N203/204 series 3-port solenoid valves for nuclear power plants are pilot type valves incorporating diaphragm.
With high flow rate structure and operation at low differential pressure,the valves ensure excellent control reliability.
■Applicable fluid：Air / Inert gas
■Valve type : NA/NB/NC203（Normally closed type）） NA/NB/NC204（Normally open type）
■Operation type : Pilot (diaphragm)
■Port size：Rc3/8 , Rc1/2
Model code NA/NB/NC203 NA/NB/NC204
Valve operation type Normally closed Normally open
Port size Rc3/8 Rc1/2 Rc3/8 Rc1/2
Orifice size（mm） 15.9 15.9
Cv value 3.3 4.4 3.3 4.4
Operating
pressure
differential
（MPa） Min. 0.05
Max. Air/Inert gas AC 1.02
DC 1.02
Body Brass
Seal / seat Nitrile rubber（only NC）,Fluorine rubber（only NA,NB）,Ethylene propylene（only NA,NB）
Poppet Polyacetal（only NC）,Stainless steel（only NA,NB）
Cartridge Brass
Housing NEMA4 drip-proof
Solenoid Applicable voltage AC 100V , 110V , 115V , 120V
DC 100V , 110V , 125V
Allowable voltage fluctuation -15% to 10% of applicable voltage
Insulation class Class H
Leadwire length（mm） 600
Ambient temperature Refer to catalog for details.
Installation position As desired（Horizontal mounting with solenoid at upper side is recommended）
Options Mounting bracket , NPT（port） , Terminal box
