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Compact Threaded Double Window Indicator - Stainless Steel

Compact Threaded Double Window Indicator - Stainless Steel

Threaded Double Window Stainless Steel Sight Flow Indicators are devices used in various industrial applications to monitor the flow of liquids in pipelines. The key feature of these flow indicators is the presence of two windows, typically made of toughened glass or acrylic, positioned opposite each other. These windows allow for a clear view of the fluid passing through the indicator.

OUR WARRANTY

100% Satisfaction Guarantee

Douglass warrants merchandise against defective workmanship and materials that become apparent within a period of 12 months from the date of receipt of invoice by the purchaser (hereinafter referred to as the warranty period). All liabilities under the warranty provisions shall expire when the warranty period has expired. Please feel free to contact us if you have any questions or comments.

SHIPPING AND PACKAGING

At Douglass, we use a unique and patented packaging method that minimizes the risk of glass damage during shipping. This system ensures your products arrive in perfect condition, just as we would like to receive them ourselves.

We understand that not all glass is the same, so we tailor our packaging techniques based on the type and quantity of products you order. This ensures maximum protection for every shipment.

More information here.

Add-ons to improve flow visibility

  • Full View

    For easily visible fluids, with color, turbulence, and clarity. They easily detect the presence of solids or foreign products in the handled fluid. They can be mounted in any position.

  • Flapper

    Internally mounted with a PTFE flapper, where the position indicates the direction of the fluid. Used in clear fluids that are difficult to observe; they are normally mounted horizontally, and only in vertical positions with ascending fluids.

  • Drip

    Allow for the formation of drops of low-volume or intermittent fluids, for example in unitary distillation operations. They are mounted only in a vertical position and descending flows.

  • Spinner

    Internally mounted with a PTFE spinner that rotates with the passage of the fluid, widely facilitating observation of dark, translucent, and clear fluids that are difficult to observe with the naked eye. They can be mounted interchangeably in any horizontal or vertical position.

Threaded Double Window stainless steel sight flow indicators are used in various industrial applications to monitor the flow of liquids in pipelines. The key feature is two windows, typically made of toughened glass or acrylic, positioned opposite each other for a clear view of the fluid passing through the indicator.

Compact threaded double window — Parts and materials

Compact Threaded Double Window Indicator - Stainless Steel — parts diagram
ItemPart nameMaterial options
1Allen bolts
  • Stainless Steel 316L
  • Stainless Steel 304
2Cover flange
  • Stainless Steel 316L
  • Stainless Steel 304
3Gasket
  • Buna
  • Neoprene
  • Teflon
  • Sanitary Rubber
  • EPDM
  • Viton
4Sight glass
  • DIN 7080 tempered borosilicate
  • DIN 8902 tempered soda lime
  • Acrylic
  • Quartz
5Body
  • Stainless Steel 316L
  • Stainless Steel 304

Perfectly suited for harsh environments where chemical resistance is crucial, such as in chemical processing or pharmaceuticals. Stainless steel models offer longevity and reliability, meeting rigorous quality standards for diverse industrial clients.

Compact Threaded Double Window Indicator - Stainless Steel — technical drawings (side and top views with dimensions A, B, F)

TECHNICAL INFORMATION

Measure1/4"3/8"1/2"3/4"1"1-1/4"1-1/2"
A (Dist between faces)3.25" (82.55mm)3.25" (82.55mm)3.25" (82.55mm)4.25" (107.95mm)4.25" (107.95mm)5.25"(133.35mm)5.25"(133.35mm)
B (Dist between caps)2.25" (57.15mm)2.25" (57.15mm)2.25" (57.15mm)3.25" (82.55mm)3.25" (82.55mm)3.5"(88.9mm)3.5"(88.9mm)
C (Visible process)1.75" (44.45mm)1.75" (44.45mm)1.75" (44.45mm)2.25" (57.15mm)2.25" (57.15mm)3"(76.2mm)3"(76.2mm)
D (Caps diameter)1" (25.40mm)1" (25.40mm)1" (25.40mm)1.5" (38.10mm)1.5" (38.10mm)32" (50.8mm)32" (50.8mm)

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