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    • Pressure Covers
      • Products
      • Round Pressure Cover up to 8/-1bar
        Round Pressure Cover up to 8/-1bar

        The Round Pressure Cover can be used universally. With the versatile options, it can be optimally adapted to your respective process.

        More Details 1.1_Runder_Druckverschluss_bis_8_bar
      • Round Pressure Cover over 10/-1bar
        Round Pressure Cover over 10/-1bar

        This round pressure cover uses the same design as the 8 bar version. However its wall thicknesses are laid out stronger to withstand the higher operating pressures. 

        More Details 1.2_Runder_Druckverschluss_ab_10_bar
      • Round Pressure Cover up to 8/-1bar, Type RPDC-3A
        Round Pressure Cover up to 8/-1bar, Type RPDC-3A

        Our 3A Round Pressure Dome Cover, model RPDC-3A, has been tested and approved in compliance with the American 3-A Standard. The 3-A symbol is engraved on the finished cover as a conformity symbol for this version. Seal, seal groove, surface, flange contour, etc. conform to the requirements of 3-A Standard 84.

        More Details 1.3_Runder_Druckverschluss_bis_8_bar_Typ_RPDC_3A
      • 1-bar -Cover up to 1/-1bar
        1-bar -Cover up to 1/-1bar

        The 1-bar cover is our light-duty pressure cover. It can be used for pressure ranges of +1 to -1 bar. The standard version is laid out for temperatures up to 150°C (or higher on request). 

        More Details 1.4_1_bar_Verschluss
      • Pressure Cone-Cover up to 6/-1bar
        Pressure Cone-Cover up to 6/-1bar

        This conical cover is frequently used for beer tanks as outlet opening in the tank. It is possible to produce this cover with completely conical flanges ensuring a sterile seal.

        More Details 1.5_Druck_Konusverschluss_bis_6_bar
      • Oval Pressure Cover up to 10/-1bar
        Oval Pressure Cover up to 10/-1bar

        Oval pressure covers are frequently used on vessels with limited space. Production of these covers is more expensive than round pressure covers.

        More Details 1.6_ovaler_Druckverschluss_bis_10_bar
      • Automatic Pressure Cover up to 8/-1bar
        Automatic Pressure Cover up to 8/-1bar

        Fully automated processes also require a tank seal with fully automatic function. This version of our pressure cover can be operated pneumatically (standard), as well as hydraulically or electrically.

        More Details 1.7_automatischer_Druckverschluss_bis_8_bar
    • Glass Covers
      • Products
      • Glass-Cover up to 12/-1bar
        Glass-Cover up to 12/-1bar

        Do you need a filling opening or observation glass (if necessary with illumination and wiper) all hinge-mounted?
        Our glass pressure cover was developed especially for this purpose.

        More Details 2.1_Glas_Deckel_bis_12_bar
      • Glass-Cover with Metasglasspane up to 12/-1bar
        Glass-Cover with Metasglasspane up to 12/-1bar

        Similar to the Glass Pressure Cover, the Meta Glass Cover also serves as an observation window or small opening for taking samples from the vessel.

        More Details 2.2_Glas_Deckel_mit_Metaglas_Platte_bis_12_bar
      • Meta-Flange-Sightglass up to 10/-1bar
        Meta-Flange-Sightglass up to 10/-1bar

        Here it was important for us to keep the height of the flange as low as possible to improve CIP cleanability of the cover. When the cover is closed the toggle bolts are positioned in the slots and screwed down with the plastic star handles with knurled washer.

        More Details 2.3_Meta_Flansch_Schauglas_bis_10_bar
      • Pressureless Glass-Cover
        Pressureless Glass-Cover

        This tank seal serves as an observation and access opening for pressureless vessels. This seal is not intended for side installation in the vessel wall. It is frequently used in breweries to allow better observation of the processes through the large opening.

        More Details 2.4_Glas_Deckel_drucklos
    • Oval Covers (Inside opening)
      • Products
      • Manhole-Cover 340x440
        Manhole-Cover 340x440

        This cover is used primarily in storage tanks in the beverage industry. It seals from the inside, however its oval shape also allows it to be removed from the tank.

