use the John Guest lead free angle stop installation kit in most of our system costly quick connection fittings. We use only the best fittings available to assemble our Reverse os- builds, this adds cost but ensures the best installation experience! 6 1 " rj I Air Gaps: An air gap between the RO concentrate and the drain may be required. Check your local codes for spe- cific requirements. We offer many air gaps including faucet integrated, dishwasher style 'rid inline air check. All air gaps have the potential to leak so Ere i.ire to locate these only where,a leak will drain into an acceptable location. ' a dr' if Quantum Filtration and UltratViolet: While not required in most applications, it is never a bad idea to add - 1 v..*...;....- 1101 as...•• le:arwir • Quantum filtration oran -UltraViolet system on the outlet of the RO. Quantum filtration is a catalyst with - . i • 01 0 4 • .4It'' 1.1111 e 0.0 zi• ..1.-. iii - %Arta 46 .ir • htoe activated surfaces..The microorganisms (bacteria, viruses,(protozoa, micro-algae, yeast etc.) that get into V, - ..rOr /46g • womb wIle . -411w- 4111+Allfilr- li AI a direct Contact:with these surfaces instantly lose their, _electrons to the positive active sites causing their SIM 4 4.4.7-,144010, -04,11'-i.• --"rilLaill W.440710 • Intl entire.structure to,collapse.„UV,thas been,__used forldisinfection purposes for more than a century and is _ in.:•pi . "or ..a.•=airvairmer.: -5.tioir-Jildskil 40 proven to be effective againstmicroorganisms, particularly the chlorine.resistant Cryptosporidium and ...- ....--' vGiardia.i. - or', ...... ." ...4