WEH® Connector TW241 for external straight tube diameters , clamping lever actuation, vacuum up to max. 70 bar - Product family

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For connection onto straight tubes, sealing on the exterior diameter
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Self-retaining up to max. 70 bar
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Connection in seconds
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No hand tightening required
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WEH® Jaw Locking Mechanism

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WEH® Connector TW241 for external straight tube diameters , clamping lever actuation, vacuum up to max. 70 bar - Product family

SKU:2977406

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WEH® TW241 | Tube coupling for pressure tests

The WEH® TW241 Quick release couplings provide optimum sealing on external copper tubing within seconds. Thus being the ideal tool for leak tests, pressure tests and vacuum tests of pipes.
WEH® TW241 | Function

The WEH® TW241 quick disconnect is very easy to operate. Only push the quick coupling onto the test piece until it stops and turn the lever through 90° to seal the test piece. Then test pressure can be applied and pressure testing up to 70 bar can proceed.

Description

WEH® Connector TW241 for external straight tube diameters , clamping lever actuation, vacuum up to max. 70 bar - Product family

The WEH® TW241 is the ideal tool for quick and easy leak testing at straight copper, steel or aluminium tubes with an external Ø of 6.0 mm to 22.2 mm. Further typical applications are underwater, pressure decay and helium tests.

The WEH® TW241 seals exterior tube diameters within seconds and bridges tube tolerances of up to ± 0.25 mm (required roundness of external tube diameter max. 0.25 mm) with no operational adjustment of seals.

The WEH® Jaw locking mechanism provides maximum grip with minimum distortion of the test piece. There is no need for additional fixing.

Operation is amazingly easy. Plug the WEH® Connector onto the test piece and actuate the clamping lever downwards or upwards to establish the pressure-tight connection. An internal pressure support provides for additional operator safety ensuring that disconnection is not possible until pressure has decreased to a safe value below 5 bar.

The WEH® TW241 is equipped with a chloroprene front seal. Other sealing materials on request. It is the customer‘s responsibility to clarify the media compatibility.

Features

For connection onto straight tubes, sealing on the exterior diameter
Self-retaining up to max. 70 bar
Connection in seconds
No hand tightening required
WEH® Jaw Locking Mechanism
No seal adjustment required
Wide range of tube tolerances up to ± 0.25 mm
High-grade materials

Technical Data

Max. allowable operating pressure PS	Vacuum up to 70 bar (1,015 psi)
Temperature range	+5 °C up to +80 °C
Max. allowable surface finish of test piece	Rz8 μm
Max. allowable material hardness of test piece	28 HRC
Leak rate	1 x 10^-3 mbar x l/s
Actuation	Manual actuation via clamping lever
Material	Clamping jaws: Corrosion-resistant stainless steel, hardened Housing: Anodized aluminium
Sealing material	Front seal of chloroprene

Abbreviation	Definition
Pressure specifications

PN	Nominal pressure	Nominal pressure after temperature compensation at 15 °C
PS	Max. allowable operating pressure	Maximum allowable operating pressure acc. to Pressure Equipment Directive 2014/68/EU, Article 2 paragraph 8
PT	Hydrostatic test pressure	Hydrostatic test pressure acc. to Pressure Equipment Directive 2014/68/EU, Annex I no. 7.4
PP	Pilot pessure	Actuation pressure for hydraulic and pneumatic components
PC	Cracking pressure	Pressure at which the check valve opens and the first indication of flow occurs
WP	Working pressure	'Working pressure' means the maximum pressure to which a component is designed to be subjected to and which is the basis for determining the strength of the component under consideration
MAWP	Max. allowabl working pressure	Max. allowable operating pressure at which the weakest point of the system or the vessel (e.g. cylinder valve) can operate at a certain temperature during normal operation.

Dimensions
L1, L2, L3 ..	Length specification
D1, D2, D3 ..	Diameter specification
A/F(1), A/F(2) ..	Wrench size specification

Ports
A / X	Customer-specific port (test piece, sample, cylinder valve, hand wheel respiratory protective equipment)
B1, B2, B3 ...	Media ports
C1, C2, C3 ...	Gas recirculation ports
P1, P2, P3 ...	Pilot pressure ports
MA1, MA2 ...	Measuring ports
Q	Drain port filter
G	Mounting bores

Others
DN	Nominal size (DN) acc. to Pressure Equipment Directive 2014/68/EU, Article 2 paragraph 11
µm	Max. diameter of the filtered particle
Kv	Is the discharge of water in m³/h at a pressure drop of 1 bar, acc. to DIN/EN 60534-2
Cv	Is the discharge of water in gallons per minute at a pressure drop of 1 psi, acc. to DIN/EN 60534-2
IR	Infrared data interface
ENR	Exchangeable data interface (exchangeable nozzle receiver)
TS	Maximum allowable temperature acc. to Pressure Equipment Directive 2014/68/EU, Article 2 paragraph 9
NC	Normally closed (initial position of shut-off valve)
NO	Normally open (initial position of shut-off valve)

