| Q1.
Are your cylinders available in non-standard strokes?
Yes, we can make a cylinder to order in any stroke
length you require up to a design maximum.
|
|
| Q2.
What is the average life expectancy of the seals
in your cylinders?
Approximately: 3000 km in lubricated air medium.
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|
| Q3.
How can I slow down my cylinder?
By using flow regulators or speed controllers
to control the exhausting air from the cylinder
thus reducing the speed. |
|
| Q4.
What is the smallest diameter cylinder you offer?
|
|
| Q5.
Can a standard cylinder be operated in the slow
speed range of 2mm-5mm / second?
At very slow speeds hydro-pneumatic control is
recommended. |
|
| Q6.
Can I use a standard cylinder on low pressure
hydraulics?
No, even at low pressure, pneumatic seals can
be fatigued by transient hydraulic shocks fed
back through the system. |
|
| Q7.
Do cylinders and valves require lubrication?
Nucon standard cylinders and valves are designed
for lubricated air service. But Nucon can offer
cylinder & valves for non lubricated service
on request. Consult out Tech-Service for your
requirement. |
|
| Q8.
What is the largest diameter cylinder Nucon can
offer?
Nucon can offer max dia 18" cylinder. |
|
| Q9. What is the longest stroke we can use on a particular
cylinder?
This depends on mounting and loading style. This
needs to be calculated but as an estimate, 15
x bore diameter is a good guide. |
|
| Q10. Do reed switches come standard with magnetic cylinders?
No, they need to be ordered separately.
|
|
| Q11. What force can a cylinder exert?
This depends on the air pressure applied to the
cylinder piston. |
|
| Q12. What is the maximum temperature at which Nucon
cylinders can operate?
The maximum for cylinders with standard seals
is 80C. For cylinders with Viton seals it is 120C.
|
|
| Q13. Which range of 3/2 valves can also be used as
"Normally closed" or "Normally open"?
Most mechanical, manual and pilot operated spool
valves but use purpose designed "normally open"
solenoid spool valves. |
|
| Q14. I want to stop a cylinder at some point in its
stroke - how can I do this?
You can use a 5 port, 3 position valve which has
a closed centre position. This will stop the cylinder
in a mid position however the positional accuracy
of using this method is not good. Leakages in
the system and the compressibility of the air
can cause the cylinder to creep. To eliminate
these problems either a piston rod brake or hydro-pneumatic
system is recommended. |
|
| Q15. How can I detect when my cylinder has reached
the end of its stroke when I cannot use electrical
proximity switches?
You can use end of stroke sensor fittings which
detect when all of the pressure in the cylinder
has exhausted. This is not a positive system as
a cylinder jamming mid stroke will allow the pressure
to decrease so that the sensor fitting, thinking
it is at stroke end, will give an output signal.
Positive sensing can be done using a trip valve
at the end of the cylinder stroke or by pneumatic
output reed switches which work off the magnet
in the piston like electrical reed switches.
|
|
| Q16. I have a competitors product part number, how
do I find the equivalent Nucon part number?
We have lists of equivalent product numbers for
many of the pneumatics industry manufacturers.
Please contact us and we'll be happy to advise
you of the most suitable equivalent for your application.
When selecting an equivalent there are many features
that may have to be taken into consideration these
include: function, conformity to a standard, port
connections, envelope size, orientation, performance,
duty, materials of construction, pressure rating
and power rating. |
|
| Q17. Do you offer cylinders that are interchangeable
with other makes or brands?
Yes, Our RM/8000 cylinders are compatible to ISO6431
/ VDMA24562 standards. |
|
| Q18. How can I obtain four fixed positions using standard
cylinders?
Use two cylinders of different strokes, joined
back-to-back or rod-to-rod and operate by individual
control valves. |
|
| Q19. If a cylinder is cycling at a very high rate with
a large mass, would the end of stroke cushioning
be sufficient to stop the load?
Only for a limited period. We recommend the use
of external "shock" absorber's. Please contact
us for help with particular applications.
|
|
| Q20. Why does my solenoid valve stay in the operated
position even when the electrical power has been
turned off?
You may have a solenoid with a locking manual
override that has not been reset from the locked
on position "1". These overrides can be used during
set up or fault finding of an application. In
normal operation the override must be set to "0".
|
|
| Q21. Why does my solenoid valve not operate when connected
to a supply at the test bench?
