faq – frequently asked questions

general questions on the company

What advantages does WALTHER offer?
  • Over 90 years experience
  • Efficiency increase
  • High value products
  • Robust, reliable technology at the highest quality level in over 400,000 variants
  • Diverse series programme
  • Tailor-made, individualised solutions
  • Resources and environmental protection
  • Made in Germany
Where can I purchase WALTHER products?

Contact us directly at WALTHER-PRÄZISION or
talk to the responsible talk to the responsible Area manager in Germany
the responsible support centre in your country
WALTHER-PRÄZISION is available to assist you with over 50 national and international support centres.

Quality standards at WALTHER-PRÄZISION?

WALTHER has a certified quality management according to:

  • DIN EN ISO 9001
  • DIN EN ISO 13485
  • Customised, special qualifications
Sustainability at WALTHER-PRÄZISION?

Resource conservation and ethical behaviour have highest priority at WALTHER. Please note our Guidelines for sustainability..

Environmental management at WALTHER-PRÄZISION?

WALTHER implements Environmental management according to DIN EN ISO 14001.


HSE (Health Safety Environment) are among the most important resources at WALTHER. Please note our HSE-Policy for download.


What information is needed for an offer?
  • Number of coupling sides and number of nipple sides
  • Desired nominal sizes, operating pressure, medium and connection information
  • Alternatively, of course, our order number or identnumber
  • Please send enquiries to anfrage@walther-praezision.de
  • Please send your orders to order@walther-praezision.de
Is WALTHER an Authorised Economic Operator [AEO]?

Yes, with the AEO certificate EN-AEOC 110395.

What DUNS® number does WALTHER-PRÄZISION have?


Which countries of origin do WALTHER products have?

Products by WALTHER PRECISION are “Made in Germany”.

Can I get a long-term supplier's declaration (LLE) from you according to Regulation (EC) No. 1207/2001?

We will be happy to issue you a LLE. Please contact our Dispatch Department:

Which tariff number is assigned to products from WALTHER-PRÄZISION?

WALTHER products are assigned the tariff number 84818099. Any exceptions will be named / identified.

Are your products subject to the issue of an export permit?

Basically, our products are not subject to export authorisation and are generally not included in the dual-use regulation or the export list according to Annex I of the Regulation (EC) No. 1334/200. Please contact our Dispatch Department if necessary.
The respective exporter is obliged to check whether it is necessary to obtain an export license!

What is an EORI number?

The EORI number plays a secondary role for our German and EU- customers as consignees of our goods. For these customers the VAT-ID number applies. When we ship goods to a consignee in a non-EU country, the EORI number is used for customs clearance.

Do your products contain US products in accordance with the American foreign trade law?


Do your products contain so-called conflict minerals?

The raw materials regularly used by WALTHER-PRÄZISION Carl Kurt Walther GmbH & Co. KG generally contain no additives of conflict minerals in accordance with standard specifications.

Can I get a digital order confirmation?

Yes, we ship this to your e-mail address as a pdf file. You will also receive an advise of dispatch prior to the actual dispatch of the product.

Which parcel service providers / forwarders do you work with?

We usually ship packages up to 31.5 kg with UPS; freight deliveries are sent with Schenker Deutschland AG.

If you want to use your own parcel service, we can commission the following companies:

We do not work together with any other parcel service providers.

However, you can hire any company to pick up your order from us. In this case, we need the name and the address of your freight forwarder, as well as an email address to which we can send the collection order. Because a day usually lies between ordering and pick up, the delivery time of your shipment will be extended by a day.

How is CARRIAGE FORWARD shipping organised?

For the carriage forward shipping, we need your customer number from the companies listed below.

We do not work together with any other parcel service providers. However, you can hire any company to pick up your order from us. We are happy to give freight deliveries to other forwarders but not our company forwarder Schenker.

In this case, we need the name and the address of your freight forwarder, as well as an email address to which we can send the collection order. Because a day usually lies between ordering and pick up, the delivery time of your shipment will be extended by a day.

Do you ship on our behalf to third parties and abroad?

Yes, WALTHER-PRÄZISION will however be named as the sender/consignor.

Any additional costs incurred will be charged.

Do you offer express shipping?


Next day delivery by 12:00 on demand by 14:00
Next-day delivery by 10:30 on demand by 14:00
Next day delivery by 08:30 on demand by 14:00

Any additional costs incurred will be charged.

What are your pick-up times if I want to pick up the ordered products personally?

Our Dispatch Department has the following opening hours:

Mon. – Thur. 8:00 – 16:00 (break 12.00 – 12.30)
Fri. 8:00 – 12:00.

Please refer to our company bridging day regulations, if applicable.

questions about service/returns

Important service contacts

Application advice:

  • Mono-couplings / Multi-couplings / Spareparts Image+49 (0) 2129 / 567 – 4020

  • Tool changer Image+49 (0) 2129 / 567 – 5000


Commissioning service: Image+49 (0) 2129 / 567 – 5000


Delivery service: Image+49 (0) 2129 / 567 – 4020


Maintenance / Servicing: Image+49 (0) 2129 / 567 – 5000


Exchange / Complaints / Repairs: Image+49 (0) 2129 / 567 – 4040


Service-mail:  Image service@walther-praezision.de

What should be considered when returning goods?
  • Please fill in the Return bill of ladingcompletely and enclose with the goods.
  • Delivery address: Carl Kurt Walther GmbH & Co. KG, Westfalenstraße 2, 42781 Haan, Germany.
What should be considered when returning used / contaminated fittings?
  • Please fill in the Return bill of lading completely and enclose with the goods.
  • Delivery address: Carl Kurt Walther GmbH & Co. KG, Westfalenstraße 2, 42781 Haan, Germany.
  • Clean goods of any pollutants.
  • Enclose safety data sheet!
What are the fees for inspections of returns?

