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Main Technical Data
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Diameter
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DN15 DN20
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Material
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Zinc Alloy or Brass
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Type
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Pendent/Upright/Side Wall/Concealed/ESFR
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Model
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ZSTZ/ZSTX/ZSTBS/ZSTP/ZSTDY/ZSTY
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Critical Temperature
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68/79/93 Degrees Celsius
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Bulb Diameter
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5mm 3mm
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Response Time
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15seconds in general for 5mm glass bulb
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8seconds in general for 3mm glass bulb
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Response Time Index RTI (m·s)0.5
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87 for 5mm glass bulb
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22—25 for 3mm glass bulb
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Flux Coefficient
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80 for DN15 115 for DN20
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Max. Working Pressure
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175 psig/1.2 mpa (12 bar)
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Factory Hydrostatic Test
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100% @ 500psig (3.4 mpa)
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Min. Operating Pressure
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7 psig/0.048 mpa (0.48 bar)
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Escutcheon Finish
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Chrome Plated or White Paint
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