1. Vintage Tubes & Sockets Audio For Sale
  2. sku: 11081699325512891
  3. WESTINGHOUSE WL-793

WESTINGHOUSE WL-793 Sterilamp Uv Germicidal Tube Nos Datasheet

Wl-793 Westinghouse Sterilamp Uv Germicidal Tube 1950 Nos With Datasheet Rare

( Brand: Westinghouse ), ( Manufacturer Part Number: WL-793 ), ( Type: Nos Tube ), ( Unit Type: Unit ), ( Country Of Origin: United States )

Review WESTINGHOUSE Sterilamp Uv Germicidal Tube Nos Datasheet Rare

The **Westinghouse WL-793 Sterilamp UV Germicidal Tube (1950 NOS)** is a rare and highly sought-after piece of vintage medical and scientific equipment, originally designed for ultraviolet germicidal irradiation (UVGI) applications in the mid-20th century. This **1950s-era, never-out-of-service (NOS) tube** represents a classic example of early germicidal ultraviolet technology, crafted by Westinghouse Electric Corporation, a pioneer in electrical and lighting innovations. The WL-793 features a **long, slender glass envelope** filled with an inert gas mixture, typically argon or mercury vapor, which emits a powerful spectrum of ultraviolet-C (UVC) light at a wavelength of approximately **253.7 nanometers** the optimal range for destroying bacteria, viruses, fungi, and spores through DNA disruption. Constructed with precision engineering for durability, the tube is encased in a **thin, durable borosilicate glass** that ensures long-lasting performance while maintaining transparency to maximize UV output. The **1950 NOS designation** confirms its authenticity as an original, unopened, and unused unit from the era, making it a prized collector s item for historians, medical professionals, and enthusiasts of vintage technology.

Designed for **high-intensity germicidal applications**, the WL-793 was likely intended for use in **hospital operating rooms, laboratories, water purification systems, or industrial air sterilization units** of the time. The tube operates on a **low-pressure mercury vapor discharge**, requiring a compatible ballast or driver circuit to regulate its electrical input, typically around **40 120 watts**, depending on the specific application. Its compact yet robust construction reflects the engineering standards of the era, with **metal end caps** sealed to the glass envelope via high-temperature fusion, ensuring both electrical conductivity and structural integrity. The **serial number and manufacturing date** (if visible) on the tube s base provide further verification of its authenticity, while the **golden-yellow glow** emitted during operation serves as a visual confirmation of its active germicidal function.

Beyond its functional value, the **Westinghouse WL-793 Sterilamp** holds significant historical importance as a relic of the **golden age of ultraviolet sterilization**, a period when UV light was widely recognized as a critical tool in combating infectious diseases before the widespread adoption of antibiotics. Its design aligns with the **pre-World War II and early Cold War era**, a time when medical and scientific advancements were rapidly evolving, and UV sterilization was a cornerstone of public health initiatives. Collectors and restorers often seek out NOS units like this to preserve the legacy of early germicidal technology, while modern practitioners may repurpose it in **DIY UV sterilization projects, aquarium filtration systems, or even experimental air purification setups**, where its vintage reliability and proven efficacy remain unmatched. Whether displayed as a **historical artifact** or repurposed for contemporary use, the WL-793 stands as a testament to Westinghouse s legacy in innovation and the enduring power of ultraviolet light in combating microbial threats.

### **Pros and Cons of buying a Westinghouse WL-793 Sterilamp UV Germicidal Tube (1950 NOS)**

#### **Pros:**

1. **High Germicidal Efficiency** The WL-793 is a proven germicidal UV-C lamp designed for sterilization, effectively neutralizing bacteria, viruses, and mold spores. Its 254 nm wavelength is optimal for disinfection applications.

2. **Long Lifespan (for a NOS Unit)** As a "New Old Stock" (NOS) item, this lamp was likely stored properly and may retain significant operational life, especially if it has not been exposed to excessive heat or power fluctuations.

3. **Compatibility with Older Systems** Many industrial, medical, and laboratory UV sterilization setups from the mid-20th century were designed to use this model, making it a reliable replacement for vintage equipment.

4. **Durable Construction** Westinghouse was known for robust manufacturing standards in its era, suggesting the lamp may be built to last with proper care.

5. **Potential Cost Savings** NOS lamps are often cheaper than new equivalents, especially if sourced from reputable dealers who verify authenticity and condition.

6. **Historical and Collectible Value** For enthusiasts or collectors of vintage electronics, this lamp may hold nostalgic or historical appeal.

---

#### **Cons:**

1. **Age-Related Wear** Being from the 1950s, the lamp may show signs of aging, such as degraded seals, cracked glass, or internal corrosion, which could reduce lifespan or performance.

2. **Limited Availability of Spare Parts** Finding replacement components (e.g., electrodes, seals, or wiring) for a 70-year-old lamp may be difficult or impossible, making repairs impractical.

3. **Safety Concerns** UV-C lamps emit harmful radiation; improper handling (e.g., direct exposure to skin or eyes) poses health risks. The lamp may also have outdated insulation or wiring that could pose electrical hazards.

4. **Performance Degradation** Over time, the UV output may diminish due to glass degradation or electrode wear, reducing effectiveness. Testing with a UV meter is recommended before use.

5. **Compatibility Issues** While designed for older systems, modern electronics or safety standards may not align with the lamp s specifications, requiring additional safeguards (e.g., timers, shielding).

