Product Features

Flanged duckbill valve can effectively prevent seawater and sediment invasion. There is a certain density difference between seawater and discharged sewage, when the amount of sewage discharged is small, the traditional outlet diffuser due to the nozzle jet velocity decreases, this density difference will cause seawater invasion of the diffuser, and the seabed environment sediment into the diffuser. The flanged duckbill valve outlet changes with the change of outflow, closes when the discharge volume is zero, and maintains a higher jet velocity when the discharge volume is low, thus preventing the invasion of seawater and environmental sediment.

Flanged rubber duckbill valve products are mainly used in waterproofing systems, discharge systems, pump outlets, lift pumping stations and submerged aeration systems. Main features: The rubber flange is integrated with the valve body, making installation extremely easy. The valve body adopts full rubber design, which will not cause siltation and stuff jamming phenomenon, reducing maintenance costs and allowing solid particles to pass through smoothly.

Flanged rubber duckbill valve size standard: in common parlance there are two installation sizes in the country. An installation size to the national standard flange connection, which is very early design out of the duckbill valve, in order to match with the ~ standard, the flange standard of the duckbill valve below the caliber of 800 refers to the national standard ten kilograms of bolt hole center distance and flange outside diameter, more than 800 pipe diameter, with reference to the national standard 6 kilograms of bolt hole center distance and flange outside diameter. Another in the installation size is its own size, the size is different from ~ standard.

Made of rubber flange, valve body and duckbill as a whole, with gasketed metal flange, can be naturally connected with the metal flange, directly installed in tanks, pipelines and cofferdams. When installing and connecting, the flange and connecting flange size corresponds to ensure that the connection is really sealed after fastening, but also pay attention to not touch the flange lip of the rubber sewage check valve.

The rubber flange and the valve body are integrated, and the installation is extremely convenient. The valve body adopts all-rubber design, which will not cause siltation and stuff stuck phenomenon, reduce the maintenance cost, and allow solid particles to pass through smoothly.

Product Case

Gongyi Dongli Supplies Professional Flanged Duckbill Valves to Taicang City~Chemical Treatment Project

In the afternoon of January 18th, Taicang City, Jiangsu Province kitchen waste resource utilization and ~ization treatment project officially started.

Taicang City kitchen waste resource utilization and ~ chemical treatment project in 2015 completed the environmental assessment, feasibility study, land acquisition, Development and Reform Commission project, stability assessment, energy assessment, safety assessment, vocational assessment has entered the expert review stage, the planning of the general plan has been reported to the Housing and Construction Bureau for review and approval, is currently in the process of planning drawings for review and publicity, construction drawings for review and approval, the construction unit bidding contracting and power connection and water connection and other pre-construction related preparations. Work. It is expected that the civil construction work will be completed and put into trial operation by the end of this year.

Gongyi Dongli supplied professional flanged duckbill valves to Taicang City~Chemical treatment project. Dongli flanged duckbill valves can effectively prevent the invasion of seawater and sediment. There is a certain density difference between seawater and discharged sewage, when the amount of sewage discharged is small, the traditional outlet diffuser due to the nozzle jet velocity decreases, this density difference will cause seawater invasion of the diffuser, and will be the seabed environment sediment into the diffuser. The flange type duckbill valve outlet changes with the change of flow rate, closed when the discharge is zero, and can maintain a higher jet velocity in the case of lower discharge, thus preventing the intrusion of seawater and environmental sediment.

Ordering instructions

1、Customers with special requirements for the product must provide the following instructions in the ordering contract:

(1) Structure length

(2) Connection form

(3) Nominal diameter, full diameter, reduced diameter, pipe size

(4) The use of media and temperature, pressure range

(5) experiments, inspection standards and other requirements of the factory can be customized according to customer special requirements configuration and design of special products.

2、The factory can customize and design special products according to customer's special requirements.

3、If the product type and model are provided by the customer, the customer should correctly explain the meaning and requirements of the model, and sign the contract under the condition that the supply and demand sides understand each other.