This kit is identicle to the reverse osmosis kit above but uses the new revolutionary RO UltraTec HF5-4040 membrane instead.This membrane is ideally suited to applications below 50 psi or where quick filling times are needed. The HF5-4040 has much greater flow rates at lower pressure without loss of water quality than all other extra low pressure membranes (eg FilmTec XLE-4040, Hydranautics ESPA4-4040, Osmonic Desal AK4040 etc..). In almost all instances this membrane will negate the need for a pump making it an economical choice for any who need good quality water fast no matter what the inlet pressure. The response from window cleaners up to now has been brilliant - everyone has been amazed at the sheer volume of water produced from a single 4040 membrane. The Twin RO kit can produce water faster than you can use it so is ideal filling up on site.People who bought this item also bought: