Push-in Threadless Connector
Introduction of the product
&
Product Training
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Push-in Threadless Connector
What is a Parker Push-in Threadless Connector (PiTC) ?
• A new concept in hose connectors
- an innovation in hose fittings !
• PiTC‘s are designed to provide quick and reliable
connections anywhere. In in-accessible areas the
threadless connection technology can prove to be a
real advantage
• A PiTC allows hose assembly installation by simply
pushing the PiTC nipple into the coupler until
connection is made
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Push-in Threadless Connector
Why use a Parker PiTC ?
• Easily connected in places of poor access
 no tightening of nuts = easier to connect
 fewer work place injuries during installation
• Avoids torsioning of the hose assemblies during installation
 increased hose assembly life expectancy
• User friendly
 Allows quicker disconnection so field
repair and maintenance time are
reduced (gain access to hydraulic
components - valves, motors, filters
etc)
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Push-in Threadless Connector
Why use a Parker PiTC ?
• Reduce the assembly time of the hose assembly into or
on to the machine by upto 85% !
Click & Go !
• Reduce production line assembly times
 reduce costs !!
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Push-in Threadless Connector
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Push-in Threadless Connector
How does the PiTC work ?
Nipple
Unlocking Ring
Coupler
Stop Clip
Hose assembly
The PiTC is designed to be connected and disconnected
without the requirment for any special tools.
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Push-in Threadless Connector
How does the PiTC work ?
The internal components
The catch system is the basic
Sealing O-Ring
concept behind the PiTC fitting
Support ring
• Catches: hold the nipple in
place when inserted.
• Spring O‘ring: its elastomeric
properties naturally push the
catches outwards
• Sealing O‘ring: is the fluid
sealing element in the fitting
• Support ring: specially formed
ring to provide ideal deformation
of the O‘ring under pressure
Spring O‘Ring
Catches
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Push-in Threadless Connector
How does the PiTC work ?
Connecting the PiTC
Stop clip
Unlocking ring
Check that the stop-clip is in place and that the unlocking-ring runs freely in its groove
O-Ring
Catches
The male fitting is pushed into the coupler so that the
catches in the coupler are pressed outwards
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Push-in Threadless Connector
Connecting the PiTC
The male fitting is pushed all the way in until the stop clip touches the coupler. The O-ring
presses the catches inwards so that they grip the locking flange on the male fitting. Pull
backwards to make sure the coupling is locked.
The coupling is now locked and sealed by an internal O-ring and support ring
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Push-in Threadless Connector
Dis-Connecting the PiTC
Before disconnection can begin, the stop-clip must be removed from the
nipple. A simple screwdriver is a useful tool to assist.
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Push-in Threadless Connector
Dis-Connecting the PiTC
Stop clip
Unlocking ring
The nipple is pushed all the way into the coupler so that the unlocking ring pushes
the catches aside. The catches now sit on the unlocking ring.
As the male fitting is pulled out, the unlocking ring
prevents the catches from locking so that the catches then
glide over the end of the nipple and allow disconnection
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Push-in Threadless Connector
Dis-Connecting the PiTC
Reattach the Stop clip to the nipple
Risk of over connection occurs if the Stop clip is missing during connection
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Push-in Threadless Connector
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Push-in Threadless Connector
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Push-in Threadless Connector
History of the Fitting
The fitting and fitting concept are not as new as may have been thought .....
• 1978
– An OEM project on an excavator gave the initial idea
for the WEO plug-in fiting to the designer - Weimar
Ohlsson *
• 1985
– First prototypes were produced
• 1992
– WEO Plug-In was launched
*The PiTC is based on the technology of the Cejn WEO Plug-in
fitting and has been adapted to meet Parker requirements
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Push-in Threadless Connector
History of the Fitting
• 1995
– First major customers started to use WEO Plug-In in large scale
• 1998
– Cejn acquired the WEO Plug-In
• 2000
– WEO Plug-In was re-launched by CEJN
• 2003
– Parker signed licensing agreement with Cejn to produce and
market the fittings, under the name Push-in Threadless Connector
The history shows that the fitting is known, proven and tested
in the market since 1995 !
