Val-matic Wastewater Air/Vacuum Valve Manuel d'utilisateur télécharger pdf (Page 3)

INSTALLATION

The installation of the valve is important for its

proper operation. The 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 for

in-plant installations. A shutoff valve should be

installed below the valve to allow regular

maintenance.

VALVE CONSTRUCTION

The standard Wastewater Air/Vacuum Valve

body and cover are cast iron. See specific

Materials List submitted for the order if other

than standard cast iron construction. All internal

metal components are stainless steel with the

exception of the seat, which is resilient. The

general details of construction for 1” through 3”

valves are illustrated in Figure 2. The general

details of construction for 4” through 8” are

illustrated in figure 3. The body (1) is threaded

or flanged for connection to the pipeline.

Table 1. Wastewater Air/Vacuum Valve Parts

List

Figure 2. 1”-3” Wastewater Air/Vacuum Valve

Figure 3. 4”-8” Wastewater Air/Vacuum Valve

Item

Description Material

1 Body Cast Iron

2 Cover Cast Iron

4 Seat* Buna-N

5 Upper Float* Stainless Steel

5L Lower Float* Stainless Steel

6 Gasket* Non-Asbestos

7 Cover Bolt Alloy Steel

8 Retaining Screw Stainless Steel

9 Guide Bushing* Stainless Steel

15 Cushion* Buna-N

20 Guide Shaft* Stainless Steel

27 Washer* Stainless Steel

28 Pipe Plug Malleable Iron

*Recommended Spare Part

CAUTION: Install valve with “INLET”

port down or leakage will

occur.

1 2 3 4 5 6

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Val-matic Wastewater Air/Vacuum Valve Manuel d'utilisateur Page 3

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