Jacoby-Tarbox Weld-On Sight Windows for ASME Pressure Vessels (Clark Reliance)

Jacoby-Tarbox ASME weld-on sight windows provide direct visual access into industrial pressure vessels and tanks. The range includes circular Style 5200-PVQ windows and obround Style 5300 windows. Both configurations use weld pads for attachment directly to the vessel surface. Customers can specify flat or curved pads to match the vessel geometry.

Jacoby-Tarbox manufactures Style 5200-PVQ with code metals for vessels conforming to ASME Section VIII. Style 5300 also uses code metals and suits vessels built to ASME code requirements. The proprietary weld-pad design follows a self-reinforcing studding-outlet approach. However, the vessel designer must confirm reinforcement, corrosion allowance, and final pad dimensions.

Westech Industrial supplies Jacoby-Tarbox ASME weld-on sight windows Canada-wide. Our team can help customers compare sizes, pad profiles, and window configurations. Westech also provides technical product support throughout the equipment lifecycle. For larger scopes, our Custom Fabrication team can integrate related instrumentation, controls, skids, and packaged process systems.

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Description

ASME Weld-On Sight Windows for Pressure Vessel Designs

Jacoby-Tarbox builds Style 5200-PVQ from code metals for pressure-vessel applications. The design supports attachment to vessels conforming to ASME Section VIII. It also accommodates installation in any orientation. Therefore, designers can position the viewing point around operating and access requirements.

These ASME weld-on sight windows use dedicated weld pads instead of threaded or flanged process connections. The weld-on format creates a compact viewing point directly at the vessel wall. However, the vessel designer must establish the final reinforcement and attachment requirements.

Circular Style 5200-PVQ Provides Flexible Placement

Style 5200-PVQ uses a circular body and viewing opening. Jacoby-Tarbox lists sizes #2 through #8. The available viewing diameter increases from 1-1/4 inches to 6-3/4 inches across the range.

Customers can select flat or curved weld pads. Cylindrical and spherical pad profiles support different vessel geometries. Consequently, the window can follow the vessel surface more closely.

The Style 5200-PVQ also supports several window configurations. Options include UniGlas, dual windows, and UniGlas dual windows. This selection helps customers match the window construction to project requirements.

Style 5300 Expands the Viewing Area

The Style 5300 uses an obround opening for a longer viewing area. Available views range from 1 x 6 inches through 4 x 24 inches. This shape suits applications that need observation across a broader vessel section.

Jacoby-Tarbox fabricates Style 5300 units with code metals. The design carries a 150 psig working pressure and a 500°F service rating. Customers may specify flat or curved welding pads. Dual-window construction is also available for this style.

Proprietary Weld Pads Support Vessel Integration

Jacoby-Tarbox uses proprietary weld-pad dimensions for these pressure-vessel windows. The design follows a self-reinforcing studding-outlet approach. Factory pad thicknesses meet many application requirements. However, some vessel designs require thicker or larger pads.

For Style 5200-PVQ, dimension C identifies the minimum pad thickness. For Style 5300, dimensions A, B, and C identify minimum welding-pad dimensions. Therefore, the vessel designer must confirm reinforcement, corrosion allowance, and final pad dimensions.

Standard Weld-Pad Options for Lower-Duty Service

Jacoby-Tarbox also offers Style 5200 weld-pad windows for non-ASME applications. These units suit lighter-duty tank, vessel, and piping requirements. Listed pressure ratings reach 150 psig, depending on size and construction.

Style 5200 can use flat, cylindrical, or spherical weld pads. The customer must also provide the required welding instructions. This option helps separate standard service from ASME pressure-vessel requirements.

Westech Support for ASME Weld-On Sight Windows

Westech Industrial can help customers compare circular and obround designs. Our team can also review viewing size, pad profile, and available window configurations. In addition, Westech provides technical product support throughout the equipment lifecycle.

For larger scopes, Westech’s Custom Fabrication team can integrate related instrumentation, controls, and packaged process systems. This support helps customers coordinate the sight window with the surrounding application.

Applications

Jacoby-Tarbox weld-on sight windows support applications requiring a permanent local viewing point on a tank or pressure vessel. The selected configuration should match the vessel geometry, viewing requirements, pressure, temperature, and applicable code.

  • ASME Section VIII pressure vessels requiring circular local observation
  • Tanks and vessels with flat, cylindrical, or spherical surfaces
  • Applications requiring circular window installation in any orientation
  • Vessels requiring a longer obround viewing area
  • Style 5300 applications operating up to 150 psig and 500°F
  • Projects requiring dual-window or UniGlas window configurations
  • Industrial tanks requiring direct visual process observation
  • Lower-duty vessel and piping applications using non-ASME Style 5200 windows
  • Packaged process systems requiring local vessel visibility

Documents

Jacoby-Tarbox Pressure Vessel Sight Window_Brochure_Nov2021_Westech.pdf

Jacoby-Tarbox - Sight Windows Normal to 150 PSIG_Brochure_Nov2021_Westech.pdf

Manufacturer Info

Clark-Reliance® Corporation is a global leader in the level indication and control, sightflow indication, filtration and separation industries. The company’s well-known brands constitute the broadest line of level instrumentation for boilers and other equipment found in utilities, refineries, chemical processing and other industries.

