- for Ultra High-Pressure Hydraulics Stainless Steel Range

ULTRA HIGH-PRESSURE HYDRAULICS

Application Guide

www.cejn.com

Ultra High-Pressure Hydraulics Stainless Steel Range

UHP Stainless Steel Range
THE UNIVERSAL BUILDING BLOCKSCEJN adapters now extend into a comprehensive
UHP Stainless Steel Range. Split into 3 groups, HP-MP-LP
these performance parts complement CEJN’s UHP couplings and hoses providing the universal building blocksof high pressure hydraulic systems.
A major part of CEJN’s development processes is testing. CEJN
production lines have integrated product integrity testing, so thateach UHP coupling and hose assembly is put through their paces
before delivery. CEJN has a long history of specifying and using
adapters and blocks for their own testing. Now this knowledge isapplied and formed into CEJN’s stainless steel range for highpressure applications, built on industry standard compatibility cone
and thread joints for lasting installations.
All the information including drawings and 3D CAD models neededby mechanical designers, is available on the CEJN website.
For more information go to: www.cejn.com

CONTENT

2

ALWAYS DEPENDABLE

03		

GENERAL APPLICATIONS EXAMPLE

04

APPLICATION EXAMPLE - R&D

06		

APPLICATION EXAMPLE - PRODUCTION

07

GUIDE TO USAGE08

USEFUL INFORMATION

09			HIGH PRESSURE (HP) & MEDIUM PRESSURE (MP)10			

LOW PRESSURE (LP)11

Ultra High-Pressure Hydraulics Stainless Steel Range

CEJN - Always Dependable
QUALITY. Hydraulic systems are often used in harsh environments under demanding conditions.
With CEJN components, the material selection and the design process assure that the parts hold up
in the roughest of applications. From many decades of testing hydraulic couplings, CEJN knows fromhard earned experience what is required from stainless steel components in testing. CEJN is now
able to share this product knowledge via the UHP Stainless Steel Range and offer a broader range ofhydraulic connections from 69 MPa (10k PSI) to 414 MPa (60k PSI).
Whether building, modifying or repairing a complex test rig or laboratory equipment, or more portable types of UHP
equipment, CEJN’s wide range of stainless steel adapters can be part of that system.

Traceability
EVERY SINGLE COMPONENT IS MARKED
A key feature of CEJN’s UHP Stainless Steel Range, is that every component is marked individually.
This means that each part is traceable all the way back to the specific batch of material from thesteel mill. Working pressure and part number are also clearly marked on each component.

Material assurance
WHAT MAKES THE CEJN UHP STAINLESS STEEL RANGE
Material traceability is important and means that the composition and propertiesof the stainless steel alloy used in the series are of documented quality in terms of
performance, something that other offerings in the industry often miss. The material grade is 316L / EN1.4404 and is NACE certified.

Compatibility
INDUSTRY STANDARD COMPLIANT
The design makes it easy to join all major industry seals and threads, so that the widest possible
range of integration is possible. Specifying CEJN for new equipment, to complement or rebuild
existing systems is straight forward and with guaranteed CEJN quality.

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Ultra High-Pressure Hydraulics Stainless Steel Range

Application Examples
WET CHRISTMAS TREEThis is the most critical equipment installed at the wellhead to contain and control the production or injection of fluid into
the well. It consists of a set of valves acting as a safety barrier to the environment and also driving the well flow to a manifold
or direct to a floating production unit. Additional functions include pressure relief, chemical injection, a conduit for control
systems to monitor and control safety valves in down-hole. Installations can be at around 2500m and depending on the wellsurge, ranging from 14MPa (2k PSI) to 138MPa (20k PSI), can produce up to 20000 barrels a day. MP Stainless Steel fittings
are a likely choice in the hydraulic system lines and panels, to control subsea valves, hydraulic connector, subsea control system and perform chemical injection, with actuating pressure ranging from 10MPa (1.5k PSI) to 69MPa (10k PSI).

