Val-Matic 50 Series Air Release Valve (Compound Lever Type) - Manual (Page 3)

2
CAUTION:
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 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. AIR RELEASE VALVE PARTS LIST
x
ITEM DESCRIPTION MATERIAL
1 Body
Cast Iron
2 Cover Cast Iron
3 Lever 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
21 Locating Pin Stainless Steel
22 Orifice Button Arm* Stainless Steel
30 Washer* Stainless Steel
33 Clevis* Stainless Steel
34 Lock Washer* Stainless Steel
*RECOMMENDED REPAIR PART KIT
Install valve with "INLET"
port down or leakage will
occur.
FIGURE 2. Compound Lever AIR RELEASE VALVE