NEWS

Contact Information

Telephone:+86-371-63686248
Fax:+86-371-63686248
Mailbox:13703820603@139.com
Address: No. 22, Huainan Street, Erqi District, Zhengzhou City

Information Details


Characteristics of open pneumatic flapper valve and what matters should be paid attention

2018-07-03

What matters should be paid attention to when using open pneumatic flapper valve? Henan upper valve co., ltd. has drawn from many years of production experience that the open pneumatic flapper valve is light in weight and easy to maintain. the sealing rubber ring of the flapper valve is convenient to replace. the maintenance, inspection, replacement and valve maintenance of the electro-hydraulic device do not affect the normal operation of the valve. Open pneumatic flapper valve opening and closing inspection than closed flapper valve convenient, fast.

What matters should be paid attention to when using open pneumatic flapper valve

1. The shell test and sealing test medium of the flapper valve is water (including preservative), kerosene or other suitable liquid with viscosity not greater than water.

2. The sealing pair is a non-metal sealed plug-in valve. The test and requirements of the sealed shell shall be in accordance with the provisions of GB/T13927-92 D.

3. The sealing pair is a metal-sealed flapper valve. If there is a sealing performance requirement, the leakage of the sealing test shall be calculated according to 1 ×DNmm/s. If there is no sealing performance requirement, this test shall not be done.

4. For the flashboard valve driven by electric, hydraulic and pneumatic devices, after the closing position is set, close it for 3 times and carry out shell and sealing tests according to the requirements of 1 and 3.

5. The cleanness of the plate valve shall be cleaned as required.

6. Static pressure life test.

7. The number of static pressure life tests of the plug-in valve shall be in accordance with the regulations, and other technologies shall be in accordance with the provisions of JB/Z 234.

Open pneumatic flapper valve is mainly used in building materials, metallurgy, mining, electric power, chemical industry, glass, light industry, food and other industries, the top of the library, the bottom of the library and import and export. It is an ideal device that controls large changes in flow, starts frequently, and cuts off quickly.

The company mainly produces gas butterfly valve, blind valve, ash ball valve, half ball valve, flange butterfly valve, wafer butterfly valve, multi-level butterfly valve, soft sealing butterfly valve.

Henan Valve Co., Ltd. has a long history of valve production, complete qualifications, has its own more than a dozen patented products, mature technology, rich experience, is a good partner of valve users. on the valve valve co., ltd welcome new customers to negotiate, buy.