If this is a pilot operated solenoid valve, a
combination of low pressure and open outlet ports
may cause too large a pressure drop within the
valve resulting in weak pilot pressure. Connect
the outlets to a safely mounted test actuator
or pressure gauges. |
|
| Q22. Do Viton or fluorocarbon elastomers give Nucon
products a higher temperature rating than the
standard specified in the catalog?
Some products such as fittings assembled with
Viton seals have a higher temperature specification.
Generally however Viton or fluorocarbon elastomers
are used in applications where the media being
controlled is incompatible with standard nitrile.
While Viton seals are resistant to higher temperatures,
there are many other materials used in the composition
of our products that determine the final temperature
specification. |
|
| Q23. How can I obtain three fixed positions using standard
cylinders?
Use two cylinders of the same stroke, joined back-to-back
or rod-to-rod and operate by individual control
valves. |
|
| Q24. What is the difference between "Static" end "Dynamic"
spool technology?
Static seals are held by the sleeve assembly and
are stationary as the spool moves. Dynamic seals
are fixed to the spool assembly and move with
it. |
|
| Q25. What is meant by "integral pilot" and "internal
bleed"?
Integral pilot is a pressure supply ducted from
the main valve inlet to a pilot solenoid. Internal
bleed refers to the release of internal pilot
pressure to cause a valves operation. Usually
sensitive mechanically or air pilot operated valves
with light operating forces. |
|
| Q26. What is the response time of solenoid valves?
Response time depends on the type of valve. Typical
response times for Nucon solenoid valves are between
20ms and 60ms depending on the valve type.
|
|
| Q27. What is the minimum operating pressure for solenoid
valves?
The minimum operating pressure depends on the
type of valve. Typical minimum operating pressures
for Nucon solenoid valves are 2 to 4 bar depending
on type of valve. |
|
| Q28. My solenoid valve switches intermittently or fails
to switch at all, why?
There are many reasons why solenoid valves do
not switch properly. The following are some of
the most common: Contaminated compressed air,
voltage drops, current drops, incorrect coil,
insufficient air pressure, environmental temperature
(hot or cold). |
|
| Q29. What is the life expectancy of Nucon valve products?
Nucon valves are tested for 1 million cycle operation
to approve the design. |
|
| Q30. I have a valve that constantly leaks out of the
exhaust - do I need a new valve?
First remove the cylinder hose on the port of
the valve that feeds the leaking exhaust. If the
air is flowing out of the pipe from the cylinder
then the cylinder seals require attention. If
the air is coming from the valve then the valve
requires attention. |
|
| Q31. What is the minimum operating pressure for pilot
operated solenoid valves?
2.0 bar minimum and depends on the specific valve
type and function, single solenoid, double solenoid
or 3 position. Please contact us for details.
|
|
| Q32. How do I connect the appropriate wires to a standard
solenoid valve connector ?
Wire the DIN plug so that the conductors +V and
0V for d.c. or the Live and Neutral for a.c. are
connected to the parallel terminals. Polarity
must be observed when wiring to a d.c. plug fitted
with an LED indicator. Also when fitting diode
suppression to d.c. coils (banded end of the diode
to +V). The earth conductor connects to the third
terminal, this is essential for all unsafe voltages.
|
|
| Q33. Does Nucon offer any instrument products?
Yes, We can offer from IMI-Norgren range.
|
|
| Q4. Which Nucon regulators provide extremely accurately
controlled outlet pressure?
We can offer precision regulators from IMI-Norgren
range, Please contact our marketing services and
dealers for more information. |
|
| Q35. Does Nucon offer a pressure regulator suitable
for supply pressures up to 30bar?
A We can offer precision regulators from IMI-Norgren
range, Please contact our marketing services and
dealers for more information. |
|
| Q36. Does Nucon provide pressure regulators for use
with CO2 ?
Our pressure regulators typically use nitrile
elastomers. This seal material tends to deteriorate
when used in CO2 applications. We recommend the
use of neoprene elastomers for CO2 applications.
Contact us for your specific requirement.
|
|
| Q37. Can standard pressure regulators be used with
nitrogen gas?
Yes, provided that the nitrogen gas is dry and
within the inlet pressure specification. All inert
gases including nitrogen, argon, and in some cases
helium, can be used with our standard pressure
regulators with no adverse effects. |
|
| Q38. Does Nucon produce a pressure regulator suitable
for use with natural gas or sour gas?
