Groove rubber flap check valve

NegotiableUpdate on 02/01

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Nature of the Manufacturer: Producers

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Overview

Groove rubber flap check valve is a new type of check valve, which adopts groove type connection and is easy to install. With the flexible opening and closing of rubber flaps, the medium can flow in one direction, prevent backflow, have good sealing performance, and have low head loss. Suitable for water supply and drainage, fire protection and other systems, it can adapt to various pipelines, has high reliability, and is easy to maintain.

Product Details

Groove rubber flap check valveProduct Description

1、 Product Overview

Groove rubber flap check valveIt is an automatic control valve that integrates groove connection technology and rubber flap check function, mainly composed of a valve body, a valve cover, and a composite structure rubber flap. The rubber flap is made of steel plate and nylon cloth as the substrate, and the outer layer is covered with rubber. The switch life can reach 1 million times. The valve body is made of ductile iron material, and the inner and outer surfaces are treated with epoxy spraying to enhance corrosion resistance. The overall structural design is compact and suitable for fluid control needs of various pipeline systems.

2、 Working principle

Relying on the principles of fluid dynamics and gravity balance to achieve unidirectional medium control: when the medium flows forward, the pressure pushes the rubber flap to open, ensuring smooth passage of the medium; When the medium flow stops or reverses, the rubber flap closes under the combined action of its own gravity, elastic rebound, and reverse pressure, tightly fitting the bronze valve seat to form a seal and prevent the medium from flowing back. The elastic properties of rubber flaps can slow down the closing speed and help weaken the impact of water hammer on pipelines.

3、 Core Performance and Technical Parameters

（1） Key Performance

Connection performanceAdopting a groove type connection, it conforms to standards such as AWWA C606. Installation does not require complex processes and is easy to maintain in the future. It can adapt to the coaxial deviation and temperature difference deformation requirements of pipelines within a certain range.

Fluid performanceAdopting a full flow area design, the head loss is small, and it is not easy for debris to accumulate inside, which can maintain long-term smooth circulation.

sealing performanceSealing is achieved through the combination of imported rubber and corrosion-resistant copper alloy, combined with precise valve disc and seat fitting accuracy, to enhance sealing reliability.

（2） Technical parameters

Nominal pressure: 1.0-1.6MPa

Nominal diameter: DN65~200mm

Applicable temperature: -10 ° C to 120 ° C (depending on the sealing material, EPDM material can reach up to 120 ° C, NBR material is 82 ° C)

Applicable media: water and weakly corrosive fluids

Test standards: GB/T 13927, API 598

4、 Applicable scenarios

Widely used in fields such as water supply and drainage systems, fire protection pipelines, HVAC engineering, water treatment facilities, etc. Can be installed at the water pump outlet to reduce damage to equipment caused by backflow; It is also applicable to the bypass pipe of the inlet and outlet pipes of the reservoir to prevent the reverse flow of pool water into the water supply system.

5、 Key points for installation and maintenance

（1） Installation specifications

Install in the direction indicated by the valve body arrow, ensuring consistency with the flow direction of the medium, and prioritize installation in horizontal pipelines.

When connecting, it is necessary to ensure that the groove size matches, and large valves should be supported to avoid the weight of the pipeline acting on the valve body.

After installation, a pressure test is required to check the sealing and opening/closing flexibility of the connection.

（2） Maintenance and upkeep

Regularly check the wear and aging of rubber flaps, and replace them promptly if deformation or sealing failure is found.

Regularly clean the impurities and dirt inside the valve body to prevent them from affecting the accuracy of valve disc closure.

Regularly lubricate the rotating components such as the pin shaft, and take anti freezing measures in cold areas to avoid freezing and damage to the valve body.