BL401-1 LED Flange Sight Glass Spotlight with Bracket
The Borlan Fluid BL401-1 is a compact external LED sight glass spotlight supplied with a separate adjustable bracket. It supports 12–24V AC/DC, with 3W or 7W power and white or yellow light options. The standard scope includes the lamp and bracket; the flange sight glass and sealing components are separate. Custom voltage and cable configurations are available on request.
Compact External Lighting for Sight Glass Inspection
The Borlan Fluid BL401-1 is a compact LED flange sight glass spotlight designed to illuminate an existing inspection window from outside the vessel. The lamp is held by a separate adjustable bracket, allowing the lighting direction to be set toward the viewing area without placing the lamp inside the process or making it part of the pressure boundary.
The confirmed low-voltage configuration accepts 12–24V AC or DC. Available power options are 3W and 7W, with white or yellow light available for different observation tasks. Other voltage arrangements, including 36V and 220V configurations, can be discussed as customized versions. The exact supply method must follow the nameplate and wiring information supplied with the ordered unit.
Key Features
- External illumination: directs light through an existing flange or tank sight glass while remaining outside the wetted and sealing area.
- Adjustable bracket: allows the lamp angle to be set for the available mounting point and required viewing direction.
- Compact LED housing: fits installations where a larger high-power spotlight is unnecessary or available clearance is limited.
- 3W and 7W options: supports standard inspection tasks with two confirmed power choices.
- 12–24V AC/DC input: simplifies integration with common low-voltage industrial power arrangements.
- Selectable light color: white or yellow illumination can be specified according to the contents and observation objective.
- Standard push button: provides local lamp control at the inspection point.
Product Specifications
| Item | Specification |
|---|---|
| Model | BL401-1 |
| Product type | External LED flange sight glass spotlight with separate mounting bracket |
| Standard input | 12–24V AC/DC |
| Power options | 3W / 7W |
| Custom voltage | 36V and 220V arrangements available subject to configuration confirmation |
| Light color | White or yellow |
| Housing | Stainless steel; confirm the required grade when ordering |
| Control | Local push button included |
| Cable | Bare-lead cable; length can be customized |
| Standard supply scope | Lamp and separate mounting bracket |
| Not included as standard | Flange sight glass, glass, gasket, cover and other sealing components |
Reference Dimensions
The current Borlan Fluid catalog lists the following reference dimensions for the BL401-1 flange spotlight. All values are in millimetres.
These are catalog reference dimensions. Lamp and bracket dimensions can change with the selected voltage, power, cable interface or customized mounting arrangement. Request and approve the drawing for the ordered configuration before drilling or machining a mounting point.
Supply Scope and Installation Boundary
The standard product-page scope is one BL401-1 lamp with one separate mounting bracket. The flange sight glass is not included. If you also require a sight glass, Borlan Fluid can review it as a separate item after receiving the connection standard, size, materials and operating conditions.
The BL401-1 lamp is an external accessory. It does not contact the process medium and does not create the vessel pressure or vacuum seal. The sight glass, gasket, cover, bolts or clamp form that sealing boundary. This arrangement allows the lamp to be serviced without opening the vessel when the final mounting design keeps the lamp independent from the sealing components.
How to Confirm Bracket Compatibility
A product name or nominal sight glass size is not enough to guarantee that one bracket fits every installation. Before ordering, provide the outside diameter of the sight glass cover or flange, the mounting-bolt diameter, the distance from the bolt centre to the centre of the viewing window, and a side-view photo or drawing showing the available clearance.
Also state what the operator needs to observe, the vessel depth, the distance from the lamp to the window, and whether the contents are clear, cloudy or opaque. These details help determine the power, light color and mounting direction. Wattage alone does not define the useful illumination at the observation point.
Electrical and Area Classification Notes
For the standard low-voltage version, confirm whether the available source is AC or DC and identify the voltage before production. For a 36V or 220V request, Borlan Fluid will confirm the lamp and any required matched power arrangement. Always connect the delivered unit according to its nameplate and wiring document.
The BL401-1 described on this page is a standard non-explosion-proof sight glass light. Do not use it in a hazardous area based only on its stainless steel appearance. If the installation requires explosion-protection documentation, provide the destination market, required protection concept and area classification so that a configuration with applicable evidence can be reviewed separately.
Why Work with Borlan Fluid
Borlan Fluid manufactures sight glass lights, sight glasses and related stainless steel tank accessories in Wenzhou, China. Our team can review the lamp, bracket and existing sight glass as one installation problem while keeping the supply scope and sealing responsibility clear. This helps equipment builders, distributors and maintenance teams avoid mismatched brackets, unsuitable power arrangements and incorrect certification assumptions.
Voltage, wattage, cable length, light color and mounting details can be reviewed against your application. Send a drawing or installation photo and Borlan Fluid will confirm the proposed configuration before quotation.
