Cla-Val 38VB/AR Series - Manual (Page 2)

VALVE CONSTRUCTION FLANGE STYLE
Vacuum breaker valve bodies are heavy cast iron. The seat & plug of the
flange style valves are bronze Fig 1. The plug of the flange style is the
only moving part when the valves open. The springs are annealed an
polished for many years of compression cycle life. see table A&B for
materials.
Materials & Part names are the same for FLG Styles: Fig. 1, Fig. 3, &
Fig. 4. Specify Fig. No. and size when ordering parts for series 38VB
flanged styles.
Part Name
Body
Seat
Plug
Spring
Bushing
Seat Retaining Screws
Gasket
Ring Plate
Bolt and Nut Assembly
Bird Screen
Threaded Set Collar
Hood Assembly
Hood Retaining Screws
Hood Washer
Spring Retainer
Detail No.
1
2
3
4
5
6
8
10
11
12
18
23
24
25
36
Material
Cast Iron
Bronze with
Buna-N
® Seal
Bronze
Stainless Steel
Bronze
Stainless Steel
Compressed
Non-Asbestos Fiber
Steel
Steel, Zinc Plated
Stainless Steel
Steel, Zinc Plated
Steel
Steel, Zinc Plated
Steel, Zinc Plated
Steel
* Not included in 2” & 2.5” Size
Table A Parts List
Valve Construction Threaded Style
Threaded style vacuum breaker 1/2”-3” size, all internal
parts,are stainless except valve seat is Buna-N
® . The float and
guide are the only moving parts assuring long life with mini-
mum maintenance. See Table B for standard material details.
Detail No.
1
2
3
4
5
6
7
8
9
14
10
* Recommended Spare Parts
Table B Parts List
Part Name
Body
Cover
Baffle
Seat
Float
Gasket
Cover Bolt
Retaining Screw
Guide Bushing
Pipe Plug
Spring*
Material
Cast Iron
Cast Iron
Ductile Iron
Buna-N
Stainless Steel
Non-Asbestos
Alloy Steel
Stainless Steel
Stainless Steel
Iron
Stainless Steel
Fig.4
2
8
4
7
6
3
5
10
20
9
1
14
AIR
IN
OPEN
CLOSED
THREADED
STYLE
FIG. 2
STANDARD
For
Sewage
ADJUSTABLE
Valve Shown in
Open Position