China wholesale Red Glass Bulb Sidewall Fire Sprinkler Head - sprinkler bulbs customized ( length, logo, temperature ) – Zhurong
China wholesale Red Glass Bulb Sidewall Fire Sprinkler Head - sprinkler bulbs customized ( length, logo, temperature ) – Zhurong Detail:
Size(mm) | Temperature Rating(℃/°F) | Color | |
A | 3.8 | 57℃ / 135°F | orange |
B | 2.02 | 68℃ / 155°F | red |
C | <4.5 | 79℃ / 175°F | yellow |
D | 5±0.1 | 93℃ / 200°F | green |
d1 | 5.3±0.2 | 141℃ / 286°F | blue |
d2 | 5.3±0.3 | ||
L | 24.5±0.5 | ||
l1 | 20±0.4 | ||
l2 | 19.8±0.4 | ||
Glass bulb load(N) | Average Cursh load(X) | 4000 | |
lower Tolerance Limit(TL) | ≥2000 | ||
Maximum clamping torque | 8.0 N·cm | ||
Response time index(m*s)0.5 | 80<RTI≤350 |
As a professional sprinkler bulb manufacturer, MH has its own special R & D team, which is committed to continuously improving the quality and characteristics of products and meeting the needs of various customers, including all the requirements for sprinkler bulbs in GB 16809-2008 for fire windows and GB / T 25205-2010 for shower heads.
Our sprinkler bulb can be applied to almost any place where temperature sensing sprinkler bulb release mechanism is needed, such as kitchen smoke hood, paint spraying room, fire damper, smoke exhaust fan, etc. In order to meet the different needs of our customers for sprinkler bulb size, specification and RTI, we have specially set up a standby assembly line and separate machine production. All products support OEM / ODM.
All sprinkler bulbs will be inspected when leaving the factory, including:
1. Appearance and size
Ensure that the outer surface of all sprinkler bulbs is not damaged, there are no bubbles or other impurities inside the glass material, and the bubble size in the working liquid of sprinkler bulbs of the same specification is uniform. The dimensional deviation of all sprinkler bulbs is within the specified allowable range. The temperature and color of all sprinkler bulbs are easy to identify.
2. Static operating temperature
The static operating temperature of all sprinkler bulbs shall not exceed the following temperature range: X ± (0.035x + 0.62) x refers to the nominal operating temperature, and the unit is Celsius (℃)
3. Crushing load
The average crushing load shall not be lower than the specified value, and the lower limit of crushing load error shall not be lower than 50% of the average crushing load.
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Dependable high-quality and fantastic credit standing are our principles, which will help us at a top-ranking position. Adhering to your tenet of quality very first, client supreme for China wholesale Red Glass Bulb Sidewall Fire Sprinkler Head - sprinkler bulbs customized ( length, logo, temperature ) – Zhurong , The product will supply to all over the world, such as: Bangladesh, Saudi Arabia, Suriname, To meet the requirements of specific customers for each bit more perfect service and stable quality merchandise. We warmly welcome customers around the world to visit us, with our multi-faceted cooperation, and jointly develop new markets, create a brilliant future!

Goods just received, we are very satisfied, a very good supplier, hope to make persistent efforts to do better.