Product Videos and Engineering Updates
For product demonstrations, factory footage and new sight glass lighting content, visit the official Borlan Fluid YouTube channel. You can also follow Borlan Fluid on LinkedIn for product and engineering updates. Contact us if you need a video showing a specific BL401-1 voltage, power or bracket arrangement.
Frequently Asked Questions
Is the flange sight glass included?
No. This product-page scope includes the BL401-1 lamp and separate mounting bracket. The flange, glass and sealing components are separate items.
Can the BL401-1 operate on both AC and DC?
The confirmed standard low-voltage configuration accepts 12–24V AC/DC. Use the electrical information supplied with the ordered unit.
Which power options are available?
The confirmed BL401-1 options are 3W and 7W. Provide the observation distance and contents so that the lighting arrangement can be reviewed.
Can I order a 36V or 220V version?
Yes, these voltages can be discussed as customized configurations. The final input method and any matched power equipment must be confirmed before production.
Is the BL401-1 explosion-proof?
No. This page describes the standard non-explosion-proof BL401-1. Hazardous-area projects require a separately verified model and configuration with suitable documentation.
Will the bracket fit my existing sight glass?
Compatibility depends on the flange or cover dimensions, bolt size, bolt-to-window distance and available clearance. Send these measurements and a side-view photo or drawing for review.
Request a BL401-1 Quotation
Send Borlan Fluid the required quantity, available supply voltage and AC/DC source, preferred 3W or 7W power, white or yellow light, required cable length, and a photo or drawing of the mounting area. Please also state whether you need only the lamp and bracket or a separately selected sight glass. We will confirm the proposed configuration and supply scope before quotation.
Borlan Fluid can help you throughout the design, sample, production, pack & supply.Borlan Fluid has its own design team which is able to deliver design services for Stainless Steel Tank Accessories.We will send you sample for the brochure after confirmed details.We can also offer you 3D model of our stock product.
Stock sample can send out within 1 day, custom sample doing time is 5-10 days. 1~100pcs
production time is 7~10 days, 500~1000pcs production time is 10~15 days. 1000~3000pcs
production time is 15~20 days.
a).You send us artwork.
b).You pay 30% deposit, if less than 100pcs, we suggest you pay full amount because production time will be quick (7~10 days).
c).We make a digital print proof sample take picture and video for you confirmation.
d).Start production.
e).Balance Paying before package sending out.
We are a professional manufacturer specializing in stainless steel sight glasses, sight glass lights, and tank accessories.
All products are designed and manufactured in our own factory, allowing us to control quality, lead time, and customization.
We supply a full range of stainless steel tank and pipeline accessories, including:
Sight glasses (union, flanged, pipe, fused, tubular)
Sight glass lights (integrated and separate types)
Explosion-proof sight glass lights
Manways and manholes
Spray balls and cleaning accessories
Sanitary fittings and customized tank accessories
Our standard materials include:
304 stainless steel
316 / 316L stainless steel
Other materials can be provided upon request depending on application requirements.
Yes.
All sight glass lights are CE certified, and comply with relevant CE conformity requirements.
Explosion-proof models can additionally comply with ATEX requirements when specified.
Yes.
We provide explosion-proof sight glass lights suitable for hazardous environments such as chemical, pharmaceutical, and petrochemical industries.
Please inform us of the required explosion-proof standard (e.g. ATEX、EX) when making an inquiry.
Yes.
Custom sizes and non-standard dimensions are available upon request.
We can customize:
Diameter and thickness
Connection types (flanged, clamp, welded, union)
Glass type
Lighting configuration
Available connection types include:
Flanged (DIN / ANSI / customized)
Union
Tri-clamp (sanitary)
Welded
Pipe inline connections
Our products are widely used in:
Chemical processing
Pharmaceutical manufacturing
Food & beverage
Biotechnology
Cosmetics
Environmental and water treatment industries
Yes.
We supply separate sight glass lights designed for external illumination of existing sight glasses.
Integrated and separate configurations are both available.
Depending on the model, we offer:
AC power supply
DC power supply
Battery-powered models
Voltage, wattage, and cable length can be customized.
Yes.
We supply sanitary stainless steel sight glasses and accessories, suitable for hygienic applications in food, beverage, and pharmaceutical industries.
All products undergo:
Material inspection
Dimensional inspection
Functional testing
Certification verification (CE where applicable)
This ensures consistent quality and reliability.
Lead time depends on:
Product type
Quantity
Customization requirements
Standard products usually have shorter lead times, while customized products may require additional production time.
Yes.
We support OEM and customized branding for overseas customers, including product marking and packaging.
You can contact us by:
Website inquiry form
Providing drawings or specifications if customization is required
Our sales team will respond with technical confirmation and quotation.
Request A Quote
To know more about our products and services, please fill out the contact form.
Contact Us
We are committed to producing the best quality products at the most competitive prices. Therefore, we sincerely invite all interested companies to contact us for more information.
jzxiang1992@gmail.com
Phone
+86-16657273263
+8616657273263
borlanfluid
Address
longwan town, wenzhou city,zhejiang province, China.