        More Details 3.1_Mannlochverschluss_340_x_440
      • Manhole-Cover 410x510
        Manhole-Cover 410x510

        On this units, a flat plate installed on the inside serves as the cover. A groove for an O-ring seal is incorporated into the cover. The quality of the seal can be adapted as required

        More Details 3.2_Mannlochverschlss_410_x_510
      • Handhole-Cover 190x240
        Handhole-Cover 190x240

        The oval handhole cover serves as a small revision opening for vessels and pipelines. It is available with or without PED certification and can be used for pressures up to 3 bars depending on the version. 

        More Details 3.3_Handlochverschluss_190_x_240
    • Pressureless Covers
      • Products
      • Pressureless Dome-Covers with Crossarm and Profile-Gasket
        Pressureless Dome-Covers with Crossarm and Profile-Gasket

        This cover serves for sealing tanks air-tight. When screwed in, the profile gasket presses against the inside of the cover, forming the seal.

        More Details 4.1_Drucklose_Domdeckel_mit_Zentralbuegel_und_Profildichtung
      • Pressureless Dome-Cover with Crossarm and O-Ring-Gasket
        Pressureless Dome-Cover with Crossarm and O-Ring-Gasket

        This cover is designed for pressureless operation and installation above the level of the liquid. The crossarml with just one single bolt, makes opening and closing the cover particularly quick and easy.

        More Details 4.2_Drucklose_Domdeckel_mit_Zentralbuegel_und_O_Ringdichtung
    • Aseptic-Line Covers
      • Products
      • Aseptic-Line up to 0,49/-1bar (without PED)
        Aseptic-Line up to 0,49/-1bar (without PED)

        This cover has a seal flush with the vessel-wall, eliminating dead space. This version is suitable for pressureless vessels not requiring PED certification.

        More Details 5.1_Aseptic_Line_Verschluss
      • Aseptic-Line up to 6/-1bar (with PED)
        Aseptic-Line up to 6/-1bar (with PED)

        This cover has a seal flush with the vessel-wall, eliminating dead space. This version is suitable for pressure vessels with PED certificaion.

        More Details 5.1_Aseptic_Line_Verschluss
    • DIN-Covers
      • Products
      • DIN Cover acc. DIN28124 Part 3
        DIN Cover acc. DIN28124 Part 3

        Stainless steel covers complying to DIN28124-3 for pressure vessels and equipment in technical processing plants. 

        More Details 6.1_DIN_Verschluss_nach_DIN_28124_Teil_3
      • DIN Cover acc. DIN28125 Part 1
        DIN Cover acc. DIN28125 Part 1

        Round stainless steel covers complying to DIN28125-1 for pressure vessels and equipment in technical processing plants. These hinged covers can be used as manholes (openings for entry by humans or for inspection).

        More Details 6.2_DIN_Verschluss_nach_DIN_28125_Teil_1_NW584
    • Sightglasses, Fittings, Flanges
      • Products
      • Bolted Type Sightglass acc. DIN28120
        Bolted Type Sightglass acc. DIN28120
        More Details 7.1_Blockflanscharmatur_nach_DIN_28120
      • Sightglass acc. DIN11851
        Sightglass acc. DIN11851
        More Details 7.2_Schauglas_nach_DIN_11851
      • HZ-Aseptic-Nozzle acc. DIN11864
        HZ-Aseptic-Nozzle acc. DIN11864
        More Details HZ_Aseptic_Stutzen_nach_DIN11864
      • TC-Ferrules acc. DIN32676
        TC-Ferrules acc. DIN32676
        More Details TC_Stutzen_nach_DIN32676
      • HZ-Connectors
        HZ-Connectors
        More Details HZ_Connect_Stutzen
    • Equipment
      • Products
      • Safety-Grates
        Safety-Grates

        The safety grates is a safety feature for installation in manhole necks. It can be installed in all of our manhole covers.            

        More Details 8.1_Sicherheitsrost
      • Safety-Cross
        Safety-Cross

        The safety cross is a safety feature for installation in manhole collars. It can be installed in all of our manhole covers.  

        More Details 8.2_Sicherheitskreuz
      • Tankfeet
        Tankfeet

        Our tank feet are adjustable feet for vessels. The union sleeve is usually welded to the tank foot. The foot dome is screwed in and secured with a counter nut

        More Details 8.3_Tankfuesse
      • Eyebolts, Handle-Knobs, Hinges
        Eyebolts, Handle-Knobs, Hinges

        Eyebolt defective? Spare Parts required?
        Here you can find some spare parts for our covers.

