INSTALLATION, OPERATION, &
MAINTENANCE MANUAL
TITLE:
F70VP Series
Rev. B
Vacuum Relief Valve
Page 6 of 20
2.3 INSTALLATION
Prior to installation, check that the vacuum set pressure on the nameplate is as specified, and meets
system requirements. The F70VP Series vacuum relief valve should be installed in the upright position
as shown below, in accordance with accepted piping practices.
If a block valve is used below the relief valve, it should be opened before operating the system. This
block valve should be locked open during normal system operation.
2.4
STARTUP
Foreign particles or dirt can damage the valve and make it inoperative. Prior to installation, clean out the
piping thoroughly. A screen may be fastened to the open side flange on the main valve to prevent the
introduction of debris. If the valve is not installed immediately, inlet and outlet connections should be
protected and covered.
As soon as the valve is installed, the system may be brought to its operating pressure. Verify that the
valve seat is leak-tight, in accordance with Section 6.0.
The valve is now ready for service. Inspection and maintenance should be performed on a regular basis,
typically once a year, depending on the service conditions.
