Quick-release fasteners
To ensure smooth operation and minimal downtime for your pressure vessels, we manufacture precisely engineered Safe quick-release fasteners for the highest pressure loads.
Opens in seconds; permanently tight seal
Our designs guarantee safe opening and closing in a matter of seconds and are robust enough to withstand the highest operating pressures and frequent load cycles over the long term. Our quick-release fasteners ensure maximum safety, precise manufacturing, and reliable sealing—even under high pressures, pressure surges, and thermal cycles. Thanks to minimal manufacturing tolerances, the fastener mechanism retains its dimensional stability even under extreme loads.
Closure Types: An Overview of Our Solutions
Choosing the right type of closure is crucial for the operational safety and longevity of your system. We combine precision manufacturing with high-quality materials to guarantee a completely leak-tight solution for every medium.
Decades of experience in every aspect
The BDG quick-release fastener is the result of advanced technology and in-depth expertise in equipment manufacturing. It was developed to drastically reduce downtime and lower your operating costs in the long term. Behind every closure are qualified experts and an exceptional scope of services, ranging from the initial design drawing to final acceptance. Put your trust in a system that perfectly combines safety and cost-effectiveness.
- Dimensions: DN 200 to DN 3000
- Execution: For horizontal and vertical vessels
- Materials: Preferably carbon steel; other materials available upon request
- Pressure range: Up to over 500 bar, depending on diameter
- Usage: Manual opening and closing via a rack-and-pinion mechanism
Possible additional services
Lid and Closure Systems: Can be welded to shells or bolted to flanges; hydraulic systems for opening, closing, swiveling, or tilting
Operations & Automation: Hand pump and manual valve operation; partially or fully automated systems with a hydraulic power unit and control system
Protection & Durability: Corrosion protection for sealing surfaces (e.g., weld cladding); wear protection for teeth; protective cover against weather and dirt
Sealing systems: Various sealing systems, adapted to the respective operating conditions
quality assurance (QA)
quality assurance (QA) At our company, a team of in-house certified inspectors handles this, covering a broad spectrum non-destructive and destructive testing methods, precise 3D measurement, and complete batch traceability. This ensures that every component meets our quality standards and complies with applicable regulations.
For a comprehensive and audit-ready Documentation Handled by our own team. All materials, components, and filler metals remain traceable; all documentation is stored in an audit-proof manner and prepared in accordance with standards and individual customer requirements.
Design in accordance with standards
- Design of pressure vessels in accordance with all standards using Dimy6
- Design of pressure vessels according to ASME U and U2 using Compress 2025
- Design of pressure vessels in accordance with AD2000 and EN13445 using Sant'Ambrogio NextGen 2025
- FEM and CFD in accordance with all standards using ANSYS Mechanical Pro and Fluent 2025 R1
- FEM analysis in accordance with all standards using Nozzle-Pro 15
- Design of flanges according to EN 1591-1 using TEMESfcal
- Design of pressure vessels using PTC Creo
Carbon, stainless, and duplex steels
Carbon steels
P 265 GH, P 355 GH, P 355 NH, P 355 NL1, 16 Mo 3, 13 CrMo 4-5, 10 CrMo 9-10, 15 NiCuMoNb 5-6-4, SA-516 Gr. 60, SA-516 Gr. 70, SA-350 LF2, and SA-387 Gr. 11
Stainless steels
1.4301, 1.4541, 1.4571, 1.4539, SA-240-304, SA-240-321, SA-240-316 Ti, and SA-240-904 L
Duplex steels
1.4462 and SA-240 - 318 LN
Any questions? We’re here to help you personally.
At WOLF Behälter- und Apparatebau, you and your projects are our top priority. You can always count on our consistently high product quality and our comprehensive service.
Kai Jaspert
Leiter Vertrieb
Frequently Asked Questions About Our Quick-Release Closures
Our BDG quick-release fasteners were developed to enable the safe, fast, and cost-effective opening and closing of equipment and systems. This helps reduce downtime and lower operating costs in the long term.
Do you also offer custom solutions? + − Yes, we offer custom quick-release solutions that are precisely tailored to the requirements of your vessels or equipment. Contact us, and together we’ll develop the right solution for your application.
Yes, we offer custom quick-release solutions that are precisely tailored to the requirements of your vessels or equipment. Contact us, and together we’ll develop the right solution for your application.
How can I order a quick-release coupling from R.J. Wolf GmbH? + − To order a quick-release coupling, you can contact us directly via the inquiry form on our website or call our sales team. We’d be happy to advise you and provide a customized quote.
To order a quick-release coupling, you can contact us directly via the inquiry form on our website or call our sales team. We’d be happy to advise you and provide a customized quote.
What are the advantages of Wolf GmbH’s quick-release fasteners? + − - High pressure resistance for various applications (up to 800 bar).
- A wide range of sizes and models tailored to different requirements.
- Robust materials such as stainless steel and carbon steel for long service life and high durability.
- User-friendly opening mechanisms that enable quick and easy handling.
- An experienced team and customized solutions that meet your specific requirements.
- High pressure resistance for various applications (up to 800 bar).
- A wide range of sizes and models tailored to different requirements.
- Robust materials such as stainless steel and carbon steel for long service life and high durability.
- User-friendly opening mechanisms that enable quick and easy handling.
- An experienced team and customized solutions that meet your specific requirements.
What sets the segment closure apart? + − The segment closure is specifically designed for vertical vessels and medium to large diameters (DN 500 – DN 2000). With a maximum pressure rating of 800 bar and easy operation via a handwheel or one-hand quick-release lever system, the segment closure offers a fast and reliable solution.
The segment closure is specifically designed for vertical vessels and medium to large diameters (DN 500 – DN 2000). With a maximum pressure rating of 800 bar and easy operation via a handwheel or one-hand quick-release lever system, the segment closure offers a fast and reliable solution.