Product
Air Release&Vacuum Breaker(Air/Vacuum)Valve
Combination Air Release&Vacuum Breaker(Air/Vacuum)Valve
Air Release Valves
Additional Option
Vacuum Breaker Valve
Surge Relief Valves
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Untitled Document
Combination Air Release & Vacuum Breaker(Air/Vacuum)Valve

Combination Air Release & Vaccum Breaker(Air/Vaccum) Valve download You can download the product catalog.(CAV)
Pressure vacuum relief valv

Benefits
  - Pressure & Vacuum relief funciton
- Anti-Surge & Anti-Shocks
- Surge and waterhammer protection
- Liquid overflow protection
- Provides high capacity venting for pipeline protection
- Increasing of pump efficiency
- Less system energy
- Maintenance free
- Release small pockets under operation pressuress

Pressure vacuum relief valve
Introduction  
  Combination air valves are normally installed at high points where air would naturally rise ahead of the incoming liquid during filling and collect during operation and/or where negative pressure first occurs during draining.
The large (air & vacuum) and the small (air release) orifices are both open during filling with the majority of the air is passes through the large orifice.
The rate at which air is discharged is a function of the differential pressure across the air & vacuum valve.
During filling, incoming water compresses the air in the empty pipe until the pressure differential across the air valve is sufficient that air is discharged at the same volumetric rate as water is entering the pipe.
After all the air has been purged, liquid enters the valve and lifts the floats and closes both orifices.
While the large orifice remains closed, the small orifice reopens as necessary to release any air that collects in the valve after it has closed. Should the internal pressure fall below atmospheric, both orifices open to allow air to flow through the valve into the system at the same volumetric rate at which the liquid is draining thus avoiding critical vacuum and damage to the pipe.

CAV-D MEDEL
Pressure vacuum relief valve Dimension Table
 
Unit = mm
SIZE
2"
3"
4"
6"
8"
10"
10"
12"
N.D
50
80
100
150
200
250
300
350
ΦA
170
210
260
340
460
565
635
760
H
340
370
380
435
494
750
845
949
L
305
330
350
383
420
473
498
553

Note: Standard flange connection is JIS 5K and others are available on request.

Materials of Construction
 
No.
Description
Material
Spec. 1
Spec. 2
Spec. 3
1
   Air Release
1-1
   Body
A216-WCB
B148-C95800
A351-CF3M
1-2
   Float & Disc
HDPE
HDPE
HDPE
1-3
   Seat
NBR
NBR
NBR
2
   Air/Vacuum Valve Release
2-1
   Body
A216-WCB
B148-C95800
A351-CF3M
2-2
   Cover
SS400
B148-C95800
A351-CF3M
2-3
   Ball
A240-316L
Monel-400
A240-316L
2-4
   Gasket
NBR
NBR
NBR

NOTICE !!
Air Release Valve & Vacuum Breaker Valves can be add another function such as Anti-surge, pressure/vacuum relief in according to operation condition. In this case, You can make good choice PROSAVE's verious model.
Pressure vacuum relief valve
Dimension Table
 
Unit = mm
Model
CAV-S
-04
CAV-S
-06
CAV-S
-08
CAV-S
-10
CAV-S
-12
CAV-S
-14
N.D
100
150
200
250
300
350
ØA
448
520
650
760
840
950
H
375
450
550
820
920
1050

Note: Standard flange connection is JIS 5K and others are available on request.
Materials of Construction
 
No.
Description
Material
Spec. 1
Spec. 2
Spec. 3
1
Body
A216-WCB
B148-C95800
A351-CF3M
2
Float & Disc
HDPE
HDPE
HDPE
3
Seat
NBR
NBR
NBR

NOTICE !!
Air Release Valve & Vacuum Breaker Valves can be add another function such as Anti-surge, pressure/vacuum relief in according to operation condition. In this case, You can make good choice PROSAVE's verious model.