Vertical Flame Test Chamber
Category：Flammability Tester
Introduction
The Vertical Flame Test Chamber is designed to measure the vertical flame spread of textiles, fabrics, and resilient filling materials. It is widely used for children’s sleepwear, upholstery, household fabrics, and other materials requiring fire safety assessment. The chamber provides precise, controlled flame exposure, ensuring compliance with international and national flammability standards.
Application:
The vertical burning of textiles is suitable for all types of fabrics and their products. Test method applicable to the burning performance of the bottom edge of the vertical textile specified in GB5455-2014 standard.
Standards
(1) ASTM D6413 – Standard Test Method for Flame Resistance of Textiles (Vertical Test)
(2) CALIF TB117 – California Technical Bulletin 117 for upholstered furniture
(3) DOC-FF 3/71 – US Department of Commerce flammability test
(4) 16 CFR Parts 1615/1616 – US flammability standards for children’s sleepwear
(5) FTMS 191-5903 – US military textile flammability test
(6) CPAI 84 – Sleepwear flammability standard
(7) FAR 25.853 – Federal Aviation Regulation for aircraft materials
(8) GB/T 5455 – China flammability test for textiles
(9) NFPA 701 (small scale) – Flame propagation testing for textiles
(10) CAN/ULC S109 – Small flame test for Canadian standards
(11) UL 214 – Vertical flame resistance of textiles
(12) CA Title 19 – California fire safety standard
Parameter:
| Item | Parameter |
| Inner size | About 330*330*765mm. |
| Windows | tempered glass observation window |
| Exhaust holes | 16pcs proof holes,6pcs each side(total 12pcs) |
| Exhaust diameter | 12.5mm |
| Proof hanging clamp | located 17mm above the highest point of the igniter nozzle. |
| Diameter of the igniter nozzle | 11mm |
| Angle about the head and vertical line | 25° |
| inlet gas pressure of the igniter | 17.2kpa±1.7kpa |
| Ignition time | accurate to 0.05s |
| Gas source | industrial grade propane, butane or propane / butane mixed gas. When the sample is pretreated according to 7.3 in GB5455-2014. methane gas with a purity of not less than 97% is selected. |
| Sample size | 300*89mm, five horizontal and vertical |
| Ambient temperature | -10 ° C ~ 30 ° C |
| Power supply voltage | 220V±10% 50HZ |
| Power | less than 100W |
| Flame time | 0-99M99S |
| Flame time accuracy | ± 0.01s |
| Afterglow time | longest 0-99M99S |
| Blue flame height | 15mm-175mm with flame height scale |
| Ignition time | any setting (can be preset) |
Features:
Gas pipeline system special designed, low space occupied, and convenience to move;
Exhaust vents at the bottom and top of test chamber ensure good ventilation and steady flame;
LED displayer shows the igniting time, afterflame time and afterglow time, with high working efficient and the data more accuracy;
A stainless steel construction, large glass-viewing window;
Excellent reliability and minimum maintenance;
Purpose-designed test chamber.
Accessories:
Standard accessories:
1Set Tearing weights
1pc Sample holder
1pc Flame measuring scale
1pc Power line
Optional accessories:
Optional Φ 11mm Nozzle
Optional Φ10mm Nozzle
Optional CFR1615,1616 holder and tear weights
Optional ASTM D6413 holder and tearing weights
Vertical Flammability Test (V and 5V Levels)：
The vertical flammability test evaluates a material’s ability to self-extinguish when exposed to flame in a vertical orientation. There are two main classifications:
1. V-level (50W) Classification: In this test, a 50W flame is applied to the bottom of the sample for 10 seconds, and the time it takes for the flame to extinguish is measured. Materials classified as V-0, V-1, or V-2 must meet specific self-extinguishing criteria. V-0 is the highest rating, indicating that the material stops burning within 10 seconds and does not drip flaming particles.
2. 5V-level (500W) Classification: This test is more stringent and applies a 500W flame to the material for 5 seconds. To pass the 5V test, materials must not burn for more than 60 seconds after the flame is removed, and they should not produce flaming droplets.
| Classification | After-flame Time (s) | Dripping | Application |
| V-0 | ≤10 | No dripping | Electrical enclosures, appliances |
| V-1 | ≤30 | No dripping | Household appliances |
| V-2 | ≤30 | Flaming droplets | Low-risk electrical components |
| 5V | ≤60 | No dripping | High-risk electrical environments |
Conclusion
The Vertical Flame Test Chamber provides accurate, repeatable assessment of vertical flame spread for textiles and upholstered materials. Its design ensures compliance with global standards, protecting manufacturers, consumers, and regulatory compliance requirements.
FAQ
(1) What is this product?
A testing chamber for measuring the vertical flame spread of textiles, fabrics, and filling materials.
(2) What is this product used for?
To evaluate fire resistance and self-extinguishing behavior of materials under vertical flame exposure.
(3) What is the working principle of this product?
The sample is vertically clamped and exposed to a controlled flame; afterflame and afterglow times are measured to classify material performance.
(4) Why is this product important?
It ensures materials meet fire safety standards, minimizing hazards in textiles, clothing, and upholstered furniture.
(5) Which industries is this product suitable for?
Textile manufacturing, furniture and upholstery, household appliances, aviation, and consumer safety testing.
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