mcr ZIPP
fire protection shut-off valve
MERCOR SA –
The company reserves the right to modify and change the document. Version 20.10.20.5
4/14
4. DEVICE DESIGN AND PRINCIPLE OF OPERATION ________________
Design ____________________________________________________________________________
The basic valve components include: a body with a round cross-section, a mobile shut-off cover (a mushroom), a
connection stub pipe and a release and control mechanism started automatically after the thermal release or an
electromagnetic release. The connection stub pipe is made of galvanised steel sheet. The valve nozzle is made of
powder-painted steel sheet. The isolation partition is made of a fire resistant material, covered from outside with
powder-painted steel sheet. The partition is set on a partially threaded mobile pin guided through the mechanism
body.
~45
max 150
Action _____________________________________________________________________________
In a normal position, the shut-off valve is open. Closing the valve (safety position) takes place:
remotely, by activation of an electromagnetic release 24V DC or 230V AC(controlling by the "current
impulse" or a "current gap"),
automatically, by activation of the thermal release
The design of the drive system allows regulation of performance during the time of normal valve operation (setting
the gap between the mechanism body and the mushroom). The regulation takes place by rotating the mushroom
along the valve axis. The flow is increased by rotating the mushroom in the counter-clockwise direction and
decreased by rotating it in the clockwise direction.
NOTE
Under any circumstances do not tug at the valve cover shield in order to open it.
Release and control mechanisms _______________________________________________
A release and control mechanism for the mcr ZIPP valve can be:
An RST type mechanism composed of a drive spring and a fuse release
An RST+EKI24 type mechanism composed of a drive spring, a fuse release and an electromagnetic
release started by applying the supply voltage.
An RST+EKP24 type mechanism composed of a drive spring, a fuse release and an electromagnetic
release started by removing the supply voltage.
An RST+EKI230 type mechanism composed of a drive spring, a fuse release and an electromagnetic
release started by applying the supply voltage.
An RST+EKP230 type mechanism composed of a drive spring, a fuse release and an electromagnetic
release started by removing the supply voltage.
Optionally, there is a possibility to equip the valve with WK1 limit switches that signal the valve operation status
(open/closed).
