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GFQ-11 All-weather Respiration Valve

Product overview

Product model: GFQ-11
Nominal diameter: DN25~250mm (1"~10")
Operating temperature: -30~60℃
Main material: carbon steel WCB, stainless steel 304, 316, aluminum alloy
Application scope: gasoline, stupid, stupid, kerosene, light diesel oil, oil, crude oil and other oil products and chemical products with the same nature tank
Connection type: flange connection (II) internal thread connection (III) external thread connection (IV)
Design standard: GB5908-86, GB1347-92
Flange standard: HG 20592-97, ANSI B 1.6, GB HGJ SH JB

GFQ-11 All-weather Respiration Valve product details

GFQ-11 All-weather Respiration Valve Scope of application
GFQ-11 All-weather Respiration Valve produced and sold by Baigang valve group is suitable for storing Class A oil with flash point D at 28 ℃ and class B oil with flash point D at 60 ℃, such as gasoline, stupid, stupid, kerosene, light diesel oil, engine oil, crude oil, etc. Oil products and properties of the same chemical storage tanks. Can be used with the new corrugated flame arrester.

GFQ-11 All-weather Respiration Valve instructions for use
Breathing valve installed in the top of the tank, is to solve the positive pressure tank, negative pressure gas, the tank of liquid access is not hindered, when the external liquid into the tank when a large number of gas out call (called positive pressure) . If the tank liquid output when the tank must be drawn into the tank from the outside air (called negative pressure). Stop breathing when the valve is automatically closed will not leak the liquid gas tank, so that the liquid inside the tank has been a good guarantee.

GFQ-11 All-weather Respiration Valve maintenance and servicing
For the safety of the breathing valve, check whether the guide rod and the valve plate are flexible before use. This valve should be regularly (within 6 months) check the positive and negative valve disc is flexible, valve disc contact surface for damage, if damaged should be overhaul immediately. After maintenance, everything is normal and can be reused.

GFQ-11 All-weather Respiration Valve main technical parameters

aJ positive pressure	355pa (36mm water column)
Negative pressure	295pa (30mm water column)
b-level pressure	980pa (100mm water column)
Negative pressure	295pa (30mm water column)
c-class pressure	1765pa (180mm water column)
Negative pressure	295pa (30mm water column)

GFQ-11 All-weather Respiration Valve Parts and materials

Body material	Carbon steel wcb, stainless steel 304,316, aluminum
Positive pressure valve disc material	Stainless steel 304,316, aluminum alloy
Negative pressure valve disc material	Stainless steel 304,316, PTFE ptfe
Ambient temperature ℃	-30 ~ 60

GFQ-11 All-weather Respiration Valve GB flange connection Dimensions: gb, jb

specification	Installation size (mm)
specification	d1	d	d3	h	mh
dn25	70	100	115	180	4 × 10
dn50	110	140	160	255	4 × 12
dn80	150	185	213	260	4 × 16
dn100	170	205	265	290	4 × 16
dn150	225	260	305	330	8 × 16
dn200	280	315	355	350	8 × 16
dn250	335	370	420	400	12 × 16

GFQ-11 All-weather Respiration Valve API flange connection Dimensions: ansi, api, asme for jis standard

specification	Installation size (mm)
specification	d1	d	d3	h	mh
1"	79.5	108	115	180	4 × 15
2"	120.5	152	160	255	4 × 19
3 "	152.5	190	213	260	4 × 19
4 "	190.5	229	265	290	8 × 19
6 "	241.5	254	305	330	8 × 22
8"	298.5	343	355	350	8 × 22
10 "	362	406	420	400	12 × 25

Reminder:

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