A.R.I. D-050 User Manual

Installation and Maintenance of

A.R.I.’s D-050 Combination Air Valves

A. Installation

A.1 The air valve will be mounted on a riser,

A.2 An isolating valve will be installed below the air

B. Basic, Periodic, Maintenance

B.1 Shut the isolating valve below the air valve.
B.2 Unscrew the body of the plastic air valve (1).
B.3 Remove the Clamping Stem (3) and the float (4),

B.4 Check to make sure the Rolling Seal is

B.5 Unscrew the bolts (11) that connect the main

B.6 Wash the body and the cover in clean water in

B.7 Reinstall in reverse order and fasten and tighten

First, insert half the length of the rolling seal tail

B.8 Open the isolating valve beneath the air valve.

connected to the top of the pipe.

valve.

and wash the inside of the body, the Clamping
Stem, the float, and the Rolling Seal (2), with
clean water.

unharmed (not torn or cracked) and is attached
precisely in the middle of its groove in the float.

valve cover (7) to its body (13).

order to remove coarse grime or accumulated
scale. Wash the nozzle seal and the float too.

all bolts. Make sure to re-assemble the upper air
valve correctly:

into its groove in the body (1), and then, push the
rest of the way, to the end of the groove, using
the Clamping Stem (3). Make sure the Rolling
Seal is set in place.

Parts Specification

1. S-050 Body

2. Rolling Seal

3. Clamping Stem

4. Float

5. Base

6. O-Ring

7. Cover

8. Nozzle Seat

9. Nozzle Seal

10. O-Ring

11. Bolt & Nut

12. Float

13. Body

A.R.I.

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