A.R.I. D-060C User Manual
D-060 PN 16
D-060-C PN 16
D-062 PN 25
D-065 PN 40
Combination Air Valve for High Flow
D060.WTR.CAT.ENG05
Water Supply
Description
e D-060 series Combination Air Valve has the features of both an
air release valve and an air & vacuum valve.
e air release component is designed to automatically release small
pockets of air to the atmosphere as they accumulate along a pipeline
or piping system when it is full and operating under pressure.
e air & vacuum component is designed to automatically
discharge or admit large volumes of air during the lling or draining
of a pipeline or piping system. is valve will open to relieve
negative pressures whenever water column separation occurs.
Applications
- Municipal and industrial water conveyance systems.
D-060-C, D-062, D-065 - additional applications
- Water pipelines vulnerable to vandalism and/or water theft.
- Water systems found in remote areas.
- Water systems with pressure demands of 25 & 40 bar (D-062 &
D-065 respectively).
Operation
e air & vacuum component, with the large orice, discharges
air at high ow rates during the lling of the system and admits air
into the system at high ow rates during its drainage and at water
column separation.
High velocity air will not blow the oat shut. Water will lift the
oat which seals the valve.
At any time during system operation, should internal pressure of the
system fall below atmospheric pressure, air will enter the system.
e smooth discharge of air reduces pressure surges and other
destructive phenomena.
e intake of air in response to negative pressure protects the system
from destructive vacuum conditions and prevents damage caused
by water column separation. Air entry is essential to eciently drain
the system.
e air release component releases entrapped air in pressurized
systems.
Without air valves, pockets of accumulated air may cause the
following hydraulic disturbances:
- Restriction of eective ow due to a reduction of the ow area. In
extreme cases this will cause complete ow stoppage.
- Obstruction of ecient hydraulic transmission due to air ow
disturbances.
- Acceleration of cavitation damages.
- Increase in pressure transients and surges.
- Internal corrosion of pipes, ttings and accessories.
- Dangerous high-energy bursts of compressed air.
- Inaccuracies in ow metering.
As the system starts to ll, the combination air valve functions
according to the following stages:
1. Air in the pipeline is discharged by the valve.
2. Liquid enters the air & vacuum component, lifting the oat to its
sealing position.
3. Liquid enters the air release component of the valve, lifting the
oat and pushing the rolling seal to its sealing position.
4. Entrapped air, accumulating at peaks and along the system, rises
to the top of the air release valve, displacing the liquid in the valve's
body.
5. e oat drops, unsealing the rolling seal. e air release orice
opens and the accumulated air is released.
6. Liquid replaces the air released from the valve, buoying up the
oat and pushing the rolling seal back to its sealing position.
When internal pressure falls below atmospheric pressure
(negative pressure):
1. e oats will drop down, immediately opening the air &
vacuum and air release orices.
2. Air will enter the system.
Main Features
- Working pressure range:
D-060 0.2 - 16 bar
D-060-C 0.2 - 16 bar
D-062 0.2 - 25 bar
D-065 0.2 - 40 bar
- Testing pressure for the air valve is 1.5 times its working pressure.
- Maximum working temperature: 60°C.
- Maximum intermittent temperature: 90°C.
- All main ow cross-sections are equal or greater than the nominal
port area.
D-060
- Aerodynamic design enables high ow rates of air both at intake
and at discharge.
- Reliable operation reduces water hammer incidents.
- Dynamic design allows for high capacity air discharge while
preventing premature closure.
- Special orice seat design: bronze and E.P.D.M. rubber, assures
long-term maintenance-free operation.
- Screen protected outlet.
- e upper screen is protected with a protective cover.
Air Release Component
- Body made of high strength materials.
- All operating parts are made of specially selected corrosionresistant polymer materials.
- Large size air release orice:
• Dramatically reduces the possibility of obstruction by debris.
• Releases air at high ow rates.
• One size orice for a wide pressure range (up to 40 bar), achieved
by the rolling seal mechanism.
Valve Selection
Size Range: 1”- 10”
2" – 8" (D-065 only)
D-060, rated for 16 bar.
D-060-C, vandalism protected by a metal shell covering the air
release component, rated for 16 bar.
D-062, vandalism protected by a metal shell covering the air release
component, rated for 25 bar.
D-065, rated for 40 bar.
- ese valves are manufactured with anged ends to meet any
requested standard.
- e 1", 2” valves are also available with a threaded BSP or NPT
connection.
- Valve coating: Fusion bonded epoxy coating according to the
standard DIN 30677-2.
- Other coatings are available upon request.
- e air release component and the air & vacuum component are
available as separate units.
Note
For best suitability, it is recommended to send the uid chemical
properties along with the valve request.
Upon ordering, please specify: model, size, working pressure, thread
and ange standard and type of liquid.
Max. recommended design air discharge
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