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 DQ4 BROWN BOVERI DQ 4 BBC TUBE NOS US $199.90 
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 DQ2 BROWN BOVERI DQ 2 BBC TUBE NOS US $159.90
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 TS2 BROWN BOVERI TS 2 BBC TUBE NOS US $69.90
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 Lot of 5 NOS Russian Tubes GU50, Pentodes US $49.50
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 NOS ZAERIX 12AU7/ECC82 Power Electron Tube Amplifier US $1.00
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 NOS 6GH8A Vacuum Tube Tested Various Brands US $11.00
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 NOS 6AF4 Vacuum Tube Tested Various Brands US $13.00
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 12BY7A tubes NOS Jan Sylvania and GE (5 pcs.) US $66.99
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 NOS Tung Sol 8236 Vacuum Tube Ultra Rare Tested Strong US $100.00
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 Tube - Sylvania 6BK5 Electronics Tube - NOS -Tested US $5.25
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 Tube - GE 10C8 - Electronics Tube-NOS-Tested US $5.25
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 Tube - GE 5AS8 - Electronics Tube - NOS - Tested US $5.25
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 Tube - GE 2BN4 - Electronics Tube - NOS - Tested US $5.25
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 One pcs of BURLE 8122 Beam Power Tube, NOS US $124.99
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 GE 6KD6 Tube Test @110% - Nice extra Hot tube!! NOS US $47.95
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 NOS NIB Johnson 122-105-200 Tube Socket US $25.00
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 (1) Westinghouse 6KM6 Tube Test @100%- NOS matched code US $16.95
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 5 NOS National * 5651 * Tubes (5651A Similar) US $19.95
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 5 NOS RCA * 5642 * Tubes US $29.95
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 TWO NEW OLD STOCK IN THE BOX MATCHED G.E. 6JS6C TUBES FOR YAESU & OTHERS US $60.00
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 6LR6 Power Amp Tube Tests100+% NOS Various Brand Names US $29.95
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 5 NOS Sylvania * 12HL7 * Tubes (12BY7 Similar) US $14.95
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 NOS RCA 8058 Nuvistor Tube US $7.00
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 6883B/8032A/8552 transmitting tubes NOS 5 pcs. RCA+GE original box. US $39.99
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 5 NOS GE * 8136 * Tubes US $17.50
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 Vintage - NOS! (New Old Stock) Eimac VT129 304TL tube, never used, hard to find US $41.00
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 Vintage - NOS! Amperex 5867 tube, unused, new in box, Made in France, nice! US $29.99
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 6155 RS685 RS1007 Siemens Tube NOS (20 available) US $59.00
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 EI Yugo 12AX7/ECC83 vacuum tubes NOS new unused in boxes (8) pc. lot tested US $319.90
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 12AX7/ECC83 vacuum tube NOS Amperex BB tested strong. US $89.90
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 Sleeve/Five NOS JAN/Sylvania Type 6X4WA Vacuum Tubes w/Boxes - Free Shipping US $39.00
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 NOS MACO 10C VFO SLIDER CB RADIO 11 METER CHANNELS TRAM TUBE RADIO US $29.99
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 NOS GENERAL ELECTRIC 6JB6A TUBE SET for DRAKE t-4XT-4XB T-4XC or T-4 #E49 US $36.55
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 NOS GENERAL ELECTRIC 6JB6A TUBE SET for DRAKE TR-4 TR-4C TR-4CW #E48 US $38.10
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 NOS RCA 6JB6A TUBE SET for DRAKE TR-4 TR-4C TR-4CW #E50 US $38.10
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 NOS SYLVANIA 6JB6A TUBE SET for DRAKE TR-4 TR-4C TR-4CW #E47 US $56.55
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 NOS WESTINGHOUSE 6JB6A TUBE SET for DRAKE t-4XT-4XB T-4XC or T-4 #E46 US $38.10
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 4 GENERAL ELETRIC. 6HF5 TUBES for SWAN 350 or 500 TEST NOS #E41 US $1.82
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 4 GENERAL ELETRIC. 6HF5 TUBES for SWAN 350 or 500 TEST NOS #E42 US $15.99
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 4 GENERAL ELETRIC. 6HF5 TUBES for SWAN 350 or 500 TEST NOS #E40 US $2.50
