Stainless steel blank-end coupling with fluoroelastomer seal, DIN 3489, with or without chain, max. PN 16
Blank-end coupling from Krause K+K made of V4A / 1.4401 / AISI 316 stainless steel with an FKM/FPM seal and a 42 mm claw spacing. Corrosion-resistant, max. PN 16, and available with or without a chain.
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Stainless steel blank-end coupling with fluoroelastomer seal, DIN 3489, with or without chain, max. PN 16 - without chain is in stock and will be shipped as soon as it is available again
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Questions & Help
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Leasing & Rent-to-Own
Leasing & Rent-to-Own
We offer leasing and rent-to-own financing options exclusively to business owners, tradespeople, and the self-employed for selected products with a net merchandise value of €1,000 or more. Below you will find the key differences between these two financing options.
Leasing
In a lease, the product is made available to the lessee for use in exchange for regular lease payments. The lessor is responsible for accounting for the lease. The lease payments can generally be claimed as business expenses for tax purposes. These are gross payments, and value-added tax is charged throughout the entire term. At the end of the agreed-upon basic lease term, it is generally possible to purchase the product.
Hire Purchase
Hire purchase is economically equivalent to installment purchase. The product is capitalized on the hire purchaser’s balance sheet and depreciated in accordance with the official depreciation tables. Upon payment of the final hire purchase installment, ownership of the item is transferred to the hire purchaser. Value-added tax must be paid in full with the first hire purchase installment (transitory item).
Shipping & Delivery
Shipping & Delivery
Depending on the size, weight, and nature of our goods, they are shipped either via parcel service or freight carrier. We select the shipping method at our reasonable discretion.
The delivery times listed in the online store are non-binding estimates, unless a binding delivery date has been expressly confirmed in writing. They are based on the information available from our manufacturers, suppliers, and logistics partners at the time the order is placed.
Most of the products offered are shipped directly from the manufacturer or from external central warehouses (direct shipping). As a result, delivery times may differ from the estimated times provided. Delivery delays may occur, particularly in the event of material shortages, production delays, supply bottlenecks, force majeure, or other circumstances beyond our control.
Disclaimer:
We assume no liability for delivery delays resulting from circumstances beyond our control. This applies in particular to delays caused by manufacturers, suppliers, shipping companies, or other third parties. Liability for any resulting damages—in particular for indirect damages, consequential damages, or lost profits—is excluded to the extent permitted by law.
Partial deliveries are permitted, provided they are reasonable for the customer. This does not result in additional shipping costs, unless otherwise agreed.
The exact delivery time for an item can be provided on an individual basis upon request, either before or after the order is placed.
Please contact us by phone at +49 (0)2551 5030 or by email at shipping@strahltechnik-express.de.
In the event of significant delivery delays, we will inform the customer immediately. The customer’s mandatory statutory rights remain unaffected by this.
Stainless steel blank-end coupling with fluoroelastomer seal, DIN 3489, with or without chain, max. PN 16 - without chain is in stock and will be shipped as soon as it is available again
Krause K+K Stainless Steel blank-end coupling DIN 3489 – V4A with FKM/FPM seals
The stainless steel blank-end coupling from Krause K+K is designed to securely seal open connections within the corrosion-resistant 42-mm claw coupling system. It is suitable for professional compressed air systems that have increased requirements for material and media resistance.
The coupling body is made of V4A stainless steel / material 1.4401 / AISI 316 and is equipped with an FKM/FPM fluoroelastomer seal. The claw spacing is 42 mm, and the maximum operating pressure is PN 16. Depending on the variant, the blank-end coupling is available with or without a chain. The chain keeps the lock attached to the connection and reduces the risk of it being misplaced or lost after opening.
Benefits
✅ V4A stainless steel / 1.4401 / AISI 316
✅ FKM/FPM fluoroelastomer seal
✅ 42 mm claw spacing
✅ Corrosion-resistant sealing solution
✅ Optional: with or without a chain
✅ For demanding industrial environments
✅ Reusable caps for open compressed-air connections
✅ Maximum operating pressure PN 16
Technical Specifications
| Feature | Value |
|---|---|
| Translation | blank-end coupling |
| Coupling system | DIN 3489 |
| claw spacing | 42 mm |
| Material | Stainless Steel V4A / 1.4401 / AISI 316 |
| Gasket | Fluoroelastomer FKM/FPM |
| operating pressure | max. PN 16 |
Variants
| Translation | Item No. / SKU |
|---|---|
| without chain | 008-00-VA |
| with chain | 008-01-VA |
How It Works and Compatibility
✔ Seals an open connection of the corresponding 42-mm claw coupling system
✔ As with the other claw couplings, locking is achieved by turning the connection
✔ Standardized 42-mm coupling head within the corresponding stainless steel series
✔ The version with a chain keeps the connector readily available at the designated connection point
✔ FKM/FPM seal complements the corrosion-resistant V4A coupling body
Applications
✔ Chemical and Petrochemical Industry
✔ Compressed air systems susceptible to corrosion
✔ Seal open connections on manifolds and systems
✔ Mechanical and Plant Engineering
✔ Professional compressed air systems with stainless steel components
FAQ
What type of stainless steel is used?
V4A / Material 1.4401 / AISI 316.
Which gasket is installed?
Fluoroelastomer FKM/FPM.
What is the maximum operating pressure?
PN 16.
What is the claw spacing of the blank-end coupling?
42 mm.
What is the purpose of the chain-type version?
The chain holds the cap in place at the connection and reduces the risk of it getting lost when opened.
When is the stainless steel version a good choice?
For applications with increased requirements for corrosion and media resistance.
Conclusion
The Krause K+K stainless steel blank-end coupling (DIN 3489) is a robust and corrosion-resistant solution for securely sealing open compressed-air connections. V4A stainless steel, an FKM/FPM seal, a 42 mm claw spacing, and PN 16 make it particularly well-suited for demanding industrial environments.
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