Qb2 flange double port exhaust valve

Short Description:

Qb2 flange double port exhaust valve is applicable to the pipeline with water as the working medium. It is used as the equipment for removing gas in the pipeline, so as to improve the efficiency of the water conveying equipment and protect the normal operation of the pipeline. In case of power failure, there will be pressure in the pipe when the pump is stopped, which will cause pipeline vibration or rupture. The exhaust valve will inhale with time to ensure the safety of the pipeline. The double port exhaust valve is widely used in municipal construction, irrigation and water conservancy, thermal power generation, petrochemical, metallurgy and mining, fire protection, food, shipping, medicine, textile and other fields.

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Product features of qb2 flange double port exhaust valve

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

2. When the pipeline is under negative pressure, the product can quickly and automatically inhale air to prevent pipe rupture;

3. The exhaust capacity is many times that of the common double hole exhaust valve;

4. The floating ball bracket is made of stainless steel, with long service life, safe and reliable;

Technical parameters of qb2 flange double port exhaust valve

Applicable media	Applicable temperature	Strength test (water) MPa	Sealing test (water) MPa	body material	Floating ball bracket
clean water	0~80℃	1.5	0.05~1.1	cast iron	stainless steel

Qb2 flange double port exhaust valve drawing

Main connection dimensions

model	Nominal diameter	Main dimensions（mm）
model	Nominal diameter	D	D1	D2	L	Z-Φd
QB2-10	40	145	110	85	430	4-Φ18
	50	160	125	100	430	4-Φ18
	75	195	160	135	470	4-Φ18
	100	215	180	155	500	4-Φ18
	150	280	240	210	540	8-Φ20
	200	335	295	265	700	8-Φ20