VVF31 Siemens two-way valve, also known as the Siemens electric control valve VVF31 electric two-pass valve, Siemens two-way regulating valve electric two-way temperature control valve 
 Company models 
 VVF31.40 \ VVF31.50 \ VVF31.65 \ VVF31.80 \ VVF31.90 \ VVF31.91 \ VVF31.92 
 Which VVF31 flanges to connect two-way valve, pressure rating PN10 
 VVF31 Siemens electric control valve parameters are as follows 
 PN pressure rating PN10 
 The valve flow characteristics of linear 
 Flange connection ISO7005 
 Travel 
 DN25-80 20mm 
 DN100-150 40mm 
 Electric two thermostatic valve material 
 DIN EN1561 standards body the GG-25 
 Stem stainless steel 
 DN25-DN65 brass 
 DN80-DN100 bronze 
 Sealing ring 
 Standard Brass 
 Sealing material of EPDM-O ring 
 VVF31 use 
 For heating systems, air-conditioning systems as control valves and safety cut-off valve. Applies only to the closed system 
 Model DN (mm) of Kvs (m3 / h) supporting the implementation of 
 VVF31.25 25 5 
 VVF31.40 40 19 
 VVF31.50 50 31 SQX62, SKD62, SKB62 
 VVF31.65 65 49 
 VVF31.80 80 78 
 VVF31.90 100 124 
 VVF31.91 125 200 SKC62 etc. 
 VVF31.92 150 300 
 Three-way valve model 
 VXF31.25, VXF31.40, VXF31.50, VXF31.65, VXF31.80, VXF31.90, VXF31.91, VXF31.92 
 Flange connecting two-way valve, pressure rating PN10 
 Body: Ductile Iron GG-25 
 Nominal diameter: DN25-150mm 
 Flow: KVS5-300km3 / h 
 Stem stroke: 20mm or 40mm 
 And equipped with actuators SQX .., SKD ... SKB .. and the SKC .. series actuators with the installation. 
 Ordering: 
 Please indicate model when ordering, for example: electric body VVF31.50, valve actuators SQX62, valve and actuator are separate packaging and delivery. 
 The valves are supplied without counter-flanges and without flange gaskets.