Qb2 Double Port Quick Exhaust Valve

• Type: Compound Exhaust Valve
• Material: Stainless Steel Cast Steel Brass
• Certification: RoHS, CE, ISO9001, TS16949, TUV, GS
• Transport Package: Wooden Box
• Specification: DN15-DN800
• Trademark: XC
• Model NO.: QB2
• Origin: China
• HS Code: 3917400000
• Production Capacity: 9999

Product Description

QB2 double-port exhaust valve is suitable for the working medium of water pipeline, in order to improve the efficiency of water transmission equipment and protect the pipeline from deformation and rupture, is the necessary equipment of the pipeline. It is used in the most store or the place with closed air and the outlet of the pump on the pipeline to remove the gas in the pipeline to dredge the pipeline and achieve normal work. If the exhaust valve is not installed, the pipeline will be blocked at any time, so that the water capacity of the pipeline can not meet the design requirements; Secondly, when the pipeline is in operation, the pump stop, power failure phenomenon will produce negative pressure to cause pipeline vibration or rupture, rapid exhaust valve can quickly breathe air into the pipe to prevent pipeline vibration or rupture.
Working principle
When the tube begins to fill with water, the plug head stays in the open position for a large amount of exhaust, when the air is discharged, water in the valve, float is floated, drive the plug head to the closed position, stop a large amount of exhaust, when the water in the tube is normally transported, if there is a small amount of air gathered in the valve to a considerable extent, the water level in the valve drops, the float drops, at this time the air is discharged by the small hole, when the pump stops, When the water flow in the tube is empty or when the negative pressure is generated in the tube, the plug head is quickly opened and the air is inhaled to ensure that the pipeline is complete.
Performance effect
In the operation of the pressure pipeline, the quick exhaust valve can automatically exclude a small amount of air precipitated from the water so as not to block the water. When the negative pressure occurs in the pipeline, the air can be quickly admitted, so as to avoid the instability and damage of the pipeline due to excessive negative pressure. When the pipeline is emptying, it can automatically take in a large amount of air to speed up the water release and shorten the water shutdown time.
Structural features
1, can eliminate the gas in the pipeline, reduce resistance, save energy.
2. When the pipeline is under negative pressure, this product can quickly and automatically inhale to prevent the pipeline from breaking.
3, float is stainless steel, long service life, safe and reliable.

Technical parameters

Product model :P2, QB2
Caliber range :DN40 ~ DN300
Pressure range :PN10

Dimension of external connection

 

Nominal diameter	Main dimensions (mm)
D	H	H1	L	Applicable media
40	145	355	215	370	water
50	160	355	215	370	water
80	195	360	225	430	water
100	215	360	225	430	water
150	280	380	230	510	water
200	335	430	320	680	water
300	390	540	360	825	water