Mechanical Pipe Plugs (with/without Bypass)
Mechanical Pipe Plug and Pipe Test Plug DN 12 - 90
Pipe stoppers based on nitrile rubber (water and oil resistant). With metal parts made of galvanized steel. Pipe plugs for shutting off and testing pipelines, suitable for internal pipe pressures up to 8 bar. Nominal width depending on model from 12 - 90 mm. Range of application depending on model from 11.8 mm - 99 mm. Plug length depending on model 20.0 - 40.0 mm. Pipe plugs are mechanical devices designed for the secure sealing, blocking, or testing of pipelines of various types. They are suitable for both short-term operations and extended applications in sewer systems, pipe rehabilitation projects, water and wastewater facilities, or industrial environments. Thanks to their robust construction, mechanical pipe plugs offer a reliable and durable solution for the temporary decommissioning or sealing of lines These plugs are installed directly inside the pipe and are securely pressed against the pipe wall - either through mechanical tension or via the contact pressure exerted by the rubber body. This creates a reliable seal without the need for compressed air or an external supply. Unlike inflatable pipe stoppers, mechanical pipe plugs do not require air inflation; consequently, they are particularly low-maintenance and offer excellent long-term stability. Each pipe plug covers a specific diameter range. For instance, a DN 50 pipe plug is typically suitable for pipe diameters ranging from approximately 48 to 55 mm. Precise details regarding the specific application range for each product can be found under the "Technical Details" section. A major advantage of mechanical pipe plugs is their exceptional long-term stability. Depending on the specific application and operating conditions, they can often remain inside the pipe for several days or weeks without requiring pressure replenishment or readjustment. This makes them ideally suited for extended construction phases, pipe rehabilitation projects, leak testing, or maintenance work in industrial facilities. Our pipe plugs are also available with a central bypass port. For work environments involving elevated temperatures - such as in heating systems or certain industrial processes - we also offer plugs that are temperature-resistant up to 230°C. To be observed: For internal pipe pressures > 1 bar the pipe stoppers must be secured against slipping out.
Mechanical Pipe Plug and Pipe Test Plug with Bypass DN 16 - 90
Pipe stoppers based on nitrile rubber (water and oil resistant), with bypass. With metal parts made of galvanized steel. Pipe plugs for shutting off and testing pipelines, suitable for backpressure up to 8 bar. Nominal width depending on model from 16 - 90 mm. Range of application depending on model from 15.6 mm - 99 mm. Plug length depending on model 20.0 - 40.0 mm. Advantages of Mechanical Pipe Plugs High pressure resistance – suitable for applications with increased back pressure. In general, pipe plugs and sealing discs must be secured against slipping out when internal pipe pressure exceeds 1 bar. Suitable for long-term use – depending on the application, they can remain safely installed inside the pipe for extended periods. Temperature-resistant versions available – ideal for applications involving higher temperatures or demanding operating conditions. Compact and space-saving design – perfect for tight pipe systems and hard-to-reach areas. Reusable and durable – robust materials ensure a long service life and allow for multiple uses.
Mechanical Pipe Plug DN 12 - 90, Temperature resistant up to 230°C
Pipe stoppers based on nitrile rubber (water and oil resistant). With metal parts made of galvanized steel. Temperature resistant up to 230°C. Pipe plugs for shutting off and testing pipelines, suitable for internal pipe pressures up to 8 bar. Nominal width depending on model from 12 - 90 mm. Range of application depending on model from 11.8 mm - 99 mm. Plug length depending on model 20.0 - 40.0 mm. To be observed: For internal pipe pressures > 1 bar the pipe stoppers must be secured against slipping out.
