TLV VA 1, VA 3, VA 4, VA 5, VC2 User Manual
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AIR VENTS
Pamphlet M3600
Free Float for Venting Air & Gas from Liquid Piping
Free Float for Venting Air & Gas from Liquid Piping
X-element for Venting Air & Gas from Steam Systems
X-element for Venting Air & Gas from Steam Systems
VAS VA Series VS1A
LA Series
SA3 VC Series VS1C
No failure-prone levers or
hinges. Only one moving part,
the free float, eliminates
concentrated wear and provides
long, maintenance-free service
life.
● Rapid Initial Air Vent
VAS
VA1/VA3/VA4/VA5
● Automatic Air Vent
VC2/VC3/VC4
Precision-ground float with
three-point seating provides the
tightest seal at high water level.
● Rapid Initial Air Vent
VS1A
● Automatic Air Vent
VS1C
What is the X-element?
A multi-diaphragm valve mechanism filled
with a thermoliquid which opens and closes
the vent at a temperature approximately
22 ºC less than saturated steam temperature,
allowing the discharge of any air or gas.
*
* Do not use for toxic, flammable or otherwise hazardous fluids
Air Vent
Class
Rapid Initial
Air Vent
Water,
Hot Water
Special Fluids
(Non-toxic and
Non-flammable)
Steam
Automatic
Air Vent
Automatic
Air Vent
* For air at 20 。C under atmospheric pressure.
Pressure differential is 0.1 MPa for rapid initial air vents, maximum operating pressure for automatic air vents.
* For air at 20 。C under atmospheric pressure.
Water,
Hot Water
Special Fluids
(Non-toxic and
Non-flammable)
Vertical
Piping
Vertical
Piping
0.01 – 2.1
0.01 – 0.3
0.1 – 1.0
VAS (20mm)
VAS (40mm)
180
500
1400
3200
5600
11000
270
5.4
9.2
25
90
380
170
130
VA1
VA3
VA4
VA5
VS1A
LA13L
SA3-3
SA3-10
VC2
VC3
VC4
VS1C-10
VS1C-21
0.05 – 0.5
0.1 – 0.6 90
0.1 – 1.0
0.01 – 1.0
0.01 – 2.1
Vertical
Piping
1900
LA21
Angle 0.01 – 1.3
0.01 – 2.1
200
235 2000
Medium
Piping
Direction
0.01 – 1.0 100
150
100
150
Operating
Pressure
Range
(MPaG)
Maximum
Operating
Temperature
(ºC)
Model
Medium
Piping
Direction
Operating
Pressure
Range
(MPaG)
Maximum
Operating
Temperature
(ºC)
Model
Brass
Cast Iron
Cast Stainless
Steel
Brass
Bronze
Cast Iron
Cast Stainless
Steel
Cast Stainless
Steel
Body
Material
Air Vent
Class
Body
Material
Maximum
Venting
Capacity
(
/min)*
Maximum
Venting
Capacity
( /min)*
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