OPERATION AND MAINTENANCE MANUAL
12-2015
14
Recommended method of connecting the air valve is presented in the diagram below.
Terminal diameter (tower) should be large enough and correspond at least to the air valve size.
The terminal should be positioned vertically. The drain valve is used to manually aerate and
deaerate as well as to reduce pressure (by release) before the maintenance works begin. Shut-off
fittings make it possible to install and disassemble the air valve as well as the drain valve.
During the system pressure test, the shut-off fittings should remain closed.
Before installing the air valve, the system should be rinsed.
4.3 OPERATION
Cast iron flange valves TYPE 7010, TYPE 7050 and threaded TYPE 7040 should be operated
according to the requirements regarding the air fittings, i.e. oriented as shown in the diagram of
possible orientations. In order to provide full operational efficiency, rinsing valves with clean
water is recommended (once a year). In order to protect the ball (floater) from blocking inside
the body or damaging the ball rubber cover, it is recommended to separate hard solid particles
larger than 5mm from the medium.
4.4 H&S REGULATIONS
Guidelines and recommendation from the OHS regulations apply, regarding the pipeline
systems and devices installed in pipeline stations, heat power stations, water treatment plants,
sewage treatment plants, pumping stations and other objects, as well as the ordinance regarding
general OHS regulations (using hand protection, leg protection, head protection and protective
clothing), especially when working exposed to low or high temperatures.
Product operation out of their intended use is not allowed.
Air valve
Drain fittings
Shut-off fittings
Connector stub pipe
Pipeline
