Circular sight glass fitting type 391 PN 16/40 - pipe assembly

Product catalog summary

Overview: Circular sight glass fittings, specifically type 391, are designed for observing and illuminating the interior of pipelines. These fittings are round flange sockets with pipe attachments for welding onto pipelines.

Operating Conditions: The operating conditions depend on the choice of glass and gaskets. The temperature range is up to 150°C for soda-lime glass and up to 280°C for borosilicate glass. Pressure ranges from ≤ 16 barg to 40 barg, with options for low-temperature and higher temperature/pressure applications available upon request.

Materials: The base flange materials include various stainless steels and alloys such as 1.4571, 1.4404, and others. Glass options include borosilicate and soda-lime glass, while gaskets can be made from PTFE, FKM, NBR, C4400, silicone, EPDM, and graphite. Screws are available in A2-70 / A4-70, with special materials available upon request.

Installation Note: After welding the ends of the base flange, it is crucial to check for warping of the sealing surfaces. Rework may be necessary, and specified torque values for bolting should be adhered to as per the operating and maintenance manual.

Specifications: The document provides detailed specifications for nominal diameters (DN 100 to 350), weights, and dimensions for both PN 16 and PN 25/40 pressure ratings. It also includes a product code structure for identifying specific configurations.

Optional Accessories: Accessories include round mica discs, sight glass wipers, grid impact protection windows, metal fused safety sight glass, LED lights, and FEP protective screens/coatings. These accessories enhance functionality and safety, especially in high-temperature or high-pH environments.

Quick Overview: The fittings are suitable for both liquid and gaseous media, with custom designs and over 50 sealing materials available. They are heat-resistant up to 280°C and can handle pressures up to 40 barg.

Catalog excerpts

Circular sight glass fitting type 391 PN 16/40 - pipe assembly-1

Circular sight glass fitting type 391 PN 16/40 - pipe assembly for welding on pipelines mi With pipe construction for welding onto the medialeading pipeline USAGE Circular sight glass fittings serve to observe and illuminate the interior of pipelines. Sight glass fittings of type 391 are round flange sockets with pipe attachment for welding ends onto pipelines. After welding ends the base flange, it must be checked whether the sealing surfaces have warped! If necessary, rework may be required! Also, pay attention to the specified torque values for the bolting according to the operating and maintenance manual. DRAWING Materials D = Nominal diameter of the media-carrying pipeline 10112025 - Subject to technical changes and errors!

Open the catalog to page 1

Circular sight glass fitting type 391 PN 16/40 - pipe assembly-2

Circular sight glass fitting type 391 PN 16/40 - pipe assemblyfor welding on pipelines DN 10112025 - Subject to technical changes and errors! qe

Open the catalog to page 2

Circular sight glass fitting type 391 PN 16/40 - pipe assembly-3

Circular sight glass fitting type 391 PN 16/40 - pipe assemblyfor welding on pipelines Type PRODUCTCODE Example for Explaining the Code Composition 1) Borosilicate glass according to DIN 7080 or similar 4) Borosilicate glass2 + PTFE wiper SGW 5) Borosilicate glass2 + silicone wiper SGW 6) Soda-lime glass3 + PTFE wiper SGW 7) Soda-lime glass3 + silicone wiper SGW Unless otherwise specified, the highlighted factory standard will be delivered. The product code 11-391-1-1-1-2-1-4-0 corresponds to the standard version: ACI Type 391 DN 100 sight glass DN 125 media-carrying pipe PN 16 Base flange with...

Open the catalog to page 3

Circular sight glass fitting type 391 PN 16/40 - pipe assembly-4

Circular sight glass fitting type 391 PN 16/40 - pipe assembly QUICK OVERVIEW Custom made designs possible Accessories available OPERATING CONDITIONS Operating conditions depend on the choice of glass and seals: Borosilicate glass (DIN 7080 or similar)

Open the catalog to page 4

Circular sight glass fitting type 391 PN 16/40 - pipe assembly-5

Circular sight glass fitting type 391 PN 16/40 - pipe assembly for welding on pipelines OPTIONAL ACCESSORIES Round mica discs up to 320 °C with Borosilicate glass DIN 7080 Sight glass wiper with PTFE, silicone, EPDM or FKM wipers Metal fused safety sight glass Grid impact protection window FEP protective screen / coating The pressure-temperature limits apply according to DIN EN 1092-1! Our tool with the same name is available on our website. (www.aci24.com, under Service, sub-item Tools) 10112025 - Subject to technical changes and errors! Powered by TCPDF (www.tcpdf.org)

Open the catalog to page 5