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 4 GENERAL ELETRIC. 6HF5 TUBES for SWAN 350 or 500 TEST NOS #E39 US $1.29
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 2 NOS GENERAL ELECTRIC 6146B TUBES N.I.B. #E35 US $11.50
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 2 NOS GENERAL ELECTRIC 6JS6C TUBES N.I.B. #E28 US $.99
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 4 RCA NOS 6JS6C TUBES N.I.B. #E27 US $2.48
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 5 RCA 6LQ6 6JE6C TUBES TEST NOS #E26 US $137.50
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 2 NOS WESTINGHOUSE 6LQ6 6JE6C N.I.B. TUBES #E25 US $1.29
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 2 NEC 6JS6C TUBES TEST NOS #E24 US $17.50
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 2 NOS AMPEREX 6JE6C 6LQ6 TUBES #E23 US $41.01
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 PAIR OF NEW OLD STOCK BOXED RCA 6883B (12 VOLT 6146B's) BEAM POWER OUTPUT TUBES US $36.00
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 2 NOS JAN/GE Type 6SJ7 Vacuum Tubes w/Boxes - Free Shipping US $29.00
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 Sleeve/5 NOS GE Type 6AK5 Vacuum Tubes w/Boxes - Free Shipping US $39.00
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 7 NOS National Type 6U8A Vacuum Tubes w/Boxes - Free Shipping US $99.00
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 4 NOS Tung-Sol Type 8445 Vacuum Tubes w/Boxes - Free Shipping US $19.00
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 NOS RCA 5823 Tube (many in stock) US $5.00
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 GENERAL ELECTRIC 7370 TUBE - NEW / NOS BOXED US $11.99
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 6922(E88CC)Original Tesla gold pin NOS tubes (3) pcs. Czech made tubes US $189.90
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 6SJ7WGT (9) pcs. NOS tubes tested JAN Sylvania US $109.90
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 GE PAIR VACUUM TUBES TYPE 6146B NOS US $9.99
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 NIB NOS tube set for ARC-5 & Command receivers US $34.00
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 Tube - CBS - 6AC7 - NOS-Tested - Good US $5.25
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 Tube - GE 6FM8 - Electronics Tube - NOS - Tested US $5.25
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 Tube - GE 8CX8 - Electronics Tube - NOS - Tested US $5.25
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 Tube - Tung-Sol 7A6 - Electronics Tube - NOS - Tested US $5.25
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 Tube - GE 8CN7 - Electronics Tube - NOS - Tested US $5.25
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 Tube - GE 8EB8 - Electronics Tube - NOS - Tested US $5.25
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 Tube - GE 6BC7 - Electronics Tube - NOS - Tested US $5.25
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 Tube - GE 4JD6 - Electronics Tube - NOS - Tested US $5.25
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 Silvertone 312/ 6W6GT Radio Tubes NOS US $5.99
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 GE JAN-CG 6AC7WA 57-26/ 59-35/ 188-5 Radio Tubes NOS US $16.99
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 Telefunkin UCC85 Glass Ham Radio Tubes NOS US $14.99
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 NOS WE 443A Tube US $3.00
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 Tubes for HEATHKIT SB LINE NOS TUBES 6BZ6 6EW6 6AU6 6AW8A 6CL6 US $14.95
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 Lot of 10 NOS Russian Tubes GU50, Pentodes US $80.00
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 EIMAC 4CX15000A Beam Power Tube (NOS) US $1,200.00
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 Tube - GE 8EM5 - Electronics Tube - NOS - Tested US $5.25
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 Tube - GE 5BT8 - Electronics Tube - NOS - Tested US $5.25
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 6 NOS 1952 National Union * 12AU6 * Tubes US $23.95
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 8417 Tube - RCA Brand Tested @ 110% Nice NOS Tube!!! US $69.95
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 NOS SOCKET FOR RUSSIAN TUBES GU 84B / GU84B, GU 78B II US $99.00
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 Tube - GE 12DT5 - Electronics Tube - NOS - Tested US $5.25
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 Tube - GE 5CQ8 - Electronics Tube - NOS - Tested US $5.25
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 Tube - GE 6EU8 - Electronics Tube - NOS - Tested US $5.25
