Val-Matic 25 Air Release Valve (Simple Lever Type) - Manual (Page 3)

2
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
10 Float Arm* Stainless Steel
11 Orifice Button* Buna-N
12 Pivot Pin* Stainless Steel
13 Pin Retainer* Stainless Steel
14 Pipe Plug Iron
17 Float Retainer* Stainless Steel
21 Locator* Stainless Steel
34 Lock Washer* Stainless Steel
*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 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. VALVE COMPONENTS
FIGURE 2. Simple Lever AIR RELEASE VALVE
CAUTION
Install valve with “INLET” port down or
leakage will occur.