A.R.I. D-025 EN - Manual

A.R.I. Flow Control Accessories Ltd. Kfar-Charuv 12932 Israel Tel. 972-4-6761988 Fax. 972-4-6763402 www.arivalves.com
A.R.I.
0302EnM-D025-10
D-025
COMBINATION AIR VALVE FOR WASTEWATER
SHORT VERTION
Periodic Maintenance
For air valve without back wash assembly.
(Each 6 months and according to liquid quality).
1) Shut the isolating valve underneath the air valve.
2) Open pressure relief valve (3) and make sure that
internal pressure inside the air valve body is released.
3) Open and remove the two parts of the clamp.(2)
4) Pull out the top part,wash the mechanism and the
inside of the air valve.
5) Reassemble the two parts and tighten the screws (2)
6) Pay attention to correct placement of the seal’s
O-Ring (4)
7) Re-open the inlet isolating valve.
Installation
1) The wastewater air valve should be installed
vertically on a riser on the crown of the pipeline.
2) An inlet isolating valve should be installed
underneath the air valve.
3) Do not turn the plastic head (1) of the air valve,
separately. It can cause a leakage.
4) To change the direction of drainage outlet,
open the main body-clamp (2) and turn the air
valve upper body.
5) For plastic flanges, fit protective washer for
each bolt.
Warning! Do not remove or disassemble
the air valve from pipeline before
performing the following steps:
1) Turn off riser shut off valve.
2) Open up pressure release valve (3) located on
the base of the D-025.
3) Remove valve from line only after ensuring that
internal pressure in the valve has been released.
3
4
2
1