User Manual

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 RELEAS E VALVE

CAUTION

Install valve with “INLET” port down or

leaka

e will occur.