HomeMy WebLinkAboutTab 1 - Air Release ValveA.R.I. FLOW CONTROL ACCESSORIES Ltd.EnC-S050IND-09S-050 Industry
Description
The automatic air release valve discharges accumulated air from
the system while it is under pressure.
The presence of air in water systems can reduce the effective
cross sectional flow area resulting in increased pressure loss
and deceased flow.
Unwanted air may also cause water hammer and metering
inaccuracies, while hastening corrosion.
In spite of its compact and light weight structure, the S-050 air
release valve has a 0.014 sq.in orifice that enables it to discharge
air at high flow rates and is not exposed to obstruction by debris.
Operation
The automatic air release valve releases entrapped air from
pressurized systems.
Without air valves pockets of accumulated air may cause
the following destructive phenomena:
- Obstruction to effective flow and hydraulic conductivity of the
system along with a throttling effect similar to a partially closed
valve. In extreme cases this will cause complete flow stoppage.
- Accelerate cavitation damages.
- High-pressure surges.
- Accelerate corrosion.
- Danger of a high-energy burst of compressed air.
The valve functions while the system is under pressure, according
to the following stages:
1. Liquid fills the system and enters the valve.
2. The float rises and rolls the rubber sealing band to its sealing
position.
3. Entrapped air, which accumulates at peaks along the system,
rises to the top of the valve, which in turn displaces the liquid
in the valve's body.
4. The float descends, peeling the rolling seal, the orifice opens,
and the accumulated air is released.
5. Liquid re-enters the valve and the float rises, rolling the rubber
sealing band to its sealing position.
Automatic Air Release Valve “SEGEV”
Note: Automatic air release valves are designed to release air as
it accumulates at peaks of pressurized systems. They are not
normally recommended for vacuum protection to valve large
volumes of air, because of the inherently small orifices. For this
purpose air & vacuum air valves have much larger orifices.
However, automatic air release valves will permit air to re-enter
under vacuum conditions. If this is not desirable, specify vacuum
check valves.
Main Features
- Working pressure range: 0.2-16 bar Testing pressure: 25 bar
- Working Temperature: 600 C.
- Maximum working temperature for short time period: 900 C.
- The larger than usual orifice enables it to discharge air at higher
flow rates than other automatic air release valves of its kind.
- The enlarged orifice is not exposed to obstruction by debris.
- The valve's design rolling seal mechanism, is less sensitive to
pressure differentials than a direct float seal. It accomplishes a
comparably large orifice for a wide pressure range
(up to 16 bar).
- Light weight, simple and reliable structure.
- The body is made of high strength composite materials and all
operating parts are made of specially selected corrosion resistant
materials.
- A disharge outlet enables removal of excess fluids.
Valve Selection
- Available in male threaded sizes: 1/2", 3/4", 1" - BSP/NPT
- S-050 V -with vacuum check valve. The valve is available as a
valve that will only release air from the system and will not admit
air to the system when negative pressure conditions occur. This
characteristic is obtained by adding a check valve to the air outlet.
S-050 A.R.I. FLOW CONTROL ACCESSORIES Ltd.
A.R.I. FLOW CONTROL ACCESSORIES Ltd. www.arivalves.com ari@ari.co.il Tel: 972-4-6761988
A.R.I. FLOW CONTROL ACCESSORIES Ltd. reserves the right to make product changes without prior notice. To insure receiving updated information on parts specifications, please call the export dept.
at the A.R.I. factory. A.R.I. FLOW CONTROL ACCESSORIES Ltd. shall not be held liable for any errors. All rights reserved.
PARTS LIST AND SPECIFICATION
No. Part Food Ind., Desalination Mines Oil Fuel Hot Water Indostry
1. Body PA/PP PA PA PA PVDF
2.Drainage Outlet PP PP PP PP PP+PA
3.Rolling Seal EPDM Viton BUNA-N Viton Viton
4.Clamping Stem PP / PA PP / PA PP PA ASA
5.Float Foamed PP Foamed PP Foamed PP Foamed PP Foamed ASA
6.O-Ring EPDM Viton BUNA-N Viton Viton
7. Base STST 316/ 317/PP/PA STST 316/ 317/PP/PA STST 316/PP STST 316/PA/Brass PVDF
8.Strainer PA PA/-- PA PA -
PP=Polypropylene PA=Reinforced Nylon STST=Stainless Steel
For best adjustment, it is recommended to send the fluids chemical properties along with the requirement.
C
2
3
4
5
6
7
8
A
B
1
Flow Rate [m3/h]
AUTOMATIC AIR DISCHARGE FOR S-050-V
Differantial Pressure [Bar]0
20
2
40
1/4” 1/8”
60 80 100
4
6
8
S-050-V
One Way Check Vave
2
AUTOMATIC AIR DISCHARGE
0
50 200
10
20
100 150Differantial Pressure [Bar]Flow Rate [m3/h]
DIMENSIONS AND WEIGHT
Base Dimensions mm Weight Orifice Are
Material A B internal C externa Kg. mm
2
PP / PA 87 140
1/8”18 0.3 12
BRASS 87 140
1/8”18 0.65 12
STST 87 140
1/8”18 0.65 12
PVDF 87 140
1/8”18 0.4 12
S-050 V 101 140 0.4 12