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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.
CAUTION
Install valve with "INLET" port down or
leakage will occur.
VALVE CONSTRUCTION
The standard 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.
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).
The general
FIGURE 2. Compound Lever AIR RELEASE VALVE
ITEM
DESCRIPTION
1
Body
2
Cover
3
Lever Frame*
4
Seat*
5
Float*
6
Gasket*
7
Cover Bolt
8
Retaining Screw*
10
Float Arm*
11
Orifice Button*
12
Pivot Pin*
13
Retaining Ring*
14
Pipe Plug
17
Float Retainer*
18
Lock Nut*
19
Link*
21
Locating Pin
22
Orifice Button Arm*
30
Washer*
33
Clevis*
34
Lock Washer*
*RECOMMENDED REPAIR PART KIT
TABLE 1. AIR RELEASE VALVE PARTS LIST
x
2
MATERIAL
Cast Iron
Cast Iron
Stainless Steel
Stainless Steel
Stainless Steel
Non-Asbestos
Alloy Steel
Stainless Steel
Stainless Steel
Buna-N
Stainless Steel
Stainless Steel
Iron
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
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