There are many factors to consider when specifying the correct valve for your application and every application is different. These conditions could be the media, temperature, compatibility, coil voltage, wattage, or explosion proof, even pressure ratings. All these considerations have an impact on specifying the correct valve to ensure millions of maintenance free cycles. This webinar will talk about the 7 valve questions you need to ask. View this webinar to learn: What questions to ask when specifying a Valve that is right for you. How to get the most life from your solenoid valve because you accurately specked in your valve.

1. 7 Basic Valve QuestionsTo
SpecifyThe Correct Valve

2. q This webinar will be available afterwards at
www.designworldonline.com & email
q Q&A at the end of the presentation
q Hashtag for this webinar: #DWwebinar
Before We Start

3. Moderator Presenter
Paul Heney
Design World
Richard Ronzello
Peter Paul Electronics

5. 7 Basic Valve Questions To
Specify The Correct Valve
Wednesday
December 17, 2014

6. Webinar Overview
There are many factors to consider when specifying the correct valve for your
application and every application is different. These conditions could be the
media, temperature, compatibility, coil voltage, wattage, or explosion proof,
even pressure ratings. All these considerations have an impact on specifying the
correct valve to ensure millions of maintenance free cycles. This webinar will talk
about the 7 valve questions you need to ask.

7. • Flow
o Liquid
o Gas
o CV Rating
• Pressure
o Vacuum
o Up to 5,000 psi
• Connections
o NPT, British Pipe Thread, etc.
• Valve Function
o 2Way, 3 Way etc.
• Environment
o Hot, cold, extreme,
o Water resistant
o Hazardous
• Size
o Miniature
• Energy
o Low
• Media
o Liquid, gas, etc.
o Temperature
Considering all the Variables

8. Typical Two and Three
Way Solenoid Valves

9. Peter Paul valves are electrically operated,
direct acting, stainless steel solenoid valves.
(orifice sizes ranging from .6mm to ½”)
Other valves may include: Direct Lift, Linked
Pilot and Internal Pilot Operated.
(orifice sizes ranging from ½” to 3”)

10. A valve in which the
orifice is closed in the
de-energized (no
electrical current to
coil) position and no
flow can exist
between the inlet and
outlet ports.
2 Way Normally Closed

11. In the energized position
(electrical current to the
coil) the plunger lifts off
the seat allowing flow
between the inlet and
outlet ports.
2 Way Normally Open

12. There are 6 different types of valve
functions:
• Two Way Normally Open
• Two Way Normally Closed
• Three Way Normally Open
• Three Way Normally Closed
• Three Way Multi Directional Control
• Three Way Multi Purpose

13. THE FIRST QUESTION:
How do you want the valve to
function, as a 2 Way NC, 2 Way
NO, 3 Way NC, etc.?

14. Anatomy of a Valve

15. Threaded holes that
allow connection of
pipes or other
components to the
valve.
Ports can vary in
size and thread type.
Ports

16. THE SECOND QUESTION:
What is the Pipe Port size?
(10-32 up to 3” NPT)
The pipe port size used is sometimes application dependent.
If an orifice size is chosen, the port connection is sized accordingly
not to restrict flow. Larger orifice sizes usually require larger pipe ports
to accommodate flow or applications where multi valves are used in
manifolds. NPT, BSP and SAE threads are other port options.
EXAMPLE: Pipe ports are usually horizontal to the valve while some
applications demand bottom ports, manifold mount and others to
accommodate space issues. Manual override and metering are also
considerations. Body material is also a factor for media compatibility or cost.

17. Coil
Electric current
passes through a
wire, wound around
a bobbin to create
an electromagnetic
field which draws
the plunger upward.

18. COIL OPTIONS
Molded Coil
Third Wire Ground
Potted Coil & Housing
Spade Terminal Coil
High Temperature Coil
European DIN Coil

19. COIL VOLTAGE
Exact coils voltages are chosen for each application. AC Line voltage or DC
power supplies are generally used to provide specific voltage to a
solenoid valves coil to provide the necessary power to lift the plunger off
the seat to allow flow.
EXAMPLE: Each coil has a plus or minus voltage tolerance. Intermittent
duty coils allow a certain amount of “on and off time” to allow for higher
pressure ratings that require a cool down cycle.

20. THE THIRD QUESTION:
What is the actual voltage the valve needs to function at?
(24/DC, 120/60, 230/50 etc.)
Low wattage coils for power conscience applications should also be
considered where battery power is required. Magnet latching coils might be
another choice to consider as a 30 millisecond pulse of power will energize
and the permanent magnet holds the plunger up off the seat to allow flow.
Reversing the polarity with another short pulse will de-energize the valve.