Shut-Off Discs with 1 Sealing Ring, Aluminium, with Central Wingnut DN 40 - 600
Mechanical shut-off disc with 1 sealing ring, with passage (1/2", 1" or 2") for shutting off and testing pipelines, mainly for pressureless sealing. Our pipe shut-off discs are suitable for all types of pipes and are resistant to service water and waste water. The passage discs have a screwed-on inspection cover with sealing ring. Materials: sealing ring made of NR rubber and disc made of aluminium. Available nominal widths from DN 40 - 600. Materials: Seal ring made of NR rubber and disc made of aluminum. Available nominal diameters range from DN 40 to DN 600. The maximum back pressure varies depending on the diameter, between 2.0 and 0.2 bar. Common applications of our sealing discs include: Sealing aquariums and ponds (also available without copper components) Sealing gas pipelines in industrial environments Base component for structural installations, e.g., for centering Sealing off dead-end pipes Pressure testing of heating pipes Sealing pipes in power plants and heating systems (silicone version suitable for up to 230°C) Sealing short pipes or where space is limited inside the pipe Leak testing in confined spaces
Shut-Off Discs with 1 Sealing Ring, Steel Version, with Central Wingnut DN 40 - 450
Mechanical shut-off disc with 1 sealing ring, with passage (1/2" and 1") for shutting off and testing pipelines, mainly for pressureless closing. Our pipe shut-off disks are suitable for all types of pipes and are resistant to service and waste water. The passage discs have a screwed-on inspection cover with sealing ring. Materials: sealing ring made of NR rubber and disc made of steel. Available nominal widths from DN 40 - 450. Materials: Sealing ring made of NR rubber and disc made of steel. Available nominal diameters range from DN 40 to DN 450. The maximum back pressure varies depending on the diameter, between 2.0 and 0.3 bar.Common applications of our shut-off discs include: Sealing aquariums and ponds (also available without copper components)Sealing gas pipelines in industrial settingsBase element for construction, e.g., for centeringSealing off dead-end pipesPressure testing of heating pipesSealing pipes in power plants and heating systems (silicone version withstands up to 230°C)Sealing short pipes or where space is limited inside the pipeLeak testing in confined spaces
Mechanical Pipe Plug and Pipe Test Plug with Bypass DN 16 - 90, Temperature resistant up to 230°C
Pipe stoppers based on nitrile rubber (water and oil resistant), with bypass. With metal parts made of galvanized steel. Temperature resistant up to 230°C. Pipe plugs for shutting off and testing pipelines, suitable for internal pipe pressures up to 8 bar. Nominal width depending on model from 16 - 90 mm. Range of application depending on model from 15.6 mm - 99 mm. Plug length depending on model 20.0 - 40.0 mm. To be observed: For internal pipe pressures > 1 bar the pipe stoppers must be secured against slipping out.
Big Pipe Shut-Off Disc with Bypass and Multi Closure, 0.2 to 0.3 bar, NR Sealing Ring
Pipe Shut-Off Disc DN 425 - 575 with Multi Closure and 1 Sealing Ring. Mechanical pipe shut-off with 2" Bypass. Suitable for all types of pipelines, water resistant. Maximum back pressure: 0.2 - 0.3 bar. Material: Disc made of steel with aluminium coating, Sealing ring made of natural (NR) rubber.
Shut-Off Discs with 2 Sealing Rings, Steel, with Central Wingnut DN 40 - 400
Mechanical shut-off disc with 2 sealing rings, with passage (1/2" or 1") for shutting off and testing pipelines, mainly for pressureless closing. Our pipe shut-off disks are suitable for all types of pipes and are resistant to service and waste water. The passage discs have a screwed-on inspection cover with sealing ring. Materials: Sealing rings made of NR rubber and disc made of steel. Available nominal sizes: DN 40 – 400.Maximum permissible back pressure: Depending on the nominal size, the maximum permissible back pressure ranges from 2.0 bar to 0.3 bar.Typical applications of our shut-off discs:Sealing aquariums and ponds (also available in a copper-free version)Sealing gas pipelines in industrial applicationsBase plate for pipe construction, e.g. for centringSealing dead-end pipelinesPlugging heating pipesSealing pipes in power plants and heating systems (silicone version available up to 230 °C)Sealing short pipe sections or two pipes placed inside one anotherLeak testing where installation space is limited
Aluminum shut-off disc with bypass, two sealing rings, 40-400 mm
Mechanical shut-off disc with 2 sealing rings, with bypass (1/2" or 1") for shutting off and testing pipelines, mainly for pressureless closing. Our pipe shut-off disks are suitable for all types of pipes and are resistant to service and waste water. These bypass discs have a screwed-on inspection cover with sealing ring. Materials: sealing rings made of NR rubber and disc made of aluminium. Available nominal widths (inner diameter): 40 - 400 mm.