COMPONENT TESTING
Manifold and Christmas Tree manufacturers need to perform hydrostatic tests on the system subcomponents before operating in deep waters. Hydraulic interconnections subjected to high pressure tests
need to be in remote controlled safe and isolated areas (bunkers).
CEJN’s UHP hoses, quick couplings and UHP Stainless Steel adapters ensure that the tests are equipped
to run safely and well organized.

EVALUATION OF THE OIL PLATFORM
This application consists of lifting the oil platform, built in dry dock, to calculate weightand center of gravity.
For this project, UHP Stainless Steel products and hoses were used to connect thehydraulic cylinders and hydraulic power unit, using a bespoke manifold frame.

FLUSHING UNIT
Dedicated flushing units are used for cleaning internal areas of all the components in the hydraulicsystems, which must operate free of impurities or contaminants. Several different fluid options canbe used in cleaning the system, such as HW, ethylene glycol or synthetic fluids. The fluid is kept in aturbulent state to improve the removal of impurities. The equipment is assembled with control panels,
triplex pump, filters, pipes, valves and also UHP stainless steel adapters for all the system connections.
MP products are most commonly used for this application.

HIGH PRESSURE CONTROL PANELS
The panels are assembled for controlling, regulating and distributing high pressure in several lines through valves, pressuregauges and regulators, which handle the downstream and upstream lines.
In this case, Stainless Steel high pressure connections are used for adapting different kinds of threads and connections in
the panel instrumentation. MP or HP connections are ideal since they guarantee the efficiency of tests by preventing leaks.

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Ultra High-Pressure Hydraulics Stainless Steel Range

The applications overviewed here use building blocks from the UHP Stainless Steel Range. High pressure
testing of key components before assembly or as part of routine maintenance means that reliability anddimensional compatibility are important. CEJN’s experience from high pressure product testing gives a uniqueinsight into what these requirements are.

MANIFOLD FOR COMPONENT TESTING
There are some critical components in the Christmas Tree that must be tested before being assembled in the final
product. The high pressure unit is connected to the manifold responsible for simultaneously testing different lines,
which minimizes test time.
The image shows an example of a manifold composed of valves, stainless steel UHP adapters, hoses and couplings
providing simultaneous testing on different components.

SUBSEA MANIFOLD
Subsea manifolds are used to gather or inject fluids from or to a Christmas Tree and a floating production
unit. The assembly consists of valves, chokes, flowmeters, accumulators and sensors. The MP range of UHP
Stainless Steel adapters are used in these hydraulic lines, to control subsea valves, hydraulic connectors,
subsea control systems and perform chemical injection, with actuating pressures up to 69MPa (10k PSI).

INSTALLATION OF HYDRAULIC HOSES AT PIT AREA
The testing of products used in deep waters are carried out to PITs (Product Integrity Test standards). Here, theoperators simulate the real application and put the equipment in submerged working conditions.
The tests are done using nitrogen (N2) or fluids connected from the hydraulic booster units to the panel and are
distributed in the hydraulic hoses. CEJN items needed for making the connections along the circuit are; hoses,
pipes, stainless steel adapters and quick couplings.

PRESSURE TEST UNITSThis equipment is used for static pressure tests in several applications. Powered by compressed air they canpressurize both liquids and gases at very high pressures and volumes.
UHP Stainless Steel connections in this type of equipment are used for the pump outlet, pressure gauges, bulkheads and pressure relief valves. MP or HP cone-type seals with threaded connections give guaranteed tightnessof the system

VALVE TEST BENCH
Valve test equipment for ensuring product efficiency includes pressure generating units and pressure controls.
These can be either pneumatic or manual powered to reach the high pres­sure levels, so that the valve bodies andseating can be evaluated. Typically MP and HP connections found in the stainless steel range, such as crosses, tees,
adapters and bulkheads, are used for instrumentation on discharge lines between the bench and the pressure
generating unit.

