I. Description:

Model ZSTYS20 earlysuppression fast response sprinkler (ESFR) meansRTI=28±8(m?s)? and it is usedfor protecting high stow and high warehouse. It is speciallydesigned for high dangerous fire.

II. Characteristics:

Model ZSTYS20 earlysuppression fast response sprinkler (ESFR) is composed of glassbulb, copper alloy frame and sealed element, etc. with compactstructure and exquisite appearance.

1. The frame of sprinkleradopts copper alloy precision forging with high strength andcorrosion resistance.

2. Both temperature sensitiveelement (glass bulb) and washer are imported from Germany. The glassbulb has high strength with reliable operation and quick reactionand washer with high ageing and corrosionresistance.

III. Technical data:

Nominal diameter(Orifice): 20mm, ConnectingScrew: R3/4", 100%testing.

Rated workingpressure: 12Bar, TestingPressure: 30Bar, 100%testing

K Facot: K=200metric（K=14）

Diameter of GlassBulb: F2.5mm

Operation Temperature:68°C(155°F)

Max. Coverage Area:9.3Square meters

Min. CoverageArea: 7.4Square meters

Weight: App.235grams

Material: Copper alloyframe

Installation:Thisproduct can only be installed pendent with the deflectordownwards.