21. The maximum difference in
pressure between the inlet
and outlet ports which the
valve can be safely operated
by the solenoid
Maximum Operating Pressure Differentials

22. Maximum Operating Pressure
Differential
Valve
actually
sees
200
psi.
300
psi.
Never
drops
below
100
psi.

23. THE FOURTH QUESTION:
What is the maximum pressure differential the valve
has to function at?
(25 psi., 100 psi., 500 psi., etc.)
Each valve is configured to allow a certain amount of flow based on pressure.
Different series of valves from small to large valves are offered to meet application
pressure requirements. These pressure ratings can go up to 5,000 psi. which are
offered on standard valves.
EXAMPLE: The pulling force of a coil has a direct effect on the orifice size and the
pressure rating. Usually the smaller the orifice size the higher the pressure rating.
Internal pilot valves, usually with a diaphragm or piston can achieve higher flows with
larger orifice sizes up to 200 psi. A minimum pressure may be required to operate
this type of valve.

24. Used to control flow, orifice size is
directly proportional to the
amount of flow.
As you increase the diameter
of the orifice, you increase the
amount of flow.
As you increase the orifice size,
you decrease the pressure rating,
as it requires more force to lift the
plunger off the orifice.
Orifice

25. THE FIFTH QUESTION:
What size Orifice or Flow does the application require?
(.6mm up to 3" Orifice)
Choosing the right orifice size will allow the correct amount of flow required
for an application. Cv, the flow coefficient is the industry standard for flow
measurement.
EXAMPLE: Flow is also measured by GPM (gallons per minute) or CFM
(cubic feet per minute). Whether you are measuring a volume over time,
like filling a coffee cup from a dispenser or controlling an actuator to achieve
maximum flow in a certain time frame.

26. The housing is used to
create the magnetic
flux required to allow
the coil to act as an
electromagnet.
Housing

27. Many options available
HOUSING OPTIONS
Strain Relief
Single Automotive
Double Automotive
AN Connector
Yoke
Mounting Bracket
Standard - Grommet and Conduit

28. THE SIXTH QUESTION:
What electrical connection or housing option does the
application require?
(Conduit, Grommet, Explosion Proof or NEMA ratings for high moisture environments)
Choosing the correct housing or coil enclosure is based on the condition or
environment that the valve will operate. Wet or hazardous conditions need
special coil enclosures, such as Explosion Proof housings or liquid potted for
submersible applications.
EXAMPLE: Painted, chrome and other finishes on housings are offered as well as
different color and size lead wires to better fit special applications. European DIN,
spade and other coil connections for electrical wire hook up provide many choices.

29. Air water and other fluids
compatible with standard
Buna seals. Hot water,
gasoline, and many oils
require special seal
materials.
Media

30. Standard Valves
0°F (-18°C) to 104°F (40°C) ambient
0°F (-18°C) to 150°F (65°C) media
Coil can be designed to tolerate
much higher or much lower
ambient and media temperatures.
Seal material must be considered
when temperatures exceed above
conditions
Valve Temperature Range

31. THE SEVENTH QUESTION:
What are the Media and Ambient, Temperature / Conditions?
Media Temperature / Conditions: The correct seal material or elastomers should be
considered when the media temperature is abnormally high or low. Seal deterioration
can lessen the life of the valve and also cause the sealing surface to prematurely leak.
Also, seal compatibility with the media should be considered as swelling, splitting may
take place over time again causing the valve to prematurely fail.
Ambient Temperatures / Conditions: The correct coil temperature rating should be
considered if the ambient conditions are extreme. Coil temperature ratings from
105 degrees C to 180 degrees C are offered to accommodate these high temperatures.
Also the correct seal under high and low conditions should be chosen to meet these
demands. Elastomers have different temperature ratings for different media for longer
life.

32. www.peterpaul.com
On our website we have our Valve Wizard,
this is an amazing tool that will help you
specify the correct valve for your
application using the
“7 Basic Valve Questions”.

33. Q & A
Thank you for participating in the 7 Questions Webinar.
We hope these have helped you and we look forward to hearing from you.
Please be sure to visit our website and the Valve Wizard. Feel free to contact
our unique technical support department and our friendly customer service
department for all your valve needs.

34. Questions?
Paul Heney
Design World
pheney@wtwhmedia.com
Twitter: @DW_Editor
Richard Ronzello
Peter Paul Electronics
Richard.ronzello@peterpaul.com

35. Thank You
q This webinar will be available at
designworldonline.com & email
q Tweet with hashtag #DWwebinar
q Connect with Design World
q Discuss this on EngineeringExchange.com