Backflow Preventers

• 

ZECO Valve Group is established in 1991, as an experienced china valve manufacturer. We have 5 factories in China, which are located in Shanghai, Yancheng and Wenzhou, which mainly manufacture pressure reducing valve, pressure relief valve, balancing valve, PICV, water valveand industrial valves.

Festures of Backflow Preventers

lThe double check valve is designed as a whole, with small structure；

lBody is streamlined with little resistance loss；

lCombination of a double check valve and safety drain valve can completely prevent backflow pollution under any working condition；

lAll moving parts are made of non-rust and wear-resistant materials with long service life.

As one of the backflow preventer suppliers, ZECOoffers many high quality produxts, such as 2.5 inch backflow preventer, 4 double check backflow preventer, 6 rpz backflow preventerand so on. Backflow preventers for two check valve series, when one of the seal damage, the other also ACTS as a seal to prevent backflow. However, when the sealing of two check valves is broken at the same time, the check function is lost. Backflow preventers on the common type of foundation in the middle of the drain, so even if two check valve sealing at the same time damage, it can also play a role in preventing backflow pollution.

This double backflow valvemust be installed horizontally, the environment of the installation site should be clean, there should be sufficient maintenance space, the main degree of safety drain or (air barrier) outlet is more than 300mm above the ground, and 3 inch backflow valveshould not be flooded by water or debris, and the installation area should be equipped with drainage facilities. If you don’t know where to buy backflow preventer, please consult ZECO Valve Group.

Backflow Preventers Material and Standard

Size 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

Other supplier products

	Gate Valve	Gate Valve ZECO is one of the professional gate valve manufacturing companies, specializing in the production of wedge gate valve and through cond...
	Pressure Relief(Sustaining) Valve 1125	Basic informationThis sustaining valveis opened to prevent the pipeline and equipment from being damaged due to overpressure when the pressure in t...
	Flanged Concentric Butterfly Valve	Basic informationThis Flanged is used in various service and drain lines as truncation and regulating equipment.Features1. Bidirectional sealing, n...
	4 Inch Gate Valve	Description of 4 Inch Gate Valve: ZECO 4 inch 4 inch flanged gate valveis one of the most commonly used calibers. Gate valve in the line just swit...
	3 Inch Butterfly Valve	Description of butterfly valve 3 inch: ZECO 3 inch butterfly valve is a small diameter butterfly valve, usually manually operated, and the connect...

Same products

	Microcrystalline wax 80A used for thickener	Seller: Syntop chemical Co.,Ltd.	Microcrystalline wax is a commonly used thickener, which mainly utilizes its characteristics of h...
	Microcrystalline wax used for rubber additive	Seller: Syntop chemical Co.,Ltd.	Microcrystalline wax has a wide range of industrial applications, primarily serving as a grease t...
	OPE WAX used for improving the wear resistance of the coating	Seller: Syntop chemical Co.,Ltd.	OPE wax has a wide range of applications, with its core value lying in its excellent internal and...
	Bamboo Thermos Flask	Seller: 865087	Yongkang Aijun Industry & Trade Co., Ltd. offers Bamboo Thermos Flask products combining a na...
	150TPD Wheat Flour Mill Plant	Seller: solve these problems	150TPD Wheat Flour Mill Plant CAPACITY: PROCESSING 150TONS WHEAT PER 24HOURS Struct...