These soft start valves allow a gradual increase of the
pressure in pneumatic systems. The pressure increases slowly
according to the screw-adjustable regulation until it reaches
half of the set value, then it increases rapidly. The valve poppet
shifts slowly and securely to the open position to prevent
sudden and unsafe movements of the pneumatic components
in the system.
The Series MX has been realized to offer a multi-sector solution that
guarantees saving in terms of installation time, space and costs.
Allow for a safe, gradual
pressurization of the
pneumatic system
from start-up
Screw adjustment of
the timing delay which
regulates inlet pressure
to 50% of its value before
full pressurization
Optional pressure switches
are available on request
Part Number
A
B
C
G
I
M
R
S
T
MX3-3/4-AVTF
3/4
1/8
3.524
2.953
2.992
1.772
4.016
2.264
1.752
MX3-1-AVTF
1
1/8
3.524
2.953
2.992
1.772
4.016
2.264
1.752
Coding Example & Flow Diagrams
(Click Image to Enlarge)
Coding Example
MX
3
3/4
AV
TF
MX
Series
3
Size
3 = 3/4" - 1" body size
3/4
Ports 3/4 = 3/4" 1 = 1"
AV
Soft Start Valve
TF
Port TF = NPTF Blank = BSPP thread ports
(Click Image to Enlarge)
Flow Diagrams
Constant "K" on the above graphs indicates the number of turns,
(open from dead bottom closed), of the regulation screw required
to obtain the required pressurization time with an inlet pressure
of 87 psi. Variations of the inlet pressure can cause deviations of
the pressure time by ± 20%.
K = t/V where: V = volume of the downstream system in Liters ; t
= desired pressuring time in seconds
Example:
V = 5 Liters
t = 16 seconds
K = 16/5 = 3.2
Using in the graph this value K, the number of turns of the
regulation screw will be approx. 1.8 turns open from dead bottom
closed.
Filters Series MX - Materials
Parts
Materials
1 = Body
Aluminium
2 = Covering
Polyamide
3 = Valve holder plug
Polyamide
4 = Lower spring
Stainless steel
Seals
NBR
Technical Specifications
Construction
modular, compact, poppet-type
Materials
see TABLE OF MATERIALS
Ports
3/4" - 1" NPTF
Weight
0,65 kg
Mounting
in-line,
wall-mounting (by means of clamps)
Operating temperature
-5°C - 50°C at 16 bar (with the dew point of the fluid), (23°F - 122°F @ 232 psi, up to 140°F MAX at 145 psi)
50°C - 60°C at 10 bar (with the dew point of the fluid)
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