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 NIB NOS tube set for the Hallicrafters SX-140 receiver US $32.00
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 NOS GE 38HK7 Tube US $1.00
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 EIMAC SK416 GLASS CHIMNEY FOR 3-500Z 4-400 HAM RADIO AMPLIFIER TUBE NOS? US $44.95
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 Tung-Sol JAN-CTL-3B24WA 61-35 Electron Amp Tube NOS (2) US $19.99
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 Russian NOS tube GU 74B / 4CX800 US $185.00
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 Russian NOS tube GU 74B / 4CX800 in BOX US $225.00
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 Tube, 12AV6, Channel Master, NOS US $5.00
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 Tube, 35B5, Raytheon, NOS US $7.00
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 NOS Archturus Blue Globe Type 37 Radio Tube Triode US $19.95
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 4 NOS HAM TUBES 2-6883 1- 6146A 1- 829-B US $34.99
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 4 AMPEREX HAM RADIO TUBES 2- 5894 2- 6146 NOS US $34.99
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 NOS tube set Hallicrafters S-119 Skybuddy ll US $23.50
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 4 NOS Zenith 6GH8A Vacuum Tubes NIB US $16.00
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 2 NOS Amperex JAN 6360 Vauum Tubes NIB US $13.00
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Nos Tube
How to Spot a NOS 6V6GT Vacuum Tube
A Review of Superior Radiant Infrared Tube Heaters
We're often asked "what sets Superior Radiant apart from other brands of infrared tube heaters?" That's a great question since all tube heater manufacturers are equal in their intent, that is - to heat building space using the infra-red heating principle.
Those who specify infra-red tube heating systems (ie., mechanical engineers) are particularly concerned that the brand they choose as the basis of their specification will stand the test of time and provide reliable, hassle-free performance for years to come. Simply put, they want to avoid potential complaints, costly callbacks and the responsibility of remedying a problem inherent in an inferior product they themselves recommended. To aid in your search for the best tube heater on the market, we offer the following:
Five Criteria for Choosing a Brand of Infra-Red Tube Heater
1) Reflector Design
2) Heat Uniformity
3) Serviceability
4) Construction Quality
5) Representation
Almost all tube heaters utilize a 4" dia. steel tube emitter. A burner on one end forces hot gases downstream through the tubes (between 10' and 70' in length - depending on burner size), emitting infra-red "radiant" energy around its' circumference. An optical reflector suspended over the top of the tubes is used to force the infra-red energy downward. This energy is then absorbed by floors and objects below, which heat up to warm the surrounding air.
Superior Radiant offers the only 10-sided reflector among all manufacturers. Its multi-faceted configuration reflects virtually 100% of the infra-red energy out and away from the emitter tubing, putting the heat where it is needed - the people zone. Infra-red energy "bounce-back" onto the tube is virtually eliminated and convective heat loss is minimized. Translation: more heat to the floor means less heat wasted at the ceiling - which means greater fuel savings and enhanced creature comfort.
By contrast, the poorest reflector consists of a flat top with two angled sides and may have a radiant effectiveness of only 50%. The Superior Radiant reflector is also the "deep dish" style, which means that the emitter tubes are recessed up inside, with 0% exposed below the sides of the reflector. Compare some other brands which may have up to 30% or more the tubing exposed below the bottom sides of the reflector, resulting in a high amount of energy loss into thin air that could have otherwise been reflected to the floors as usable heat energy.
An added benefit of Superior's 100% efficient reflector design is that it helps eliminate the "hot spot" effect. That's where back radiation of infrared energy onto the combustion tube can create excessive heat pile-up within the first several feet of the burner (where the flame is located and is at its hottest). A poorly designed reflector can cause the combustion tube to overheat and cause thermal breakdown of the tubing. The remedy - expensive tube replacement in as short as 5 years, usually at the owners' expense. Superior Radiant tube heaters eliminate that problem.