5Research & Development

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Ultra High-Pressure Hydraulics Stainless Steel Range

TESTED & VERIFIED DESIGNCEJN TESTED. Testing hydraulic system components is an in-depth and important step for
product validation.
CEJN’s own laboratory uses the UHP Stainless Steel Range
during the validation testing of new products. The UHP
quick couplings are pushed to the limits of their endurance and beyond through impulse and destructive burst
testing.
The UHP Stainless Steel components are easy to movearound and manoeuvre to set up for different producttests and series.

6

MINIMISE LEAKAGE

EXTENDED LIFE SPAN

When testing new coupling designs,
the rest of the system needs to perform faultlessly, without any trace ofleakage. CEJN knows what is neededfrom experience.

Couplings during the develop phasewill undergo hundreds of thousands ofimpulses during testing. The life spanof the other components must deliver
even better performance.

HEALTH & SAFETY

SAVE TIME

When building a testbench, the main
objective is to create a safe environment for the employees to test the
products without compromise - use
CEJN parts for maximum safety.

Standard industrial compatibility
based on the 60° cone and threadsystem for both MP and HP connections.

Ultra High-Pressure Hydraulics Stainless Steel Range

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Production

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HOSE TESTING TO ENSURE QUALITYASSEMBLY LINE-PRODUCT VERIFICATION.
CEJN UHP hoses are validated by visual inspection and pressure testing before delivery to thecustomer. The high pressure hydraulic test benchrequires several cone and thread blocks, tubes
and adapters from CEJN’s UHP stainless steel
range.
This application requires precision items, which withstandthe wear from the intensive production takt. Hundreds ofbespoke hoses are assembled for customers daily, so only
the highest quality components match up to the demandsof the product verification job.

MINIMISE LEAKAGE

EXTENDED LIFE SPANPRECISION MADESAVE TIME

By using a 60° female and 59° malecones, CEJN insures that the seals
in the thread and cone MP and HP
systems stay tight under the highest
pressure.

CEJN specifies and selects the grade ofstainless steel carefully in their parts toextend the life span to the maximum.

The thread and cone system gives areliable seal if the surfaces and angles
are smooth and precise.

In a production situation, time iscritical. When component reliability inoperation can make the difference; thequality of CEJN's components is thatdifference.

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Ultra High-Pressure Hydraulics Stainless Steel Range

Guide to usage
AN ADAPTER FOR EVERY APPLICATION. The areas in which the UHP stainless steel range can beused are many. The key is the wide range of adapters, increasing the versatility and possibility to connect equipment. Where there is a high pressure hydraulic system these types of components will be
installed. The industry standard cone and thread, together with dimensional compatibility, mean that
upgrading existing systems presents no issue.
Designing a high pressure system is easy, as all the 3D CAD models and drawings are available for download. Complete
specifications are available to assist building a high pressure system.

To enable easy selection of the correct components CEJN’s stainless steel range is categorized into three groups basedon pressure:- LP (Low Pressure) up to 103 MPa (15k PSI)
- MP (Medium Pressure) up to 138 MPa (20k PSI)
- HP (High Pressure) over 138 up to 414 MPa (20k PSI - 60k PSI)
Within each of the three groups, they are further sorted in sections with similar properties. The data then fully shows
individual product properties, making it easy to find the appropriate adapter to suit the tube or thread size.

8Ultra High-Pressure Hydraulics Stainless Steel Range

Useful Information
KNOW WHAT THE SYSTEM IS. Avoid confusion around what type of high pressureconnection is in use, how it can be described and know how to install and recognize
UHP Stain­less Steel components.
This brief information is helpful when specifying or planning to repair a high pressure system.

Tube/Collar Thread MP

Gland Nut Thread MP

1/4"

7/16"-20 UNF

27

20

3/8"

9/16"-18 UNF

41

30

9/16"

13/16"-16 UNF

75

55

3/4"

3/4"-14 NPSM

123

90

1"

1 3/8"-12 UNF

204

150

Tube/Collar Thread HP

Gland Nut Thread HP

1/8"

1/2"-20 UNF

20

15

1/4"

9/16"-18 UNF

34

25

3/8"

3/4"-16 UNF

68

50

9/16"

1 1/8"-12 UNF

150

110

Torque right
Note that despite HP and MP having similardimensions they can have quite different torque values.
More torque guidance for other threaded connections
like G (BSPP), JIC, NPT and Type M can be found atwww.cejn.com

Medium Pressure - MP

Torque (Nm)Torque (Nm)Torque (Lbf·ft)

Torque (Lbf·ft)

High Pressure - HP

Spot the difference on Gland Nuts

Tube

Depending on how the cone and thread connection
interacts, you can easily spot if you have a medium orhigh pressure version of the fittings.