As a rule, inspections done along with a cost estimate are usually free of charge.

Did you order the wrong parts?
  • Please fill incompletely and enclose with the goods.
    the Return bill of lading completely and enclose with the goods.
  • Delivery address: Carl Kurt Walther GmbH & Co. KG, Westfalenstraße 2, 42781 Haan, Germany.
  • Please contact your office-based sales representative (see order documents).
  • Processing costs may apply.
Does WALTHER provide on-site services?

Yes, this includes, for example:

  • Consulting services by our field service or product specialists directly from the principal company
  • Repair and maintenance services
  • Training measures
How long is the delivery time for catalogue goods?

We usually deliver goods from the catalogue within a few working days. In individual cases, our telephone sales on the telephone number: +49 (0) 2129 / 567-4000 can quickly give you concrete information.

How do I find the prices for catalogue goods?

Please ask for our price list or contact our telephone sales on the telephone number: +49 (0) 2129 / 567-4000.

How can I make changes in my order?

Order changes are possible in written form at any time. Depending on the type of order change and also the stage of the order process, order changes unfortunately cannot always be carried out free of charge. Please contact our telephone sales for change requests as quickly as possible on the telephone number: +49 (0) 2129 / 567-4000.

Can I get information on catalogue merchandise over the phone?

Yes, our telephone sales is available during our normal office hours as your competent partner on the telephone number: +49 (0) 2129 / 567-4000.

What has to be considered regarding the design and operation of quick connect couplings?

WALTHER-PRÄZISION – quick coupling systems are designed by experts for the application in professional environments and are characterized by their robustness and well thought-out design. For the safe operation of correctly dimensioned connecting systems the usual technical rules apply. You will find detailed information under „Safety Instructions“.

technical questions

How are the order numbers for WALTHER-PRÄZISION organised?

Please refer to our Product key.

What is a monocoupling?

Monocouplings allow the quick and safe connection or disconnection of a single line.

A mono coupling consists of two elements; the coupling and the nipple. Frequently, the two parts are referred to as “male and female”, “mother and father part” or “socket and plug” because of their plug principle.

What does nominal diameter mean?

The nominal diameter is the diameter of a circular surface in place as a minimum throughout the flow line of the fitting.

What is a multicoupling?

Multicouplings enable the quick, safe and simultaneous connection or disconnection of several fluidic and electrical lines by manual, pneumatic or hydraulic force. They are used wherever several lines (cable bundles) must be coupled.

Due to the fixed arrangement of the coupling elements, connection mistakes can be ruled out and the duration of the coupling process is greatly shortened. Multicouplings are used where automated operating procedures during manufacturing, testing, actuating and controlling are requested.

What is a docking system?

Docking systems are automatically actuated multi-couplings, enabling the simultaneous and automatic connection or disconnection of several fluidic and electrical lines pneumatically, hydraulically or electrically.

What is a tool changer?

A tool changer consists of a robot-side mounted half and usually several halves each mounted on one robot tool.

The robot tools are parked in parking stations and picked up by the robot as required.

A robot thus becomes a working system with a variety of different tools as all the required media, forms of energy and control signals can be transmitted from the robot to the various tools by the tool change system.

Due to its modular design, such a WALTHER tool changing system can be configured according to individual customer requirements, for example with the WALTHER safety circuit “WASI 2”, and offers application possibilities in automated production lines (e.g. automotive industry).

Which sealing materials are used?

Primarily, elastomers are mainly used due to their reversible features in dynamic and static applications. In special application cases, thermoplastics and/or metallic seals are used, too.

In which temperature area can quick coupling systems be used?

WALTHER quick couplings cover a temperature range from – 253 °C up to + 800 °C, depending on material combination and construction type.

Where can I find performance charts and flow coefficients for fittings?

You can find the performance charts with factor Cv values (flow coefficients) in the technical catalogue at the end of each series chapter and in the series brochures.

What documented production does WALTHER offer?
  • DIN EN ISO 10204 (certificate 3.1) up to the batch documentation of individual parts
  • EN 10204
  • upon consultation…
Which test methods does WALTHER use?

Each coupling is 100% tested before shipping for seal tightness and function!
Our test facility features a wide range of testing options, for example:
– Helium leak detector
– Climatic test chamber
– External pressure testing devices
– Internal pressure test benches
– Leak test stands (including vacuum)
– Connection cycle test systems
– Flow test benches
– Dynamic load test stand.

We will gladly test according to customer specifications also as part of a joint acceptance with our customers.

How do I get technical advice?
What CAD file formats can I get from WALTHER?

Format 3D:

  • STEP
  • IGES 3D
  • TIF

Format 2D:

  • DXF
  • DWG
  • IGES
  • TIF
  • Please use the contact “CAD Data Request”.

    Which pressure types do we classify?

    The flow pressure is the working pressure which is generated when the valves/slides are open, i.e. when the medium flows. This must be differentiated from static working pressure, which is read by a manometer in front of a closed valve/slide. The flow pressure is always lower than the static working pressure.

    What does media pressure mean?

    The media pressure is the internal pressure generated by a flowing or static medium in a fitting.

    What is the Kv value / Cv value?

    The Kv or Cv value is a flow coefficient indicating the flow volume per time unit in relation to the expected pressure drop of a pipe system. The KV value is the equivalent of the American Cv value, transferred to European controlling units. Cv = 1.167 x Kv