No, our pressure regulators are not suitable for
use with explosive gases. |
|
| Q39. Does Nucon offer specially cleaned and assembled
pressure regulators for use with oxygen?
We have a selection of specially prepared and
assembled products including non-relieving pressure
regulators suitable for use with oxygen. Contact
us for more details. |
|
| Q40. Does Nucon produce pressure regulators for water
or other liquids?
We can offer from IMI-Norgren range. Contact us
for more details. |
|
| Q41. My regulator is making an unusually loud humming
or whistling sound. What is it and how can it
be prevented?
Occasionally an application can produce a
demand frequency or flow characteristic that is
in the critical band of the pressure regulator's
valve assembly and feedback system causing it
to oscillate slightly. Sometimes altering the
set pressure or changing the downstream volume
will stop the problem. The usual solution however
is to change the regulator characteristics by
replacing the control spring with one of a higher
pressure rating or changing the diaphragm to a
stiffer material. |
|
| Q42. What is the difference between an Oil-Fog and
a Micro-Fog Lubricator?
Oil fog has droplet size of greater than 2. Micro-fog
has droplet size of less than 2, has finer control
and the oil will travel greater distances.
|
|
| Q43. What oil is recommended for use with Nucon pneumatic
equipment?
We recommend using a general purpose mineral oil
of ISO 3448 Viscosity Number of 32 or 46, for
cylinders and valves. |
|
| Q44. My pressure regulator leaks excessively from the
relief hole in the bonnet. Why does this occur
and how do I fix it?
If the main valve seat is damaged or the poppet
seal is dirty or cut, air will be passing when
the valve is closed and the excess pressure continuously
relieved. A continuous leak even when the pressure
regulator is flowing air may be due to similar
damage to the relief seat. A large continuous
leak may be due to a split diaphragm. To repair
the fault dismantle the regulator, clean and inspect
the main seat, the relief seat and the diaphragm.
Renew the damaged parts as appropriate.
|
|
| Q45. The Filter I use for my Airline equipment is only
40 microns. Is this suitable?
A 40 micron filter is standard and is generally
OK for most pneumatic valves and cylinder applications. |
|
| Q46. What size filter regulator (FRL) should I use?
Is bigger, better?
FRL equipment should always be determined by:
the required pressure, flow, and regulation range
and not pipe size. Often correctly sized FRL units
will have port sizes smaller than the pipe work
in which it is installed. |
|
| Q47. What types of fittings do you offer?
We offer Push-on fitting to use with Nucon brand
polyurethane tubes. |
|
| Q48. My filter/regulator is leaking air and I am unable
to adjust it. What do I do?
Check the following: Screws (are tight), sealing
O rings, relief seat, diaphragm, auto drain assembly. |
|
| Q49. My compressed air system is producing too much
water. What can I do? I don't want to buy a Dryer.
The only satisfactory solution to this problem
is to install a filter as close as practical to
each and every point of use in the system. |
|
| Q50. Can plastic polycarbonate bowls be used for outdoor
applications?
No. Airline equipment fitted with plastic (polycarbonate)
bowls must be kept out of direct sunlight. Metal
bowls should be used in all outdoor applications. |
|
| Q51. Why do I need to use a pressure regulator in my
system?
Pressure regulators are used to reduce and regulate
air pressure for optimum application performance.
Compressed air is expensive to produce so the
lower pressures you use will result in longer
equipment life and lower energy consumption with
the end result being significant cost savings. |
|
| Q52. Do you offer regulators for media other than compressed
air?
Yes, we offer regulators for water, steam and
other gases. Please contact us for specific information. |
|
| Q53. Will your filter remove all the moisture from
the air?
Filters only remove the moisture that has condensed
up to the filter i.e. at the temperature and pressure
the air passed through the filter. To totally
eliminate moisture from the system you will need
to dry the air with an air dryer. |
|
| Q54. How often should filter elements be replaced?
There is no set time limit on element life however
as a general rule replace the element when: Pressure
drop is too high, the element changes colour (to
red), the pressure drop indicator changes colour
(if fitted). |
|
| Q55. What noise level will silencers reduce exhaust
air down to?
Depending on size and line pressure, generally
silencers will reduce noise levels down to between
70 to 100 dba. |