Gland Nut

You can see on the image to the left that on the MP
coupling the collar is placed outside the gland nut andin the HP coupling the collar is inside the gland nut.

CollarTube

How to install
UHP Stainless Steel 1.
Gland Nuts

Gland Nut

Thread the gland nut over the tube withthe hexagonal head first.

3.

Lube the threads on the gland nut, the end surfaceof the collar that goes against the bottom of thegland nut and the conical tip of the tube.

Collar

The most important step to insure aleakage free connection.

2.

Thread on the collar on the tube so that
1-2 turns of the pipe threads are visible, thethreads are counter clockwise.

4.

Install the tube and nut into the block.

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Ultra High-Pressure Hydraulic Products - Stainless Steel Range

Stainless Steel Range HP (over 20k to 60k PSI)HP Blocks

HP Collar and Gland Nuts

Stainless SteelStainless Steel

Industry standard blocks in cross, tee and elbow configurations.
Compact designs, made from AISI 316L / EN1.4404 stainlesssteel for maximum life and safety weep holes on all the connection ports. All blocks provided with collars and gland nuts.

Additional collar and gland nuts are available. Suitable for CEJN’s
hose tube fittings with left hand threads.

HP Tubing

Adapters

Stainless SteelStainless Steel

Industry standard tubes in 1/4”, 3/8” and 9/16” sizes.
Manufactured from cold drawn AISI 316L / EN1.4404 StainlessSteel for maximum life.

Industry standard HP adapters. Compact designs, made from acidresistant, NACE certified, AISI 316L / EN1.4404 Stainless Steel for
maximum life.

HP Adapters

HP Adapters

Type M to HP in Stainless SteelType M in Stainless Steel

Males threaded adapters with type M from 9/16” to 1-5/16” andHP from 1/4” to 1”. Standard 60° cone type sealing with UNF
threads. Manufactured from cold drawn AISI 316L / EN1.4404
Stainless Steel for maximum life.

Type M adapters, plugs and caps from 9/16” 1-5/16”. Standard 60°
cone type sealing with UNF threads. Manufactured from cold drawn
AISI 316L / EN1.4404 Stainless Steel for maximum life.

Stainless Steel Range MP (up to 20k PSI)MP Blocks

MP Collar and Gland Nuts

Stainless SteelStainless Steel

Industry standard blocks in cross, tee and elbow configurations.
Compact designs, made from AISI 316L / EN1.4404 stainless steel
for maximum life and safety weep holes on all the connection
ports. All blocks provided with collars and gland nuts.

Additional collar and gland nuts are available. Suitable for
CEJN’s hose tube fittings with left hand threads.

MP Tubing

MP Adapters

Stainless SteelStainless Steel

Industry standard tubes in 3/8” and 9/16” sizes. Manufactured
from cold drawn AISI 316L / EN1.4404 Stainless Steel for maximum life.

Industry standard adapters for tube sizes from 1/4” to 1”.
Manufactured from cold drawn, NACE certified, AISI 316L /EN1.4404 stainless steel for maximum life.

MP Adapters

MP Adapters

MP to HP in Stainless SteelMP to type M in Stainless Steel

Adapters for MP and HP tubes from 1/4” to 9/16”. Standard 60°
cone type sealing with UNF threads. Manufactured from cold
drawn AISI 316L / EN1.4404 Stainless Steel for maximum life.

Males threaded adapters with type M from 9/16” to 1-5/16” andMP from 1/4” to 1”. Standard 60° cone type sealing with UNF
threads. Manufactured from cold drawn AISI 316L / EN1.4404
Stainless Steel for maximum life.