2) Heat Uniformity
The ideal tube heater would generate uniform heat temperatures along the entire length of the heater. Of course, simple fluid flow physics states that heat must dissipate as it travels away from the burner. However, Superior Radiant utilizes a patented "jet stream" burner, which shoots hot gases farther downstream and distributes heat more uniformly. By contrast, poor burner designs have a "lazy flame", whereby too much flame impinges on the top of the combustion tube, usually in the first 4 feet from the burner, resulting in an uncomfortable hot spot and adding to the aforementioned thermal breakdown of the tubing.
3) Serviceability
Ease of servicing is a primary concern with installers and building owners. Superior Radiant burner controls are easy to access through a simple drop down service cover, exposing the controls from three sides. Since the blower fan feeds air into a compartment separated from the pressure sensing controls, the service technician can make diagnostics while the blower fan is running. In addition, with controls isolated from the air stream, dust, moisture and other contaminants are less likely to corrode or adversely affect the operation of the heater over time. Superior Radiant tube heaters tend to withstand dusty and corrosive environments better than other brands.
4) Construction Quality
There is no substitute for actually seeing a product up close and "kicking the tires". This especially holds true for the variety of infrared tube heaters on the market today. The quality of Superior tube heaters is evidenced by a regard for design detail and an upgrade of materials wherever justifiable. Early on, Superior Radiant engineers designed and tooled components by analyzing the weaknesses and strengths of other brands in the industry. Primary components of an infrared tube heater consist of the burner/control box, emitter tubes, reflectors, couplings and hangers. Let's compare:
a) Superior's burner/control box is made of heavy-duty powder coated galvanized steel. It uses the most industry-proven name-brand controls. The innovative box design and layout of controls provides easy access for service.
b) 16 gauge steel tubing is the standard in the infrared industry. We suggest heat-treated aluminized. The aluminizing process alone provides corrosion resistance, but its silver color is a poor absorber of heat. Therefore, Superior heat-treats the tubes to create a nice gray/black color on the inside and outside of the tubes. This process dramatically increases emissivity (the ability of the tube to emit heat outward) while maintaining corrosion resistance. Some brands may choose to use non-heat-treated aluminized or even hot-rolled steel, which is subject to rust. The heat-treated tubes of Superior provide the best of everything. (Note that in extremely corrosive atmospheres, Superior Radiant offers stainless steel and a special protective coating called "silkote" to enhance life and performance).
c) Superior's reflectors are constructed of 24 gauge aluminum sheet metal (aluminum having the best properties for reflectivity). The number of bends helps to make the reflector more rigid and less susceptible to warping through the heat-up and cool-down cycles. For added strength and rigidity, Superior provides two reflector support brackets for each 10' reflector section, helping maintain visual integrity.
e) Superior uses 12" long heavy-duty double band couplings for connecting the 10' tube sections. They cannot be over-tightened, yet they can be easily removed if the system ever needs to be re-located, unlike the couplings on some brands. Superior couplings are often used for field repairs when couplings from other brands fail.
f) The entire Superior tube heater is supported by heavy-duty chrome plated hangars, which are generally spaced 10 feet apart and suspended from the ceiling with chain. These rugged hangers are designed to carry the weight of the entire system and can be turned to point reflectors on a 45 degree angle if needed.
The burner, emitter tubes, reflectors, hangers and couplings are the main components of an infra-red tube heater. Superior's strengths are found in all its parts, not just one or two. While other brands may have some good points, we contend that they fall short of meeting all of the criteria specifiers and building owners want.
5) Local representation
Regardless of the infrared brand you choose, make sure you buy from a qualified distributor who has the expertise to assist you during and after installation. A reputable distributor will stock heaters, parts and accessories and will stand by the manufacturer's product warranty period. You'll have peace of mind knowing that you'll be taken care of long after the sale.
About the Author
Scott Workman is president of Infra-Red Products Supply, Inc. with over 25 years in the infrared heating industry. To learn more about Superior Radiant gas infrared tube heaters, garage heaters, warehouse heaters, workshop heaters and energy saving heating systems, please visit www.infraredinfo.com and www.heatersunlimited.com.
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