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Dungong Valve (Shanghai) Co., Ltd.

Mobile phone: 13918861646

Telephone: 021-33656988

Mailbox: dungongvalve@163.com

Website: www.sh-dgvalve.com

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Address: No. 5118, Nanfeng Road, Fengxian District, Shanghai

QB2 double port exhaust valve

QB2 double port exhaust valve

  • category:Vent
  • Views:Times
  • Release date:2021-01-07 16:06:48
  • product description
  • Performance characteristics
  • technical parameter

QB2 double-port exhaust valve company Principle function:

        When the pipe starts to fill with water, the plug stays in the open position to perform a large amount of exhaust. When the air is exhausted, water accumulates in the valve and the floating ball is floated. The plug is driven to the closed position to stop a large amount of exhaust. During normal transportation, if a small amount of air accumulates in the valve to a considerable extent, the water level in the valve drops, and the float ball drops accordingly. At this time, the air is discharged from the small hole. When the pump stops, the water in the pipe is empty or negative pressure occurs in the pipe At this time, the plug quickly opens to suck in air to ensure that the pipeline is complete.

QB2 double port exhaust valve performance characteristics:

        ①It can eliminate the gas in the pipeline, reduce resistance and save energy;

        ②When the pipeline is under negative pressure, this product can quickly and automatically inhale air to prevent the pipeline from rupturing;

        ③Exhaust capacity is many times that of ordinary double-hole exhaust valve;

        ④The float bracket is made of stainless steel, with long service life, safety and reliability. ‍

Displacement per hour‍

specification

50

75

100

150

200

m3/h

4-173

85-352

14-597

22-904

27-114

 

Technical parameters of QB2 double-port exhaust valve:

Nominal diameter DN (mm)

50(2")~200(8")

Nominal pressure PN (Mpa)

1.0~1.6

Operating temperature (℃)

-10~85

Applicable medium

Shimizu

 

QB2 double-port exhaust valve component material:

Part Name

Material attributes

Valve body

Cast iron, cast steel, stainless steel

Float

stainless steel

 

Dimensions of QB2 double-port exhaust valve:

图片28.jpg 

Nominal diameter

D

D1

L

H

do

Z-Φ

50

160

125

345

315

75

4-14

80

195

160

345

315

75

4-14

100

215

180

345

315

75

4-18

150

280

240

475

380

90

8-23

200

335

245

475

420

90

8-23



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Contact us

Cell phone:13918861646

phone:021-33656988

URL:www.sh-dgvalve.com 

address:No. 5118, Nanfeng Road, Fengxian District, Shanghai

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