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Push-in Threadless Connector
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Push-in Threadless Connector
Testing the fitting
Connection / Disconnection functionality
Continued leak free functionality after
5000 connect / disconnect cycles
Tested to EN ISO 1402 (proof pressure test)
Tested far beyond the normal application expectations
(PiTC is not designed to replace quick coupling)
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Push-in Threadless Connector
Testing the fitting
Dynamic impulse pressure testing – Static installation
Test specification:
• Test standard = ISO 6803
• Test pressure = 46.6 Mpa (133% of standard W.P)
• Test cycles
= 1 million
Results:
Continued functionality
Leak free
Typical applications simulated:
•Cab Joystick valves, Power steering systems, connections to
control valves......
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Push-in Threadless Connector
Testing the fitting
Dynamic impulse pressure testing – Rotating installation
Test specification:
• Test standard = ISO 8032
• Test pressure = 46.6 Mpa (133% of standard W.P)
• Test cycles
= 500,000
Results:
Continued leak free functionality
Easy disconnection still possible
“ Flex“ impulse testing hoses more accurately simulates field
applications where the fittings are regulary subjected to axial loading
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Push-in Threadless Connector
Testing the fitting
Dynamic impulse pressure testing – Offset Rotating installation
Test specification:
• Test standard = ISO 8032
• Test pressure = 46.6 Mpa (133% of standard W.P)
• Test cycles
= 500,000
Results:
Continued leak free functionality
Easy disconnection still possible
Hoses were offset across the ports to induce torsion during
rotation
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Push-in Threadless Connector
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Push-in Threadless Connector
PiTC Cartridges – The core of the fitting
The cartridges form the core of the PiTC system.
They can be integrated into either hydraulic ports directly or into coupler
bodies
•O-ring, NBR 70
•Support ring, Hytrel
•Washer, steel
•Assembled cartridge
•O-ring, NBR 50
•Catches, hardened steel
•Front part, steel
•Dust cap, plastic
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Push-in Threadless Connector
Flexibility
Couplings
Valves
Form parts
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Push-in Threadless Connector
PiTC Cartridges – The core of the fitting
Integrated into a coupler body
The PiTC coupler are available in standard configuration threads (BSP, Metric, UNF)
•PiTC Plug-In Cartridge
• Coupler body in different
thread configurations
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Push-in Threadless Connector
PiTC Cartridges – Assembled into hydraulic components
Integrated into hydraulic components (valves, cylinders, pumps) the PiTC
cartridge further optimises hydraulic systems
• PiTC cartridges save space - allows compacter designs
• opens re-design possibilities of blocks and surrounding systems
• Components can be sub-assembled by the supplier
•Reducing OEM assembly times on the production line
•No re-tightening of fittings
•hard to reach “screw-fittings“, would be a thing of the past
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Push-in Threadless Connector
PiTC Cartridges – Assembled into Hydraulic components
Integration of PiTC‘s into Parker Hydraulic Group components
• Proven & Tested functionality – Parker‘s product guarantee
• One part number to the customer
• Cost savings
• Bolt on-to the machine
• No pre-assembly at the customer
• Click and Go
Parker‘s UNIQUE advantage
One system supplier – Hydraulic and Fluid Connector !
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Push-in Threadless Connector
General Product Specification / Range
Port / Hose size (inch)
Maximum Working Pressure (Mpa)
Maximum Burst Pressure
Nipple Configurations
Coupler configurations
Temperature rating
Material
Click here to view brochure
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1/4"
35,0
140,0
3/8"
1/2"
3/4"
1"
35,0
35,0
35,0
25,0
140,0 140,0 140,0 100,0
Straight, 45° and 90°
Straight. Specials on request
-30°C to 100°C
Zinc plated carbon steel as standard
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Push-in Threadless Connector
Reducing Assembly Times
Major advantage of PiTC‘s compared to standard threaded connectors is
the assembly time saving that can be reached on an OEM‘s production
line.
Time studies prove upto 85% time savings are possible
Reducing Assembly Times
Time saving is however, greatly dependent upon the “ build situation“
• Easily accesible ports  smaller time savings
• Ports in close proximity to one another  greater time savings
• In places of limited access  greater time savings
In general, to ascertain the correct time saving, studies (hence cost
saving analysis) must be carried out for individual applications on the
individual machines
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Push-in Threadless Connector
Time study
To obtain approximate values for the time savings possible, 3 time
studies were carried out, comparing Push in connectors to threaded
hose fittngs and adaptors*
*The results only give an indication of the trend that can be expected
Time study factors – Time study 1
• Evaluation made using a valve block with 8 3/8“ BSP ports,
freely placed on a flat surface (Similar to picture)
• O-lok threaded adaptors were used
• Comparison was only made for the time to connect the
hose fittings to the adaptors / Couplers.
