Val-Matic 49A Wastewater Air Release Valve - Manual (Page 3)

2
CAUTION: Install valve with "INLET" port
down or leakage will occur.
ITEM DESCRIPTION MATERIAL
1 Body Cast Iron
2 Cover Cast Iron
3 Leverage Frame* Stainless Steel
4 Seat* Stainless Steel
5 Float* Stainless Steel
6 Gasket* Non-Asbestos
7 Cover Bolt Alloy Steel
8 Retaining Screw* Stainless Steel
10 Float Arm* Stainless Steel
11 Orifice Button* Buna-N
12 Pivot Pin* Stainless Steel
13 Retaining Ring* Stainless Steel
14 Pipe Plug Iron
17 Float Retainer* Stainless Steel
18 Lock Nut* Stainless Steel
19 Link* Stainless Steel
20 Extension Shaft* Stainless Steel
21 Locating Pin Stainless Steel
22 Orifice Button Arm* Stainless Steel
28 Pipe Plug Malleable Iron
30 Washer* Stainless Steel
33 Clevis* Stainless Steel
34 Lock Washer* Stainless Steel
35 Retaining Screw* Stainless Steel
36 Pipe Plug Malleable Iron
*RECOMMENDED REPAIR PART KIT
INSTALLATION
The installation of the valve is important for its
proper operation. Valves must be installed at the
system high points in the vertical position with the
inlet down. For pipeline service, a vault with freeze
protection, adequate screened venting, and
drainage should be provided. During closure, some
fluid discharge will occur so vent lines should extend
to an open drain area in plant service. A shut-off
valve should be installed below the valve in the
event servicing is required.
VALVE CONSTRUCTION
The standard Wastewater Air Release Valve body
and cover are cast iron. See the specific Materials
List submitted for the order if other than standard
cast iron construction. All internal components are
stainless steel with the exception of the orifice button
which is resilient. The general details of
construction are illustrated in Figure 2. The body (1)
is threaded for connection to the pipeline. The seat
(4) is threaded into the cast cover (2).
TABLE 1. LIST OF PARTS
FIGURE 2. WASTEWATER AIR RELEASE VALVE