Val-Matic Wastewater Combination Air Valve - Manual (Page 4)

Option Backwash Assembly
Refer to the Figure 3 for the correct piping
arrangement. Please note the each Kit contains
extra fittings such as reducer bushings that may not
be needed for your valve. The fittings should be
installed with a standard pipe compound such as
Oatey White Thread Sealant (supplied) or sealing
tape. The quick disconnect fittings (Air King
Universal Couplings) are designed for easy push
and turn connections to a clean water source.
Backwash Accessory Kits
Type Inlet Backwash Kit Valve Models
1” SPK-301ABW 801ABW
2” SPK-301ABW 802ABW
3” SPK-303ABW 803ABW
Comb.
Air
Valve
4” SPK-804BW 804BW
4
WARNING: Wear safety glasses to look into
the valve outlet after installation.
Released fluid can cause injury
.
MAINTENANCE
The Wastewater Combination Air Valve should be
scheduled for regular inspection and backwash on a
monthly basis. Based on experience in service, a
more frequent backwash regimen may be desirable
to minimize leakage.
Inspection: Periodic inspection to verify operation
can be performed. The valve should not leak fluid at
any connection or through the outlet. If there is
leakage through the outlet, perform a backwash
procedure on the valve. Also check to see that air is
being released by cracking open the lower drain
valve (B). If a large amount of air is released from
the drain valve, then the main valve may be clogged
and a backwash procedure should be performed.
Lubrication: The Wastewater Combination Air
Valve is a self-contained automatic valve and does
not require and lubrication to enhance its operation.
Tools: No special tools are needed to maintain or
repair the valve. The valve should be equipped with
backwash valves and hoses for ease of
backwashing.
Backwash Procedure: In order to properly
backwash the valve, a 1" clean water supply of at
least 30 psi is needed. This supply should be
connected to the rubber hose with quick disconnect
couplings as provided with the wastewater valve and
shown in Figure 3.
1. Pipe valve B to a drain prior to backwashing.
2. Close inlet valve A.
3. Open drain valve B.
4. Connect water supply to C/D and supply water
for 3 minutes to flush seat and mechanism area.
5. Additional washing of seat area can be
accomplished by placing the water supply over
the discharge into the Outlet port.
6. Close valves D and B.
7. Slowly open valve A to place back in service.
FIGURE 3. BACKWASH HARDWARE