• It was considered that the installation of adaptors to the
block or of couplers to the block takes the same
amount of time.
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Push-in Threadless Connector
Time study 1
Connecting the hoses to the ports (couplers) was carried
out in the order shown:
Configuration A
1
5
PiTC =
O-Lok =
2
6
Configuration B
3
7
4
8
29 sec
1 min 11 sec
Time saving 59%*
*Results clearly show that the time saving is
dependent upon build situation.
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1
5
3
7
2
6
4
8
(Configuartion B; In order to simulate difficult
installation situations, the connection order
of the ports was changed)
PiTC =
O-Lok =
30 sec
1 min 21 sec
Time saving 63%*
Push-in Threadless Connector
Time study 2
Ascertain if screwing the couplers into the valve influences the time results
• Complete comparison was made for the time to connect the
adaptors / Couplers to the valve block and also the hose
fittings to the adaptors / couplers
• Evaluation made using a valve block with 8 3/8“ BSP ports,
freely placed on a flat surface (Similar to picture)
• O-lok threaded adaptors were used
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Push-in Threadless Connector
Time study 2
Installation of ports carried out in the order shown:
Configuration A
1
5
PiTC =
O-Lok =
2
6
Configuration B
3
7
4
8
126 sec
287 sec
Time saving 56%*
*Results clearly show that the time saving is
dependent upon build situation.
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1
5
3
7
PiTC =
O-Lok =
2
6
4
8
129 sec
261 sec
Time saving 50%*
Push-in Threadless Connector
Time study 3 – Street sweeping machine, main hydraulic control valve
Connecting 8 Push in connectors
-v- Connecting 8 threaded fittings
Paramters/Assumptions
evaluation
Time
study conducted byof
the
OEM‘s engineers on a prototype machine
• Connection of 8 ports of the main control valve block mounted in the
machine were compared
• Time to tighten the threaded connections includes the handling of the
tools, hand tightening the nuts, marking the flats and finally tightening
the nuts
• All installation work done by mechanics on the production line
Constant factors for both fittings types
• Time taken to install either adaptors or couplings into the valve does not
change
• Time to route hose assemblies through the machine, does not change
• Removal of plastic protection caps - comparable
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Push-in Threadless Connector
Time study 3 – Street sweeping machine, main hydraulic control valve
Connecting 8 Push in connectors
Push in connector
28,5 sec  3,57 sec / connection
-v- Connecting 8 threaded fittings
Threaded connector
348 sec  43,5 sec / connection
Not every connection was the same as the location of the port and ease of access,
effected the time required to connect, so an average value was calculated as:
Time saving 38,16 sec per connection  87%
With an average hourly rate in a production of 38€
 Cost saving 0,40€ per connection
on a simple valve
IMPORTANT : This cost saving can be indefinitely
higher dependent upon application
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Push-in Threadless Connector
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Push-in Threadless Connector
Question:
What differentiates
the PiTC fitting from
the competitors?
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Push-in Threadless Connector
Answer:
Competitors
Wire latch system
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PiTC
Segment system
Push-in Threadless Connector
Answer:
The locking system.
Competitors
PiTC
Wire latch ring
Segments
Wire latch system
• Small load bearing
surface area
• Increased surface
wear
(vibration/swivel)
• Reduced dynamic
loading capabilities
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Segment system
• Large load bearing
surface area
• Low surface wear
• Higher dynamic
loading capabilites
• Improved
resistance against
swivelling
Push-in Threadless Connector
And......
The Un -locking mechanism
Competitors
PiTC
Unlocking sleeve
Release ring
Wire latch system
• Unlocking sleeve is
between nipple and body
of coupler  less stable
to side loading
• Unlocking mechanism
liable to blocking should
wire latches wear
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Segment system
• Offers greater inherent
stability (Nipple body
against coupler body)
• Side load stability
•More stable design
• Less liable to failure if
wear is incurred
Push-in Threadless Connector
Typical applications / Reference customers
Ripper
Pilot
• Fork lift truck masts
Joystick
Pressure
Line
• Excavator booms
Special PiTC
• Mini construction machines
T Pieces to replace
• Mobile cranes
these parts
• Power steering lines (Trucks / construction machines
• Pilot lines (Small space restrictions – new design possibilities
• Agricultural machines
• Industrial hydraulic applications
• Forrest Harvesters
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Push-in Threadless Connector
Customers
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