详情
Product characteristics:
Breathing valve is fixed at the top of tank ventilation devices to
ensure that the tank pressure normal. Tank prevents overpressure or
vacuum tank so that suffered damage, but also to reduce the loss of
volatile liquid storage tank.
According to the "Petrochemical design of fire safety regulations"
(GB*******2) states : "A B liquid fixed roof tanks, should be
established and the two semi-breathing valve, "Hichine company
developed HB-type series of new products, complete with
specifications, compact, light weight, the ventilation, leaking
small advantages. Products are called single valve, single-suction
valve, breathing valve structures can form combinations with fire
retardant structure, also preparation for the takeover
Working media:
Gasoline, kerosene, diesel oil, aromatics, sulfur, air, oil or
other chemical materials. Selection of fire retardant under the
category "HGJ****9".
Operating pressure and the use of ambient temperature:
Expiratory pressure: B, C ***0Pa, ****0Pa D, E *4KPa,
**8KPa
Suction pressure: B, C ***5Pa, ***5Pa D, *0.5KPa
(Operation pressure indicators can be specified by the user)
Environmental temperature: **2℉ ***0℉
HB1breathing valve
DN*****0 HAB1Flame-breathing valve
DN*****0
DN *0 *0
**0 **0 **0
**0 **0 **0
H **0 **0
**0 **0 **0
**0 **0 **0
**0 **0
**0 **0 **0
**0 **0 ***0
L **0 **0
**0 **0 **0
***0 ***0
***0
HB2With punctuated with Double-breathing valve
takeover
DN*****0 HAB2with Double-breathing
valve
take over fire retardant
DN*****0
DN *0 *0
**0 **0 **0
**0
H **0 **0
**0 **0 **0
**0
**0 **0
**0 **0 **0
**0
H1 **0 **0
**0 **0 **0
**0
**0 **0
**0 **0 **0
**0
L **0 **0
**0 **0 **0
**0
HB3 band receiver respiratory inhalation
valve
DN*****0 HAB3 Belt respiratory inhalation
valve
take over fire retardant
DN*****0
DN *0 *0
**0 **0 **0
**0
H **0 **0
**0 **0 **0
**0
**0 **0
**0 **0 **0
**0
H1 **0 **0
**0 **0 **0
**0
**0 **0
**0 **0 **0
**0
L **0 **0
**0 **5 **0
**0
HB4 band receiver exhaled breath valve
DN*****0 HAB4 Belt exhaled breath valve
take over fire retardant
DN*****0
