Water Block
®
safety valve
28
INSTALLATION
1. The device must be installed in vertical position, flow downwards.
2. Manually screw the WB to the tap having suitable thread (3/4” gas), inserting the filter ‘E’ with its
convex side facing upwards (
fig.2
). The WB will not operate properly if the filter is not installed
correctly. If a tool is used, apply it to the octagonal section ‘A’ of the valve housing.
3. Screw the supply hose ‘C’ to the lower end of the WB. If the supply hose is equipped with a filter,
the latter must be substituted by a flat rubber washer ‘F’. If a tool is used to hold the valve, apply it
to the octagonal section ‘B’ of the valve housing.
4. The WB will shut off if a failure occurs, causing a water leak whose flow exceeds the set point value
set with the pointer “P”. The WB device does not protect against small leaks.
RESETTING THE WATER BLOCK®
To reset the Water Block again after it has shut off, turn the tap off and carry out the necessary
repair work. Remove the supply hose ‘C’ from the Water Block and press the coloured plunger ‘H’
which is located inside the lower housing of the device itself (
fig.1
).
It may be difficult to press this plunger if there is high pressure at the inlet side of the WB. In this
case, slacken the device from the tap: the plunger ‘H’ can then be pressed with ease. Repeat the
operation as described in the section headed ‘Installation’.
To avoid any possible damage that may be caused by water freezing inside the WB after its installation, the room temperature
should never drop below 2° C.
W&H decline all responsibility deriving from the incorrect use of the WB or from its use for applications and/or solutions not
expressly foreseen by the above instructions.
MAINTENANCE
Depending on the conditions and frequency of usage of the Water Block, it is recommended to clean out the inlet filter ‘E’ and to replace
the seal ‘F’ periodically.
We reserve the right to modify any features without prior notice.
Produced by
ELTEK s.p.a.
Tel. 0142 335511
Fax 0142 335555
15033 Casale Monf. (Italy)
[email protected]
