NON RETURN VALVES NON RETURN VALVES Inta’s spring loaded non return valves are used to control the water flow in one direction and to prevent backflow of the water. In the event of back pressure the non return valve seal sits inside the housing eliminating the risk of backflow. spring loaded low noise single non return valve Prevents cross-flow Controls water flow direction Low noise Soft seat Complete range of double check valves also available Product Range female x female non return valves Description Single non return valve ½" FxF connection Single non return valve 3/4" FxF connection Single non return valve 1" FxF connection Code £228.75 NRV0860050 £228.75 NRV0860075 £228.75 NRV0860100 Single non return valve 1 1/4" FxF connection NRV0860125 £228.75 Single non return valve 1 1/2" FxF connection NRV0860150 £228.75 Single non return valve 2" FxF connection £228.75 NRV0860200 Single non return valve 2 1/2" FxF connection £228.75 NRV3082250 Single non return valve 3" FxF connection £228.75 NRV3082300 Single non return valve 4" FxF connection NRV3082400 male x female non return valves Description Single non return valve ½" MxF connection Single non return valve 3/4" MxF connection Single non return valve 1" MxF connection Code £228.75 NRV0860050MF NRV0860075MF £228.75 £228.75 NRV0860100MF Single non return valve 1 1/4" MxF connection NRV0860125MF Single non return valve 1 1/2" MxF connection NRV0860150MF Single non return valve 2" MxF connection NRV0860200MF £228.75 Single non return valve 2 1/2" MxF connection NRV3082250MF Single non return valve 3" MxF connection NRV3082300MF £228.75 Single non return valve 4" MxF connection NRV3082400MF NON RETURN VALVES NON RETURN VALVES Dimensions and Kv values Kv 3,11 6,39 ØA 1/2" 3/4" B 34.5 40.5 C 49 57 10,11 1" 48.5 68 16,67 1 1/4" 58.5 70 24,62 38,84 - 1 1/2" 2" 2 1/2" 68.5 85 75 81 - 3" 4" 101 110 154 91 105 118 Technical Specification Max pressure (static) 15 bar Min operating pressure (dynamic) 0.04 bar Operating temperature (water) 0 to 90°C Operating temperature (air) -20 to 110°C Flow rate and Pressure Drop 1/2" 3/4" 1"1/4 1" 1"1/2 2" 10.000 Pressure drop (DP) 1 daPa = 1,02 mmH20 1.000 100 flow rate l/h E&OE 03/2014 flow rate m3/h 300 200 100 10.000 1.000 100 10
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