WEH® Connector TW42 for filling medical oxygen cylinders with Pin-Index system - Product family

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For Pin-Index connections acc. to CGA 870
(others on request)

Version for residual pressure valves or non-residual pressure valves available

Super light -> only 700 grams

Open bow body for connection in seconds

Pressure-assisted piston prevents accidental disconnection under pressure

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WEH® Connector TW42 for filling medical oxygen cylinders with Pin-Index system - Product family

SKU:2965634

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WEH® TW42 | Function

The WEH® quick connect TW42 is an easy-to-operate yoke connector. Only place the quick release coupling over the CGA 870 cylinder valve. Align the index pins with the counter bores and move the clamping lever upwards. The pressure-tight connection is established.

Description

WEH® Connector TW42 for filling medical oxygen cylinders with Pin-Index system - Product family

The WEH® TW42 filling connector has been specially developed for filling of gas cylinders using a pin-index system with medical oxygen. It is designed for a nominal pressure of 200 bar and available for residual and non-residual pressure valves. For gas cylinders with residual pressure valve, the CGA 870 connector is also fitted with an RPV pin to open the residual pressure valve.

Made of corrosion resistant stainless steel and brass, the filling connector is extremely robust and durable. Its weight of only 700 g makes it very easy to handle.

With its bracket housing, which opens from the side, the quick connector is easy to connect to its cylinder valve. Simply place the connector around the cylinder valve so that the coding pin is positioned opposite the bore holes on the cylinder valve and actuate the clamping lever. The pressure-tight connection has now been established, with no need for laborious screwing and unscrewing. This also allows connection to the cylinder valve using a large handwheel with a manometer positioned at its side.

The pressure-assisted piston ensures a secure connection, as it is not possible to remove the filling connector while it is under pressure. This ensures the highest possible level of safety for the operator.

Save time and increase your productivity by using this unique pin-index connector. It is available for gas cylinder valves conforming to CGA 870, and for other valves upon request. All connectors are oxygen cleaned, and are free of oils and greases (oxygen tested).

Features

For Pin-Index connections acc. to CGA 870
(others on request)
Version for residual pressure valves or non-residual pressure valves available
Super light -> only 700 grams
Open bow body for connection in seconds
Pressure-assisted piston prevents accidental disconnection under pressure
High-grade materials

Technical Data

Nominal pressure PN	200 bar (3,000 psi)
Max. allowable operating pressure PS	250 bar (3,600 psi)
Temperature range	+5 °C up to +60 °C (O₂)
Medium	Medical oxygen (others on request)
Actuation	Manual actuation via clamping lever
Design	With or without RPV pin
Material	Corrosion resistant stainless steel and brass
Sealing material	EPDM
Conformity / Tests / Approvals	Type approval for suitability against adiabatic compression available

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 Connector for filling of gas cylinders with Pin-Index system (with or without a residual pressure valve).

Downloads

Document type	Format	Size	Download
Datasheet	PDF	239 KB

Product Family

Fast fill connection for medical oxygen cylinders with Pin-Index System - WEH® TW42

For fast & easy connections for medical oxygen filling applications WEH offers the clamping lever actuated quick coupling TW42. It is the ideal fitting of high pressure filling of CGA 870 gas cylinders with medical oxygen. They offer quick connect and quick disconnect. Just push to connect – no twist, no turn. Mainly used for filling of gas cylinders with Pin-Index Systems. The quick release coupling is available with or without RPV-Pin.

WEH® Connector TW42 for filling medical oxygen cylinders with Pin-Index system - Product family

Definitions

Technical explanations

Further explanations

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