        More Details Klappschrauben, Griffe, Scharniere
      • Handles, Nuts, ...
        Handles, Nuts, ...

        In the meantime we also offer a wide range of fastening elements for our covers. The line ranges from standard plastic star handles to stainless steel star handles, collar nuts (open and capped version), ring nuts, double toggles, etc.

        More Details gruppegriffe
      • Springassists, Locking Pins
        Springassists, Locking Pins

        Heavy covers can frequently be opened and closed only with considerable effort. Spring assists provide support for your personnel. We offer a wide variety:

        More Details ffnungshilfe_Sicherungsarretierung_transparenz
      • Special Equipment
        Special Equipment

        Our Special Equipmentconsists of safety devices for our manways.
        for example: Safety Eyebolt, Pressure Release system, Safety Release System or a wedge for side installation.

        More Details Sonderzubehoer_transparenz
      • Glass-Plates
        Glass-Plates

        Replacement borosilicate glass plates to DIN 7080 or soda-lime glass plates to DIN8902 are listed in the attached data sheet.

        More Details Glaeser
    • Gaskets
      • Products
      • O-Ring Gaskets
        O-Ring Gaskets

        The enclosed data sheet contains information about the various sizes, materials and approvals for the O ring seals of our covers.

        More Details
      • P-Profile-Gaskets
        P-Profile-Gaskets

        This seal profile closes the gap between cover and collar almost completely. The surface is equivalent to a flat seal when closing. This seal form is available in the qualities silicone and EPDM.

        More Details
      • Gasket-Set for Glass-Covers
        Gasket-Set for Glass-Covers

        Is the glass broken? Or a seal defective?

        When replacing the glass of a glass cover, we always recommend replacing the seal, too.

        More Details
      • Profilegasket for pressureless Domecovers
        Profilegasket for pressureless Domecovers

        The profile seals for our pressure-free dome cover have a seal lip on the inside of the cover as of a nominal width of 200.

        More Details
      • Gaskets for Handhole Cover
        Gaskets for Handhole Cover

        In the data sheet available for downloading, you will find a short overview of the seals for our oval hand-hole cover 190x240. These seals are available in the qualities, silicone and EPDM.

        More Details
      • Special Gaskets
        Special Gaskets

        No Zimmerlin cover? Conical seal shape? Urgent replacement required?
        Our data sheet "Special seals" offers an overview of our special seals. 

        More Details
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  1. Products
  2. Sightglasses, Fittings, Flanges
  3. Sightglass acc. DIN11851
  • Pressure Covers
  • Glass Covers
  • Oval Covers (Inside opening)
  • Pressureless Covers
  • Aseptic-Line Covers
  • DIN-Covers
  • Sightglasses, Fittings, Flanges
    • Bolted Type Sightglass acc. DIN28120
    • Sightglass acc. DIN11851
    • HZ-Aseptic-Nozzle acc. DIN11864
    • TC-Ferrules acc. DIN32676
    • HZ-Connectors
  • Equipment
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Sightglasses, Fittings, Flanges Sightglass acc. DIN11851

7.2_Schauglas_nach_DIN_11851

Product description

Standard Design:

  • Material: 1.4571/1.4404 (threaded nozzle) 1.4301 (cap nut)
  • Perbunan-/PTFE-gasket
  • Heavy wall nozzle (t=5,0-6mm) 
  • Borosilicatglass-pane acc DIN 7080 
  • MAWP: 6bar

Options:

  • Materials: 1.4435 , 1.4539, 1.4529, 1.4462, 1.4429, HC-22, HC-276, HC-2000, etc.
  • Various shapes of nozzles
  • Other glass materials
  • Other gasket materials

Downloads

Schraubschauglas DIN11851

Catalogue (Single Chapters) german
Download
PDF, 317.53 KB

Screwed Sightglass DIN11851

Catalogue (Single Chapters) englisch
Download
PDF, 306.93 KB

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Choose the sales partner for your country from the list below … 

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  • Products
    • Pressure Covers
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    • Contactsheet
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Phone +49 (0) 7663 / 60 88-0 Fax +49 (0) 7663 / 60 88-88
info@zimmerlin.de www.zimmerlin.de
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