Concealed Pendent · Standard & Quick Response
Concealed pendent fire sprinklers for ceiling installations, available in standard response and quick response versions. Both response types offer metric K80 and K115 options. Select the response type and K-factor, then specify the temperature and matched cover assembly.
Use the model references to identify repeat orders. Specify the matched cover assembly, connection and marking required.
Product presentation
Review the concealed sprinkler mechanism, cover plate assembly and real product samples with different glass-bulb temperature colors. The product markings remain visible for model identification.
Technical overview
The standard response version uses a 5 mm glass bulb. The quick response version uses a 3 mm glass bulb. Both are available in DN15 and DN20 configurations.
Available configurations
Compare the four configurations below: standard or quick response, each with either metric K80 / DN15 or metric K115 / DN20. Then specify temperature, thread, finish and the matched cover assembly.
| Response type | Nominal size | K-factor | Temperature options | Model |
|---|---|---|---|---|
| Standard Response5 mm glass bulb | DN15 / ½ in | K80 metric / K5.6 US | 57, 68, 79, 93, 141°C | ZSTDY 80-[T]°C Q5A |
| Standard Response5 mm glass bulb | DN20 / ¾ in | K115 metric / K8.0 US | 57, 68, 79, 93, 141°C | ZSTDY 115 / Q5A |
| Quick Response3 mm glass bulb | DN15 / ½ in | K80 metric / K5.6 US | 57, 68, 79, 93, 141°C | ZSTDY 80-[T]°C Q3A |
| Quick Response3 mm glass bulb | DN20 / ¾ in | K115 metric / K8.0 US | 57, 68, 79, 93, 141°C | ZSTDY 115 / Q3A |
OEM / ODM support
Product marking, chrome-plated or natural copper finish, thread form, cover configuration and export packaging can be reviewed against the selected model and approved sample.
Compare the specifications for each named configuration below. Values apply only to the configuration shown.
These values apply to the DN20 / K115 standard-response model at 57°C. The sprinkler temperature does not specify the cover release temperature; order a matched cover assembly.
Specifications for this 79°C model. Select the connection size and matched cover assembly with the order.
DN20 nominal size. Specify the thread size and matched cover assembly when ordering.
DN15 nominal size with an electroplated copper frame. Select the thread size and matched cover assembly with the order.
Working-pressure upper limit for this DN15 model. Select the exact thread size and matched cover assembly when ordering.
Specifications for the 3 mm glass-bulb model at 93°C. Select the thread size and matched cover assembly with the order.
Specifications for the DN15 standard-response model at 141°C. Order a matched cover assembly; the sprinkler rating does not specify the cover release temperature.
Compare the construction and visible markings. Open a photograph to enlarge it; confirm the required configuration with the quotation.
Start with standard or quick response, metric K80 or K115, and quantity. Add temperature, connection, finish, matched-cover requirements and destination when available.