Website: https://www.clarkreliance.com/

SPECS

Product Type
Weld-on sight windows for tanks, pressure vessels, and selected piping applications
Style 5200-PVQ
A circular sight window fabricated with code metals for attachment to pressure vessels conforming to ASME Section VIII.
Style 5300
An obround sight window fabricated with code metals for vessels conforming to ASME code requirements.
Style 5200-PVQ Code Basis
Fabricated with code metals for attachment to vessels conforming to ASME Section VIII
Style 5200-PVQ Orientation
Suitable for installation in any orientation
Style 5200-PVQ Weld Pads
Flat or curved; curved configurations include cylindrical and spherical profiles
Style 5200-PVQ Window Options
UniGlas, dual windows, or UniGlas dual windows
Style 5200-PVQ Size #2
A: 3-7/8"; B: 1-1/4"; minimum C: 1-3/4"
Style 5200-PVQ Size #3
A: 5"; B: 2"; minimum C: 1-3/4"
Style 5200-PVQ Size #4
A: 6-1/2"; B: 2-9/16"; minimum C: 2"
Style 5200-PVQ Size #5
A: 7-1/2"; B: 3-3/16"; minimum C: 2"
Style 5200-PVQ Size #6
A: 8-1/4"; B: 4-3/16"; minimum C: 2"
Style 5200-PVQ Size #7
A: 9-3/8"; B: 5-1/4"; minimum C: 2-1/4"
Style 5200-PVQ Size #8
A: 11"; B: 6-3/4"; minimum C: 2-1/4"
Style 5300 Construction
Fabricated with code metals for vessels conforming to ASME code requirements
Style 5300 Pressure Rating
150 psig working pressure
Style 5300 Temperature Rating
500°F service
Style 5300 Weld Pads
Flat or curved welding pads
Style 5300 Window Options
Single-window or dual-window configurations
Style 5300 View 1 x 6
A: 3-5/8"; B: 8-5/8"; C: 1-1/4"; D: 2-3/16"
Style 5300 View 2 x 12
A: 5"; B: 15"; C: 1-1/4"; D: 2-7/16"
Style 5300 View 3 x 12
A: 6"; B: 16"; C: 1-1/2"; D: 2-13/16"
Style 5300 View 3 x 18
A: 6"; B: 22"; C: 1-1/2"; D: 2-13/16"
Style 5300 View 4 x 24
A: 7"; B: 28"; C: 1-1/2"; D: 3-1/4"
Minimum Pad Dimensions
Listed dimensions may require an increase to meet project-specific ASME reinforcement requirements
Vessel Design Responsibility
The vessel designer must determine reinforcement, corrosion allowance, and final welding-pad dimensions
Non-ASME Alternative
Style 5200 normal-service weld-pad window, with listed ratings up to 150 psig depending on size and construction
Product Availability
Canada-wide through Westech Industrial

PRODUCT FAQ's

What is a Jacoby-Tarbox PVQ sight window?
PVQ refers to the Pressure Vessel Quality configuration. Jacoby-Tarbox fabricates Style 5200-PVQ with code metals for pressure-vessel applications. The design supports attachment to vessels conforming to ASME Section VIII.
What is the difference between Style 5200-PVQ and Style 5300?
Style 5200-PVQ provides a circular viewing opening and supports installation in any orientation. Style 5300 provides an elongated obround view. Therefore, Style 5300 suits applications requiring visibility across a larger vessel section.
Can these windows support an ASME Section VIII vessel design?
Style 5200-PVQ supports attachment to vessels conforming to ASME Section VIII. Style 5300 uses code metals for ASME vessel applications. However, the vessel designer must confirm reinforcement, corrosion allowance, and final pad dimensions.
Are flat and curved weld pads available?
Yes. Style 5200-PVQ and Style 5300 can use flat or curved pads. Cylindrical and spherical pad profiles help accommodate different vessel shapes.
What window configurations can I select?
Style 5200-PVQ supports UniGlas, dual windows, and UniGlas dual windows. Style 5300 can also use a dual-window configuration. The appropriate option depends on the project requirements.
Can Jacoby-Tarbox provide a custom weld-pad thickness?
Yes. Factory thicknesses suit many applications. However, Jacoby-Tarbox can provide custom thicknesses when the vessel design requires them. The vessel designer must establish the required dimensions and reinforcement.
Are non-ASME weld-on sight windows available?
Yes. The standard Style 5200 weld-pad window suits lighter-duty tank, vessel, and piping applications. It is available with flat, cylindrical, or spherical weld pads. Listed pressure ratings reach 150 psig, depending on size and construction. For ASME pressure-vessel applications, specify the Style 5200-PVQ. Jacoby-Tarbox fabricates this version with code metals for attachment to pressure vessels conforming to ASME Section VIII.
What information should I provide when requesting a quote?
Provide the vessel geometry, viewing size, design pressure, design temperature, and required pad profile. Also include the window configuration and applicable vessel-code requirements. The vessel designer should identify any required custom pad dimensions.
How can Westech Industrial support my application?
Westech can help compare models, viewing sizes, pad shapes, and window configurations. Our service team can also provide technical product support after selection. Additionally, Westech’s Custom Fabrication team can integrate related instrumentation, controls, panels, skids, and packaged systems. Jacoby-Tarbox weld-on sight windows are available Canada-wide through Westech Industrial.