Breathing valve - DN50-400 Specificaton & Trade Terms
| Model | DN50-400 |
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| Place Of Origin | Beijing |
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| Packaging | wooden box |
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| Brand | Hichine |
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| Certifications | ISO 9001 |
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| Price Term | FOB |
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| Payment Term | T/T |
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| Supply Ability | 100pieces/day |
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| Minimum Order | 1 |
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| Delivery Time | 10days |
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Product characteristics :
Breathing valve is fixed at the top of tank ventilation devices to ensure that the tank pressure normal. It prevents overpressure or vacuum so that tank won’t be damaged, and also reduces the loss of volatile liquid storage.
According to the "Petrochemical design of fire safety regulations" (GB50160-92) states : "A B liquid fixed roof tanks, should be established with two semi-breathing valve, "Hichine company developed HB-type series of new products, complete with specifications, compact, light weight, the ventilation, small leaking 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 "HGJ21-89".
Operating pressure and the use of ambient temperature:
Expiratory pressure : B, C +980Pa, +1750Pa D, E +4KPa, +18KPa
Suction pressure : B, C -295Pa, -295Pa D, -0.5KPa
(Operation pressure indicators can be specified by the user)
environmental temperature : -30 ° C -60 ° C
DN 50 80 100 150 200 250 300 400
H 280 430 430 530 630 740 820 940
350 500 500 600 700 820 900 1020
L 300 450 450 650***0 1250
DN 50 80 100 150 200 250
H 280 430 430 530 630 740
350 500 500 600 700 820
H1 110 180 180 220 260 320
180 250 250 290 330 400
L 320 450 450 620 750 850
DN 50 80 100 150 200 250
H 280 430 430 530 630 740
350 500 500 600 700 820
H1 110 180 180 220 260 320
180 250 250 290 330 400
L 310 450 450 635 800 950
