Backflow Preventers

Place Of Origin: China

Minimum Order: 1

Packaging: Wooden Crate

Delivery: Within 30 days

Festures of Backflow Preventers

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

Body is streamlined with little resistance loss；

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

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

Backflow Preventers Working Principle

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.

Backflow Preventers Installation and Commissioning

This valve must 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 it should not be flooded by water or debris, and the installation area should be equipped with drainage facilities. For specific use, please consult ZECO Valve Group.

Backflow Preventers Material and Standard

Size Range: 2"~12"

Pressure Rating: 10bar ~ 25bar

Face to Face Dimensions: AMSE B16.10, EN558-1

Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2

Coating: Fusion Bonded Epoxy Coating

Inspection and Test: ISO 5208 / EN 12226-2

Part Material Standard

Body Ductile Iron EN 1563/DIN 1693

Bonnet Ductile Iron EN 1563/DIN 1693

Seat CuZn39Pb1 / C37000 EN12167/ASTM B135

Stem Stainless Steel 431 EN10088-1/ASTM A959

Spring Stainless Steel 431 EN10088-1/ASTM A959

Seal EPDM / NBR ISO 4633

For materials options not listed, consult factory.

Zeco manufactures valves in more than 50 different alloys.

ZECO Valve Group is an experienced valve manufacturer. We provide china valve, water valve, 2.5 inch backflow preventer, double backflow valve, 4 double check backflow preventer, 6 rpz backflow preventer, rpz backflow prevention, 3 inch backflow valve, etc. Contact us to know where to buy backflow preventer or more.

There are many backflow preventer suppliers, but we are one of the best choices for you.

Country: China (Mainland)
Business Type: Manufacturer
Market:G20,Asia,Middle,Europe
Founded Year:1991
Address:No.3999, Cao'an Road, JiaDing District, Shanghai, China
Contact:Jerry Zhao

*Your name:	Enter name here eg:Ralph zhang
*Your Email:	Enter email here
*To:	ZECO VALVE GROUP CO., LTD.
*Subject:
*Message:
	Enter between 20 to 3,000 characters. English only. Characters : 0 / 3000
*Enter the secure code shown below	Reload Image

		We do inquire for you , please wait ...

Modulating Float Valve

Metal Seated Gate Valve

Manual Balancing Valve

Lug Butterfly Valve

Knife Gate Valve

Bedsore Prevention Pad

Meddo offers high-quality bedsore prevention pads. Our pressure pads for bed sores are specifically designed to provide comfort and prevent the development of bed sores. With our high-quality materials and innovative design, our bed sore pads offer superior pressure relief and ...

Shanghai Meddo Medical Devices Co.,Ltd

Bedsore Prevention Pad

Shanghai Meddo Medical Devices Co.,Ltd

Bronze Backflow Preventer

Bronze Backflow Preventer Backflow preventer for sale is a hydraulic control combination device that strictly limits the water flow in the pipeline to only one-way flow according to the situation that the backflow pollution of the tap water supply equipment, especially the ...

Zhejiang Carbo Bronze Co., LTD

Backflow Preventers

Product Quick Detail

Specifications

ZECO VALVE GROUP CO., LTD.

Send inquiry / quota request to Backflow Preventers

Other products from ZECO VALVE GROUP CO., LTD.

Relate products of Backflow Preventers

Social Connect

Ask / Review Mfrbee.com

Contact Us