CEJN reserves the right to make changes without further notification. Check with an authorized CEJN distributor for availability and prices. All measurements are in mm. Thread connections are listed according
to ISO Standards. Other connections and sealing material on request. Please visit our website, www.cejn.com, for general maintenance tips. Some part numbers may be subject to minimum order quantities.

10Ultra High-Pressure Hydraulic Products - Stainless Steel Range

Stainless Steel Range LP (up to 15k PSI)
LP Adapters

LP Adapters

NPT in Stainless SteelNPT to MP in Stainless Steel

Industry standard adapters for 1/8” to 1” NPT. Compact
designs, made from NACE certified AISI 316L / EN1.4404 stainless steel for maximum life.

Industry standard adapters for 1/8” to 1” NPT to MP tubes sizes
1/4”, 3/8”, 9/16” and 1”. Compact designs, made from NACE
certified AISI 316L / EN1.4404 stainless steel for maximum life andsafety weep holes on all the connection ports.

LP Adapters

LP Adapters

NPT to G in Stainless SteelNPT to type M in Stainless Steel

Industry standard adapters for 1/4” to 1” NPT to G 1/8” ,1/4”,
3/8”, 1/2” and 1” with 60° internal sealing cone. Compact designs,
made from NACE certified AISI 316L / EN1.4404 stainless steel for
maximum life.

Industry standard adapters for 1/4” to 1” NPT to Type M 9/16”,
3/4”, 1” and 1,5/16”. Compact designs, made from NACE certified AISI 316L / EN1.4404 stainless steel for maximum life.

LP Adapters

LP Adapters

NPT to HP in Stainless SteelJIC in Stainless Steel

Industry standard adapters for 1/8” to 1” NPT to HP tubes sizes
1/4”, 3/8”, 9/16” and 1”. Compact designs, made from NACE
certified AISI 316L / EN1.4404 stainless steel for maximum lifeand safety weep holes on all the connection ports.

JIC standard adapters with 37° flare tube connection for JIC 04,
06, 08 and 16. Compact designs, made from NACE certified AISI
316L / EN1.4404 stainless steel for maximum life.

LP Adapters

LP Adapters

JIC to NPT in Stainless SteelJIC to MP in Stainless SteelJIC standard adapters with 37° flare tube connection for JIC
04, 06, 08 and 16 to NPT tubes sizes 1/4”, 3/8”, 1/2”, 3/4”
and 1”. Compact designs, made from NACE certified AISI 316L /EN1.4404 stainless steel for maximum life.

JIC standard adapters with 37° flare tube connection for JIC 04,
06, 08 and 16 to MP tubes sizes 1/4”, 3/8”, 9/16”, 3/4” and 1”.
Compact designs, made from NACE certified AISI 316L / EN1.4404
stainless steel for maximum life.

LP Adapters
JIC to HP in Stainless SteelJIC standard adapters with 37° flare tube connection for JIC 04, 06
and 08 to HP tubes sizes 1/4”, 3/8” and 9/16”. Compact designs,
made from NACE certified AISI 316L / EN1.4404 stainless steel for
maximum life.

CEJN reserves the right to make changes without further notification. Check with an authorized CEJN distributor for availability and prices. All measurements are in mm. Thread connections are listed according
to ISO Standards. Other connections and sealing material on request. Please visit our website, www.cejn.com, for general maintenance tips. Some part numbers may be subject to minimum order quantities.

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We have been producing professional, high-quality and innovative quick connect couplings here at CEJN since ourfirst patented coupling was launched in 1955. CEJN is an independent global niche company with its head officein the heart of Sweden. Over the years we have expanded to 22 locations worldwide and are supplying products
and services to virtually every industry segment. At CEJN, we are united by our five core values: safety, environment,
quality, innovation and performance. They are our cornerstones and define who we are, how we work, what we
believe in and what we stand for.
Contact your local sales office or visit www.cejn.com for more information.

09 0012 363 / 2019-08 / CEJN AB, Skövde Sweden

Made in Sweden since 1955