Product Overview

Automatic air vent and shut-off valve
for solar systems
250 series
Function
Automatic air vents are used in the closed circuits of solar heating systems. They allow air contained
in the fluid to be released automatically during the filling process, through a valve operated by a float
in contact with fluid in the system.
The shut-off valves are used in combination with the automatic air vents to isolate them after filling
the circuit of solar heating systems.
These series of products have been specially made to work at high temperatures with a glycol medium.
.
Product range
Code 250041A Automatic air vent for solar systems size 1/2” M NPT
Code NA29284 Shut-off valve for automatic air vent size 1/2” M NPT x 1/2” F NPT
Technical specifications of 250 series valve
Materials: - body: brass chrome plated
- cover: brass chrome plated
- control spindle: stainless steel
-
float: high resistance polymer
- seals: EPDM
snoitulos locylg ,retaw:muideM
%05:locylg fo egatnecrep .xaM
Working temperature range: -20 to 360ºF (-30 to 180ºC)
Max. working pressure: 150 psi (10 bar)
Max. discharge pressure: 75 psi (5 bar)
Connection: 1/2” M NPT
Technical specifications of valve NA29284
Materials: - body: brass chrome plated
- ball: brass chrome plated
- seals:
P.T.F.E.
snoitulos locylg ,retaw:muideM
%05:locylg fo egatnecrep .xaM
Working temperature range: -20 to 360ºF (-30 to 180ºC)
Max. working pressure: 150 psi (10 bar)
Connection: 1/2” F x 1/2” M NPT
Dimensions Dimensions
A
1/2”
B
4”
C
Ø 2
1/8”
D
1/2”
C
B
D
A
Code
250041A
Weight (lb)
0.7
A
1/2”
B
2 7/8”
C
1/2”
D
1 1/2”
Code
NA29284
Weight (lb)
0.5
A
A
B
D
C
T
max
= 180°C / 360°F
P max = 10 bar / 150 psi
CALE FFI