Village roads damaged valve to gas leakage

Yesterday morning at 9 o 'clock, daxing district zaoyuan village residents and the surrounding neighborhoods has experienced a false alarm.Originally, is gas leakage happened in the construction site near the village square, some residents were evacuated, emergency closed around the elementary school, thankfully, the scene quickly under control and processing.
Jujube jujube village is located in the subway line 4 station northwest edge.Journalists arrived, squares and fitness between garden has pulled the cordon, the ground has a diameter of about one or two meters of the holes, the workers and the excavator is working.
The reporter understands, around eight o 'clock yesterday morning, residents near the pit smelled a smell of abnormal, before here is building a road, convenient zaoyuan primary school students and parents from the north side of pass in and out.So some suspect, may be road construction in buried gas pipeline leak.
News is reflected in the residents' committees, the staff quickly get in touch with gas, construction.Then, property management, police, fire, gas sector have arrived at the scene, the firemen hose ready for a rainy day.Considering the safety of nearby residents, residents' committees sent notice the holes around a few hundreds of residents in the building, will they evacuated.Zaoyuan primary school also temporary decided to listening to lectures, notify the parents to children away.
Fortunately, not as bad as fuel gas, property management department closed gate, smell fades.At noon, the residents have returned home.According to the staff of the residents' committees, the cause of the accident is the construction personnel touch is broken when working in a gas valve, lead to gas leakage fault has repair, then backfill earthwork, is expected soon to restore gas supply.

(source:http://www.kg-machinery.com/news/valve.html)

Bibcock quality worrying

On April 20, xian city pledges inspect bureau to 20 batches bibcock product sampling, 4 batches were unqualified products, mainly for the pipe thread precision inflow parts strength performance is not up to standard.Pipe thread precision unqualified causes bibcock with water supply pipe connection is not tight or unable to connect, cause leakage or not normal use;Water parts strength unqualified cause LouDi water, or even shell burst.
Since 2015, sampling, bibcock by repeated exposure.Released on March 30th, the guangzhou city administration for industry and commerce of the "guangzhou city industrial and commercial bureau 2014 circulation bibcock commodity consumption hints ", a total of 35 samples, there are 15 samples were judged to be unqualified, the main problem for the salt spray test project unqualified project is unqualified, sample flow and body strength and sealing performance is unqualified project.
On February 9, in jiangxi province pledges inspect bureau released the 2014 and 4 quarter of product quality supervision and spot checks at the provincial level.Selectived examination of 20 batches ceramic chip seal the lid, there are 7 batches unqualified product quality.The main problem is the acidic salt fog test, body strength indicators do not meet the requirement.
The new national standard GB 18145-18145 the ceramic chip seal the lid were published on May 6, 2014, on December 1, 2014 formally implemented.The new national standard has been almost five months, why haven't improve stopcock quality problem?The personage inside course of study thinks, some low price is no guarantee the stopcock products still have the market, irresponsible enterprises with substandard materials, lead to tap the market is still jumbly.

(source:http://www.kg-machinery.com/news/bibcock-quality-worrying.html)

Range hood check valve

The "check valve", also called "butterfly-valve", function is to allow air to one-way flow. Check valve is located in smoke lampblack machine turbofan (motor), before entering the exhaust duct, is wary of outdoor blowing winds, due to the instantaneous pressure difference between inside and outside, let outdoor air be "sucked" into the room. In theory, however, is "check valve", in a common case, it can only be "reduced valve" and not "check". Now a lot of people who live in multi-storey apartment buildings all complaints in their interior smell of other dishes.Reason is that at the bottom of the kitchen lampblack machine to lampblack to the vertical exhaust hole, because most of the building design and useless to the shaft caused "negative pressure", so the soot in the shaft up downstairs "squeeze", on the way will leak into other floors lampblack machine exhaust pipe.Because of the check valve can't be 100% sealing, the smoke nature can seep into the house.

(source:http://www.kg-machinery.com/news/range-hood-check-valve.html)