Douglass

Threaded Double Windows SS Small

Douglass’s Double Window Threaded Sight Flow Indicator is now available in Stainless Steel 304 and 316L variants, offering superior durability and corrosion resistance for demanding industrial applications. Engineered for precision flow monitoring, this indicator features two clear windows, ensuring optimal visibility of fluid or gas movement within systems.

Douglass’s Double Window Threaded Sight Flow Indicator is now available in Stainless Steel 304 and 316L variants, offering superior durability and corrosion resistance for demanding industrial applications. Engineered for precision flow monitoring, this indicator features two clear windows, ensuring optimal visibility of fluid or gas movement within systems.

Enhance its functionality with:

  • Flappers, for accurate flow rate measurement,
  • Spinners, to check fluid direction and continuity,
  • Drip Indicators, ideal for gas flow detection.

Perfectly suited for harsh environments where chemical resistance is crucial, such as in chemical processing or pharmaceuticals. The stainless steel models promise longevity and reliability, meeting the rigorous quality standards of our diverse industrial clients.

Connection Type NPT Threaded
Flow indication type Full view, spineer type, flapper type, drip type
Working pressure From 0 to 300 PSI
Working temperature -45°C up to 270°C
Measurement 1/4” NPT 3/8” NPT 1/2” NPT 3/4” NPT 1” NPT
A (Dist between faces) 3.25” (82.55mm) 3.25” (82.55mm) 3.25” (82.55mm) 4.25” (107.95mm) 4.25” (107.95mm)
B (Dist between caps) 2.25” (57.15mm) 2.25” (57.15mm) 2.25” (57.15mm) 3.25” (82.55mm) 3.25” (82.55mm)
C (Visible process) 1.75” (44.45mm) 1.75” (44.45mm) 1.75” (44.45mm) 2.25” (57.15mm) 2.25” (57.15mm)
D (Caps diameter) 1” (25.40mm) 1” (25.40mm) 1” (25.40mm) 1.5” (38.10mm) 1.5” (38.10mm)
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