N20 series 2-port solenoid valves for nuclear power plants are pilot type valves incorporating hanging diaphragm that enables operation
at zero differential pressure.
Applicable pressure ranges from -100 KPa to 1.37MPa,and brass or stainless steel body can be selected for NC application for control of
various fluids.
■Applicable fluid：Air / Inert gas
■Valve type : NB/NC201（Normally closed type） NB/NC202（Normally open type）
■Operation type : Pilot (operates with no differential pressure)
■Port size：Rc3/8 , Rc1/2 , Rc3/4
Model code NB/NC201 NB/NC202
Valve operation type Normally closed Normally open
Port size Rc3/8 Rc1/2 Rc3/4 Rc3/8 Rc1/2 Rc3/4
Orifice size（mm） 15.9 19.1 15.9 19.1
Cv value 3.3 4.1 5.5 3.3 4.1 5.5
Operating
pressure
differential
（MPa） Min. 0
Max. Air/Inert gas AC 0.96 1.37
DC 0.61 0.86
Body Brass , stainless steel
Elastomer Nitrile rubber（only NC）,Fluorine rubber（only NB）,Ethylene propylene（only NB）
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 , Manual operating system