Term	Definition
Temperature range	Is the temperature range in which the WEH^® Product can be used.
Media temperature range	Is the temperature range of the medium used, which can flow through the WEH^® Product (may change depending on the time of measurement).
Ambient temperature range	Is the temperature range of the environment in which the WEH^® Product can be used.
Leak rate	Is the maximum external leak rate, which the WEH^® Product exhibits in delivery condition.
Internal leak rate	The internal leak rate depends, among other things, on type of application, medium and pressure difference on the WEH^® Product. On request it can be specified more precisely.
Max. side load	Is the max. allowable sum of all external forces that may act on the device under intended use.Note:External forces can affect the life time of WEH^® Products and can cause damage. Tensile and transverse loads as well as vibrations and pressure impacts need to be considered, e.g. by user side measures such as on site mountings and similar. Therefore, lateral forces such as whipping hoses or other equipment must be avoided. WEH^® Products should be installed in such a way, that lateral forces which could lead to leakage or damage can not occur.Special applications require a special consultation before selecting the product.
Products with pneumatic actuation	The customer has to ensure there is adequate axial movement when pneumatically actuated WEH® Products are used in automated systems, see maximum side load. Ideally the products should be mounted with a floating joint or introduced individually to prevent the possibly existing clamping jaws getting blocked or jammed in the thread of the test piece.
Sealing material	On request the WEH® Product can be adapted to customer specific applications regarding to the sealing materials used. The clarification of the media compatibility and suitability of the adapted WEH® Product for the final application is always the responsibility of the end user.
Storage / life time of components	There are certain requirements for every WEH® Product. WEH® Products are generally products which may be subject to wear and fatigue during operation and depending on your individual application/use. For details - in particular regarding the corresponding minimum inspection and maintenance intervals - please refer to the respective operating instructions for the WEH® Product.

Subject	Definition
Safe product selection	Our WEH® Products are designed to be operated by qualified professional users (insofar as WEH® Products are also designed to be operated by other users in individual cases, this is explicitly stated in the corresponding operating instructions). Please note that WEH does not know your system and therefore - also due to the large number of different potential applications of WEH® Products - cannot perform tests on all potential types of application. You alone are responsible for the selection, configuration and suitability of WEH® Products, especially according to the requirements of your system. Before purchasing WEH® Products, please particularly ensure that our products are compatible with your intended use, your performance data, your material and fluids, your system concept and your system limits according to our product specifications. Please also consider your technical and legal requirements for operation, handling and maintenance. The quality and safety of WEH® Products is our highest priority. For this reason, WEH® Products may not be used outside the specifications in the relevant data sheets and product descriptions. If you are not sure whether the WEH® Product is suitable for your system and intended use, please contact us in advance. We also strongly recommend that you refrain from using third-party spare parts or a combination of WEH® Products with unsuitable third-party products. You alone are responsible for reviewing the suitability of third-party products. WEH® Products and WEH® Spare parts comply with our quality and safety standards.
Explanation on the Pressure Equipment Directive	In general, WEH® Products with a maximum allowable operating pressure of more than 0.5 bar (PS) fall within the scope of application of the Pressure Equipment Directive 2014/68/EU, are generally classified as pressure accessories in accordance with Article 2 (5) of the same and are considered to be similar to piping. These WEH® Products may not be used as safety accessories. Furthermore, it is pointed out, that these WEH® Products are designed and placed on the market in accordance with the requirements of Article 4 (3) of the Pressure Equipment Directive 2014/68/EU. For some products a different classification and/or categorisation is required or can be conducted on request. In these cases, a conformity assessment procedure in accordance with Annex III of the Pressure Equipment Directive 2014/68/EU can and will be conducted (if legally required) and the conformity can be declared by means of an EU Declaration of Conformity in accordance with Annex IV of the Pressure Equipment Directive 2014/68/EU. In these cases, the EU Declaration of Conformity is enclosed with the product.
External change management	WEH reserves the right to update, optimise and adjust its products continuously. This may result in corresponding changes of the product. Customers will be informed proactively or unsolicited by WEH only in individual cases about product updates, product optimisations and/or product adaptations that have been carried out. You are free to contact WEH at any time to request information about any product updates, product optimisations and/or product adjustments.

Type	Pneumatic - NC	Pneumatic - NO	Manual
Shut-off valve
Shut-off valve with venting
Shut-off valve with check valve		-
Shut-off valve with venting and check valve		-

Application

Quick connect / disconnect TW241 for sealing on straight tubes and bores. Sealing on the external diameter Ø 6.0 mm up to 22.2 mm. Typical applications are pressure testing / vacuum testing / pressure decay testing / helium testing / underwater testing on components for HVAC-R industry / manufacturing industry / automotive industry:

Heat exchangers
Air conditioners
Heating systems
Pressure vessels
Valves
Transducers
Compressors
Condensers
Evaporation coils
Component and tubing systems
Cooling system for automotive industry
Water nozzles for engine testing

Downloads

Document type	Format	Size	Download
Datasheet	PDF	415 KB
Press release	PDF	0 B

Product Family

Fast test connections for straight tubes - WEH® TW241

The clamping lever actuated quick coupling TW241 for high pressure testing, leak testing and function testing of straight tubes sealing the exterior diameter. They offer the fastest way to connect and disconnect thanks to the WEH® Jaw Locking Mechanism and the easy to operate clamping lever. Just push to connect - no need for hand-tightening, no tapes, no thread sealants. The TW241 quick release coupling is mainly used for testing automotive and refrigeration air conditioning components - they are tested faster than ever before.

WEH® Connector TW241 for external straight tube diameters , clamping lever actuation, vacuum up to max. 70 bar - Product family

Definitions

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