Rotex 30138 Operating & Maintenance Instructions

IM No. : IM/V/0045,
Rev. 1 dt.06.09.2017
Page 1 of 5
MOUNTING, OPERATING, TESTING & MAINTENANCE INSTRUCTIONS
FOR ROTEX 3/2 DIRECT ACTING ON/OFF/REGULATING NAMUR SOLENOID VALVE
MODEL 30138, 30138LW
ROTEX retains all rights to this publication.
All details within this manual and the catalogue are subject to change without manner.
ROTEX will not be responsible for any damage whatsoever arising from the use of the Solenoid Valve, due to misuse or
incorrect installation or misinterpretation of the information contained herein.
CONNECTION
VALVE TYPE IN OUTLET OUTLET EXHAUST
30138, 30138LW 1 2 4 3
(A) OPERATING PRINCIPLE
In De-energized condition of the solenoid A and B, applied the pressure at inlet port # 1, media pressure passed up to the
Duse hole, which is blocked by plunge assembly, a part of media drawn through the pilot passage of the plunger assembly
and support to plunger spring to moves downwards. In this state, Inlet port # 1 and Outlet port # 2 is disconnected. Outlet
port # 2 and Exhaust port # 3 is connected. Media cannot come out.
In energized condition of the solenoid of the Solenoid A, plunger moves up and, thus applies the pressure at Inlet port # 1,
above the plunger assembly pressure released from exhaust port # 3. In this state Inlet port # 1 and Outlet port # 2 is
connected. Outlet port # 2 and Exhaust port #3 is disconnected.
Now to hold the pressure in actuator, energized the solenoid B and de-energized the solenoid A. To release the pressure
from actuator de-energized the solenoid B. Actuator's spring side pressure released from port no. 4.
Solenoid B
Solenoid A