Backflow Preventers

Basic informationThis underground gate valveis used as a two-way closed circuit device.Features1. No need for sluice Wells, which reduces the amount of installation work;2. Does not affect the traffic, and underground parts of the integration, effectively prevent theft;3. Stem has a special extendable structure, which can effectively prevent the ground from sinking;4. Long life, no internal leakage.PrincipleThis valve uses the form of pin coupling to transfer the sensor force existing in the gearbox and transmission shaft buried in the ground. The telescopic drive rod is extended until it is installed in the underground bonnet. This layout and approach ensure that work is done properly and efficiently.Installation and CommissioningConnect theunderground butterfly valvewith the water supply pipe, extend the expansion drive rod to the set height, tighten the expansion limit device to maintain the extension height, backfill the pipe groove, tamp and make cement pier foundation, put the valve box plate on the cement foundation, place the valve box cover, lay the road surface and make the valve box cover equal to the road surface. For specific use, please consult ZECO Valve Group.Product scope, Standards & MaterialsSize Range: 2"~12"Pressure Rating: 10bar ~ 25barFace to Face Dimensions: AMSE B16.10, EN558-1Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2Coating: Fusion Bonded Epoxy CoatingInspection and Test: ISO 5208 / EN 12226-2

ZECOis one of the most professional china check valve manufacturers, and we have been devoted to produce valve chinafor many years. If you want to know more details or want a quotation, just feel free to contact us!

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