6. **Environmental and Regulatory Risks** Older lamps may contain materials (e.g., mercury) that require proper disposal. Some regions have strict regulations on handling or disposing of UV lamps.

7. **Unreliable Power Requirements** The lamp may require specific voltage or ballast settings that are no longer standard, necessitating additional equipment to operate safely.

8. **No Warranty or Support** As a NOS item, there is no manufacturer warranty or technical support, leaving the user responsible for troubleshooting and maintenance.

---

### **Conclusion:**

The **Westinghouse WL-793 Sterilamp UV Germicidal Tube (1950 NOS)** is a functional and historically significant lamp with strong germicidal properties, making it a viable option for **restoring vintage UV sterilization equipment** or **specialized applications where compatibility with older systems is required**. However, its age introduces risks related to reliability, safety, and maintenance challenges. If you are an **enthusiast, collector, or technician working with historical equipment**, this lamp could be a worthwhile purchase with proper precautions. For **modern or high-volume applications**, a newer, tested, and warrantied UV lamp would be a safer and more practical choice.

---

### **Recommendation:** - **Buy if:**

- You have a specific need for a vintage-compatible UV lamp (e.g., restoring a 1950s medical or industrial sterilizer).

- You are prepared to inspect the lamp thoroughly (check for cracks, leaks, or corrosion) and test its UV output before use.

- You can safely handle and dispose of the lamp according to environmental regulations.

- You are willing to accept the limitations of an untested NOS item and have backup plans for repairs.

- **Avoid if:**

- You need a **reliable, long-term, or high-output** UV solution for modern use.

- You lack experience with **vintage electronics or UV safety protocols**.

- You cannot verify the lamp s condition or obtain proper disposal methods.

- You prioritize **warranty coverage, ease of maintenance, or compliance with current safety standards**.

For most **new applications**, investing in a **modern, certified UV-C lamp** (e.g., from brands like Philips, Sylvania, or UV Resources) would be the wiser choice. However, if you are committed to preserving or using historical equipment, the WL-793 can be a fascinating and functional addition with caution.

Details:

Up for sale is a vintage Westinghouse WL-793 Sterilamp ultraviolet germicidal tube, manufactured circa 1950s. Filaments/electrodes look unused or very lightly used. Fragile glass item handled with extreme care. No original box, new tube packaging.

This is a 70 year-old vintage UV lamp. These were commonly used in Pieces like this are becoming increasingly hard to find especially apparent condition. This is an original UV sterilization lamp used in medical, laboratory, and industrial equipment of the period. Collector Note.

Examples of these early Westinghouse Sterilamp especially with original documentation and in this condition are increasingly scarce make excellent additions to vintage electronics or scientific collections. Untested for UV output. Sold as a collector/restoration item due to inability fully test. Glass is clear and clean with no cracks or chips.

Westinghouse Sterilamp WL-793. Scientific and industrial equipment. Excellent physical condition. Internal structure appears intact with no visible darkening or wear.

Based on visual inspection, this tube appears to be unused NOS or minimally used, but I cannot guarantee. Sterilamp like the WL-793 were designed to emit germicidal ultraviolet UV-C radiation for sterilization purposes. Water/air sterilization systems. Hospitals and labs.

About This Lamp. As I am not able to test under operating conditions due the high- voltage setup needed safely power this lamp and can verify UV output or mercury vapor condition. With no guarantees of functionality. Shows age, staining, and wear see photos.

Due to the specialized nature of testing, it is sold. Original printing is still visible and legible. Original Westinghouse datasheet/manual sheet.

part #: wl793 prices

  • $26.99-$59.00

specifications tubesocketvintagego:

  • brand: Westinghouse
  • mpn: Wl-793
  • type: Nos Tube
  • unit type: Unit
  • country of origin: United States

seller tubesocketvintagego:

  • # reviews: 344
  • rating: 100.0%
  • city: Gaithersburg, Maryland

shipping tubesocketvintagego:

  • transit: 4-9 Days
  • class: Standard
  • service: USPS Ground Advantage
  • cost: $0.00
  • type: Calculated
  • carrier: USPS

payments tubesocketvintagego:

  • wallet: Paypal
  • other
  • credit card: Visa

general tubesocketvintagego:

  • Vintage Audio Video > Vintage Parts Accessories > Vintage Tubes Tube Sockets
  • condition: For parts or not working

offer tubesocketvintagego:

  • availability: In Stock
  • sold: 0
  • started: March 22, 2026
  • options: Ship-to-home
  • quantity: 1

returns tubesocketvintagego:

  • policy: No Returns
type: nos tube, unit type: unit, country of origin: united states,
category: electronics > vintage audio video > vintage parts accessories > vintage tubes tube sockets, sku: 11081699325512891,
Westinghouse WL-793 Is Similar To:
tubesocketvintagego logo
5 offers $26.99–$59.00 USD
  • New. Offer #1 priced at $50.00 + $8.60 shipping estimate = $58.60* total. +$8.60 shipping
  • New. Offer #2 priced at $59.00 + $6.90 shipping estimate = $65.90* total. +$6.90 shipping
  • New. Offer #3 priced at $26.99 + $14.95 shipping estimate = $41.94* total. +$14.95 shipping
  • Open box. Offer #4 priced at $40.00 + $4.47 shipping estimate = $44.47* total. +$4.47 shipping
  • New. Offer #5 priced at $140.00 + $6.50 shipping estimate = $146.50* total. +$6.50 shipping

Copyright © tubesocketvintagego.com