WGR
– Worm Gear Reducer
Instruction and operating manual
© Copyright by BIFFI Italia. All right reserved
MAN 684/Rev 5 Page
42
11.9
Optional equipment ( applicable to all WGR Models)
11.9.1
Relief Valve on sight glass version
In applications where a gas leak may occur through the main valve, that passing through the junction between the
valve and gearbox can lead to pressurize the volume between the female screw and sight glass it is possible to
install a relief valve on sight glass to prevent overpressure.
The Relief valve , item 43 in the following picture typical for all WGR models, is installed in place of the cylindrical
plug ( item 8 of previous part lists).
The relief part number is 345RELOBLO.
Please refer to detail “A” in picture here below.
11.9.2
Mechanical Stopper Protection
Also note the possibility of providing, on request, the option of stopper provided with stopper protection ( please
refer to item 2+3+4+5 of DETAIL B).
Please refer to detail “B” in picture here below.
