... containing soft particleInstruction :1.The installation of signal switch box:the signal switch is used to send the valve and actuatorposition signal ... (ax-cording to following picture).the pneumatic actuator 3 with the signal switch box and yoke,fixed by 4screws.The accessory ... the details, please contact us!TypeStraight-through,cast globe valve ; 3-way cast globe valveSize15,20,25,32,40,50,65,80 ...