3mm Fast response sprinkler bulbs
| Size（mm） | Temperature Rating (℃/°F) | Color | |
| A | 2.4 | 68℃ / 155°F | red |
| B | 1.5 | 79℃ / 175°F | yellow |
| C | <4.2 | 93℃ / 200°F | green |
| D | 3±0.1 | 141℃ / 286°F | blue |
| d1 | 3.5±0.4 | ||
| d2 | 3.5±0.3 | ||
| L | 23±0.5 | ||
| l1 | 20±0.4 | ||
| l2 | 19.8±0.4 | ||
| Glass bulb load（N） | Average Cursh load（X） | 3600 | |
| lower Tolerance Limit（TL） | ≥1600 | ||
| Maximum clamping torque | 6.5 N·cm | ||
| Response time index（m*s）0.5 | RTI≤50 | ||
The printed text on 3mm sprinkler bulb is "ZJCY". Compared with 5mm sprinkler bulb, its response will be faster, RTI ≤ 50, where RTI is a coefficient measured under standard conditions to measure the sensitivity of sprinkler bulb. Expressions:RTI= τ u ½
Where: RTI - response time coefficient, unit (m * s) ½;
τ－ Response time constant, in s;
u - gas flow rate, unit: m / s
The quality of the sprinkler bulb fully complies with the Chinese national standard GB18428-2010. The diameter of the sprinkler bulb is 3mm, and the deviation from the nominal diameter will not exceed ± 0.1mm; Its length is 23mm and the deviation from the nominal length will not exceed 0.5mm.
The average crushing load of the sprinkler bulb is 3600n. During the test, the sprinkler bulb will be fixed between the supporting elements in an appropriate way, and the supporting elements are made of steel. The Rockwell hardness is (44 ± 6) HRC, which meets the corresponding service requirements. Then, apply a uniform load along the axis of the sprinkler bulb until the sprinkler bulb bursts, and the rate of load increase is (250 ± 25) N / s. The maximum deviation of the equipment used to measure the crushing load shall not exceed ± 1% of the measured value. Use multiple groups of measured data to calculate the average value and standard deviation of the crushing load and judge whether the results meet the specified standards.
My company's main fire products are: sprinkler head, spray head, water curtain sprinkler head, foam sprinkler head, early suppression quick response sprinkler head, quick response sprinkler head, glass ball sprinkler head, hidden sprinkler head, fusible alloy sprinkler head, and so on.
Support ODM/OEM customization, according to customer requirements.
1.Free sample
2.Keep you updated with our production schedule to ensure you know each process
3.Shipment sample for checking before shipping
4.Have a perfect after-sales service system
5.Long term cooperation, price can be discounted
1.Are you a manufacturer or trader?
We are professional manufacturer and trader for more than 10 years, you are welcomed to visit us.
2.How can I get your catalog?
You can contact via e-mail, we’ll share our catalog with you.
3.How can I get the price?
Contact us and tell us your detail requirements, we’ll provide accurate price accordingly.
4.How can I get sample?
If you take our design, the sample is free and you pay shipping cost. If custom your design sample, you need to pay sampling cost.
5.Can I have different designs?
Yes, you can have different designs, you can choose from our design, or send us your designs for custom.
6.Can you custom packing?
Yes.
The products will pass strict inspection and screening before leaving the factory to eliminate the output of defective products
We have many imported processing equipment to support the manufacturing of various fire sprinklers, hardware and plastics.
