Stainless Steel Sight Glass – Union End | Neza Engineering Co.

Technical Specifications

BrandNeza
ManufacturerNeza Engineering Co.
Product NameStainless Steel Sight Glass – Union End
Material GradesSS 304, SS 316, SS 316L
Available Sizes (OD)25.4 mm (1”) to 101.6 mm (4”)
Glass TypeBorosilicate / Tempered Toughened Glass
Connection TypeUnion End (SMS / DIN / IDF / RJT / Customized)
Gasket MaterialEPDM / PTFE / Silicone / Viton
Working PressureUp to 10 bar
Working Temperature-20°C to 200°C
FinishMirror Polish / Electro Polish
Standards CompliedSMS, DIN, ISO, ASME BPE, 3A
ApplicationsDairy, Pharma, Food & Beverage, RO, Biotech
CertificationsISO 9001:2015, 3A, MOC Certificates

What Is a Stainless Steel Sight Glass (Union End)?

The Union-End Sight Glass by Neza Engineering Co. is a high-performance component designed for visual flow observation in hygienic pipeline systems. It allows plant operators to visually inspect fluid movement, product clarity, and process continuity without interrupting the system.

This hygienic sight glass features removable union connections, which allow for easy disassembly and cleaning, making it ideal for CIP/SIP systems in dairy, food, pharma, beverage, and chemical processing.

Unlike welded options, the union end design offers flexibility, mobility, and zero downtime, making it perfect for process lines requiring frequent inspection.


Available Outer Diameter (OD) Sizes

Size (Inch)Outer Diameter (OD)
1”25.4 mm
1.5”38.1 mm
2”50.8 mm
2.5”63.5 mm
3”76.2 mm
4”101.6 mm

Custom OD sizes and threading options are also available upon request.


Key Features of Neza Sight Glass (Union End)

  • High Visibility: Crystal-clear borosilicate or tempered glass ensures optimal visibility of the product flow.

  • Union End Design: Easily removable union nut allows fast access for cleaning or glass replacement.

  • Hygienic Construction: Designed with smooth finishes and crevice-free joints to meet sanitary standards.

  • Pressure & Temperature Resistant: Handles demanding fluid systems under both high pressure and elevated temperatures.

  • Multiple Standards Compatible: Available in SMS, DIN, IDF, and RJT designs to suit your plant configuration.

  • Long Service Life: Built from solid stainless steel 304 / 316 with high chemical resistance and mechanical durability.


Applications of Union End Sight Glass

This sight glass is engineered for use in fluid processing industries where observing the product is critical for:

  • Quality Control

  • Batch Verification

  • Foaming and Air Monitoring

  • Color and Consistency Check

  • CIP/SIP Monitoring

Common Use Industries

  • Dairy Industry – Milk processing, ghee clarification, yogurt production

  • Pharmaceutical – API flow monitoring, batch production lines

  • Food & Beverage – Juice, beer, soft drink, and syrup lines

  • Water Filtration/RO Plants – Flow clarity checks, WFI pipelines

  • Biotechnology – Enzyme and culture flow verification

  • Cosmetic and Chemical Plants – Liquid gel and lotion line inspection


Types of Glass Available

  • Borosilicate Glass: Standard for most hygienic applications, resistant to thermal shock

  • Tempered (Toughened) Glass: Withstands higher pressure applications and mechanical impact

  • Fused Glass (Optional): For highly sterile or pharma-grade lines requiring leak-free bonding


Union Types and Gasket Options

Neza offers various union types to fit into your specific hygienic piping system:

  • SMS Union Sight Glass

  • DIN Union Sight Glass

  • IDF / RJT Union Sight Glass

  • Custom Threading (on request)

Gasket Material Options:

Gasket MaterialTemperature RangeIndustry Suitability
EPDM-40°C to 140°CFood, Beverage, Dairy
PTFE-200°C to 250°CPharma, Chemical
Silicone-60°C to 200°CDairy, Cosmetic
Viton-20°C to 200°CChemical, Pharma

Why Choose Neza Engineering Co.?

As a leading manufacturer of stainless steel hygienic fittings, Neza Engineering Co. brings more than 8 years of experience, state-of-the-art CNC infrastructure, and a zero-defect manufacturing mindset.

Here’s what sets our Union Sight Glasses apart:

  • 100% In-House Manufacturing in Ahmedabad

  • Traceability with MTC (Material Test Certificates)

  • Electropolished Finish for ultra-hygienic environments

  • Tested for Pressure and Thermal Shock

  • Bulk Availability and Fast Delivery PAN India

  • OEM and Custom Branding Available


Maintenance & Installation

Installation Instructions:

  1. Align both pipe ends with matching union connections

  2. Insert gasket into groove

  3. Place the sight glass section between unions

  4. Tighten the nut carefully using appropriate spanner

  5. Test for leakage and fluid visibility

Maintenance Tips:

  • Clean after every production cycle using CIP

  • Avoid using sharp tools while handling glass

  • Periodically check glass for scratches or fogging

  • Store unused units in cushioned packaging


Optional Customizations

Neza offers fully customizable union end sight glasses:

  • Size modifications

  • Extra-thick glass for pressure applications

  • Laser-etched logos

  • Electropolishing with Ra < 0.6 μm

  • Aseptic design for pharma pipelines

  • Special end connections (threaded, flanged, etc.)


Quality Certifications

Every Union End Sight Glass is manufactured and delivered with:

  • ISO 9001:2015 Compliance

  • 3A Sanitary Standard (Optional)

  • MOC Certificate

  • Pressure Test Certificate (on request)

  • Heat Number Traceability

  • Visual and Dimensional Inspection Reports


Packaging & Delivery

Each sight glass is:

  • Bubble-wrapped and boxed individually

  • Comes with a protection cover over the glass

  • Tagged with product size, batch, and heat number

  • Available for international air/sea export


Order Now from Neza Engineering Co.

If you’re looking for a reliable and hygienic flow monitoring solution, the SS Sight Glass with Union End is a must-have for your sanitary processing plant.

For bulk pricing, technical drawings, or to place an order:

📍 Neza Engineering Co. – Ahmedabad, Gujarat
📞 +91 7891213773
📧 info@neza.co.in
🌐 www.neza.co.in

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