Van der Ende Pompen B.V.
Maasambacht 4
2676CW Maasdijk
Nederland
Installation manual Envalve series VK, VKF and PVK
Page 4 of 23
1. Identification
In this chapter some general information about the machine is listed. The purpose of this chapter is to
state the boundaries of the machine, the global functioning and possible applications of the machine.
1.1 General information
1.1.1 Description of the machine
The Envalve is available in different versions; the VK with max. NW63, the VKF from NW75 up to NW200
and the PVK from NW20 up to NW200. All Envalve s are electrical or pneumatic powered butterfly valves.
An Envalve consists of five main parts:
1.
Motor plate; metal base plate (d) single or double version.
2.
Butterfly valve; 1 or 2 butterfly valves with EPDM or FPM seal (f, g and possible h).
a.
Later on, this is referred to as valve or actual valve .
3.
Drive; electromotor or pneumatic actuator (a).
4.
Connector; between the motor and the butterfly valve and in case of a double Envalve version also
between both butterfly valves (e and n).
5.
Connection between the piping and the valve(s) (i and j) by means of a collar or nut.
The purpose and function of the Envalve is the regulation or stopping of a flow of fluid media through a
pipe. The Envalve can be operated remotely.
The valve has an outgoing axle with which the valve can be rotated. By means of fixing a remote operated
drive on this axle, the valve can be operated remotely.
In case of the double Envalve version (two interconnected valves with one drive), the valve with the drive
on top is in the position indicated with the indicator (b) while the other valve is exactly 90 degrees rotated
from this position. This is default, other configurations are possible.
The Envalve s function is the regulation of a flow of fluid media through a pipe or in case of the double
Envalve version the mixing of two flows of fluid media with a certain proportion to each other.
It is prohibited to use the Envalve otherwise than fully connected and installed in a suitable piping system
with a maximum working pressure of 6 bar. The difference between the pressure before and after the
Envalve must be below 6 bar.
The Envalve is therefore classified as an unfinished machine.
