Cla-Val 34WW Series - Manual (Page 2)

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Air V
alves
CLA-VAL
19
12
13
10
20
17
5
28
14
4
7
2
11
22
34
18
3
33
35
1
21 8 14
30
6
Flow
Sensitive
Skirt
Valve
D
Valve
E
Valve
B
C
Valve
A
RUBBER HOSE
WITH QUICK
DISCONNECT COUPLING
ON EACH END.
Part No. Part Name Material
1 Body Cast Iron ASTM A126, Class B
2 Cover Cast Iron ASTM A126, Class B
3 Leverage Frame Stainless Steel T304, ASTM A240
4 Seat Stainless Steel T303, ASTM A276
5 Float Stainless Steel T304, ASTM 240
6 Gasket Lexide NK-511 (non-Asbestos)
7 Cover Bolt Alloy Steel ASTM A449, Grade 5
8 Retaining Screws Stainless Steel T303, ASTM A276
10 Float Arm Stainless Steel T303, ASTM A276
11 Orifice Button Stainless Steel & Buna-N ®
12 Pivot Pin Stainless Steel T303, ASTM A276
13 Retaining Ring Stainless Steel PH 15-7 Mo
14 Pipe Plug Carbon Steel
17 Float Retainer Stainless Steel, ASTM T18-8 A276
18 Lock Nut Stainless Steel T304, ASTM A276
19 Link Stainless Steel T304, ASTM A240
20 Guide Shaft Stainless Steel T304, ASTM A269
21 Location Pin Stainless Steel T420
22 Orifice Button Stainless Steel T303, ASTM A276
28 Pipe Plug Carbon Steel
30 Washer Stainless Steel T18-8, ASTM A240
33 Clevis Stainless Steel T304, ASTM A240
34 Lock Washer Stainless Steel T304, ASTM A240
35 Retaining Screw Stainless Steel T304, ASTM A240
BACKFLUSHING PROCEDURES
Backflushing steps are basically the same for all sizes and
styles of wastewater Air Release, Air and Vacuum and
Combination Valves and this can be accomplished in two
ways.
1. With clean water, that must be 15 PSI higher than the
pressure in the force main, the valve may be flushed clean
back into the force main. Flush back into the force main by
connecting hose C to valve D. Next open valve A and flush
for 2-3 minutes thru D. Next close D and switch hose C to
E and flush for one minute. After flushing close valve A.
Disconnect hose C and vent pressure inside the Air Valve
thru valve D. Next remove cover bolts (det 7.) remove top
cover (det 2) for visual inspection and scrape out any
grease. Use care to remove the cover and the cover gas-
ket (det 3) may be re-used many times. Reinstall cover
(det. 2) and slowly open valve A.
2. With clean water that is not 15 psi higher pressure than
the force main, backflush thru valve B into an atmospheric
collection tank. Follow the same procedure as above
except close valve A and open valve B. After flushing
remove cover to inspect interior and replace cover same
as above. Then close valve B, open valve A and the waste
water valve is back in service.
SERIES 34-WWBK
Waste Water Air Release Valve with Backwash Kit