Backflow protection devices - Watts Industries

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BACKFLOW PROTECTION DEVICES24Technical specificationsNominal flow 60 up to 250 mmOperating pressure max. 16 barTest pressure max. 24 barMax. temperature 65 °CMaterial specificationsBody / cover ductile iron GGG40Coating Epoxy Coated, RAL 5015Polymer parts PPO / PPRubber parts NBRApprovalsACSBelgaquaDVGWKIWANFWRASDimensionsACEDCVFBBCBGHArticle number Type DN CV A B C D E F G H308065361 FC065 (60) 65 CS100 290 G1/2 145 37.5 185 118 (135) 145 4 x 19308080361 FC080 80 CS100 310 G1/2 155 44 200 132 160 8 x 19308100361 FC100 100 CS100 350 G1/2 175 64 220 156 180 8 x 19
BACKFLOW PROTECTION DEVICESHA S8C/NF8 hose union backflow preventerAnti-siphon <strong>devices</strong> with atmospheric vent for hand-held showers and spigots forhose connections that are mounted downstream of the shut-off valve so that theyare not under continual pressure.25HA S8CHA S8C is an anti-siphon device with atmospheric vent forhand-held showers that are mounted downstream of theshut-off valve, so that they are not under continualpressure.311 2"Model: brass chrome plated (polished)Max. pressure: 10 barMax. temp.: 60 °C37Measurements subject to change without notice.Further technical specifications upon request.12"Operation321312321HA S8C in closed position.Valve 1 closes againstdiaphragm 2. Openings 3 tothe atmosphere are open.Before flow starts, openings3 are closed.Only then valve 1 opens.As the result of the loss ofpressure in the network,valve 1 closes againstdiaphragm 2, preventing anybackflow. Ports 3 areopened.HA NF8HA NF8 hose union backflow preventers are used with tapsfor hose connections and must be installed in a verticalposition. HA NF8 is constructed using a shear screw, whichmeans that it cannot be removed. When the ring is presseddown on the outside, in such a way as to prevent freezing ofthe tap and the atmospheric vent, the hose connected to itcan be tapped. This is mounted downstream of the shut-offvalve, and is thus not under continual pressure. Height >200 mm above the maximum downstream fluid level.Model:brassMax. pressure: 10 barMax. temp.: 60 °COperation: same as the HA S8CFurther technical specifications available upon request.383 4"3 4"51
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Backflow protection devices - Watts Industries

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