Dwyer Instruments SERIES 550 Catalog Page

A NPT

C HEX

SERIES 550 | W. E. ANDERSON

BY DWYER

SIGHT WINDOW

Shows Level or Contents of Tanks, Pipelines; Fused Glass and Steel Construction

Model SFI-550-1/4 SFI-550-3/8 SFI-550-1/2 SFI-550-3/4 SFI-550-1 SFI-550-1-1/4

ØB

SFI-550-1-1/2 SFI-550-2

Dimensions — Inches (mm) A B C D E

1/4 3/8 1/2 3/4 1 1-1/4 1-1/2 2

11/32 [8.73] 7/16 [11.11] 9/16 [14.29] 3/4 [19.05] 15/16 [23.81] 1-3/16 [30.18] 1-7/16 [36.53] 1-7/8 [47.63]

5/8 ]15.95] 3/4 [19.05] 15/16 [23.81] 1-1/16 [26.99] 1-3/8 [34.93] 1-3/4 [44.45] 2 [50.80] 2-1/2 [63.50]

3/16 [4.76] 7/32 [5.56] 7/32 [5.56] 5/16 [7.94] 5/16 [7.94] 13/32 [10.32] 13/32 [10.32] 13/32 [10.32]

Sight Flow Indicators

5/8 [15.95] 23/32 [18.26] 25/32 [19.84] 15/16 [23.81] 1-1/16 [26.99] 1-7/32 [30.96] 1-7/32 [30.96] 1-9/32 [32.54]

The Series 550 Sight Window is a range of glass with plated steel body sight windows which display level or contents of tanks or pipelines. Connections are standard NPT in

sizes ranging from 1/4 to 2˝.

FEATURES/BENEFITS

• Glass to metal bond for utmost reliability

• Plated steel bodies have convenient hex wrench surfaces for easy installation

• Windows are clear, ripple free, and ush with the front face, with no recess on which

dirt might collect

APPLICATIONS

• Hydraulic tanks

• Pressure vessels

• Coolant tanks

• Hydraulic lines

• Oil reservoirs

SPECIFICATIONS Service: Compatible gases and liquids. Wetted Materials: Window: Glass; Body: Plated steel. Temperature Limit: 200°F (93°C). Pressure Limit: 125 psig (8.6 bar). Connections: 1/4˝ to 2˝ male NPT.

MODEL CHART Model Model SFI-550-1/4 SFI-550-3/8 SFI-550-1/2 SFI-550-3/4

SFI-550-1 SFI-550-1-1/4 SFI-550-1-1/2 SFI-550-2

DWYER INSTRUMENTS, INC.

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