Van der Ende Pompen B.V.
Maasambacht 4
2676CW Maasdijk
Nederland
Installation manual Envalve series VK, VKF and PVK
Page 7 of 23
Name
a
Drive
b
Position indicator
c
manual - auto control button
d
Base plate
e
Coupling
f
Housing
g
Paddle
h
Secondary butterfly valve
i
Collar
j
Flange
k
Primary butterfly valve
(direct driven)
l
Seal
m
Connector shaft
n
Coupling rod
Table 4. Names of the main components.
1.3 Operation and manual control
It is possible to operate the Envalve remotely, but it is also possible to operate the Envalve manually, that
is to say, it is possible to manually open or close ( turn ) the Envalve. The procedure for this differences
between the different versions;
Important; when the valve is switched from manual to automatic operation, the valve should be
half open (exactly between open and closed)!
Make sure the automatic operating of the Envalve is disabled before any manual operating is tried!
VK: press the black knob on the upper side of the drive, as long as this knob is pressed, the Envalve
can be controlled manually using the connector shaft (m).
VKF: turn the red knob on the side (c) to the man (manual) position, the Envalve can now be
controlled manually using the connector shaft (m). To reset the valve to automatic (remote)
operation, turn the red knob (c) to the auto position, then push against the connector shaft (m) until
a click is heard.
PVK: there are two options for the PVK. The first and most desirable option is to use a flat screwdriver
to turn the control screw (nr. 6 in picture 8) a quarter, this is only possible if the pneumatics are
connected. The other option is to use a spanner to turn the axle on the upper side of the actuator
(drive), this is only possible if the pneumatics are disconnected (no air pressure on the control valve).
For this last option, also the pneumatic pressure lines between the control valve and the actuator
should be disconnected. Make sure the air pressure is not re-connected when these lines are
disconnected.
The position indicator (b) indicates the position of the paddle.
Every Envalve is equipped with two limit switches, these switches stop the valve when it s in the most
open or most closed position. There is a possibility to use these switches or to incorporate a
potentiometer in order to be able to (electrically) read the position of the valve. The limit switches are
sealed for warranty purposes.
For the remote operation paragraph 4.2 and the annexes can be consulted, in which an electric scheme of
the Envalve can be found. Further connection (to a control panel or something alike) is not included in this
installation manual.
