Qhxf-89 All-Weather Fire Breathing Valve

• Media: Water
• Standard: Water Vapour Oil
• Certification: CCC, RoHS, ISO, CE
• Temperature: High Temperature
• Connection: Flange
• Valve Seat: Double-Seat
• Model NO.: QHXF-89
• Structure: Piston
• Material: Cast Iron
• Transport Package: Wooden Box
• Specification: DN15-DN800
• Trademark: XC
• Origin: China
• HS Code: 8421219990
• Production Capacity: 9999

Product Description

QHXF-89 all-weather fire breathing valve product overview:
The all-weather fire breathing valve is a ventilation device installed on the fixed top tank, which can reduce the evaporation loss of oil products, control the pressure of the storage tank and prevent the external flame from entering. The valve disc structure is air cushion type film valve disc.
Main features
The valve has the characteristics of large ventilation, small leakage, corrosion resistance, and electrostatic grounding line, so that the valve and the tank to maintain equal potential. The valve has antifreeze performance and is suitable for cold areas.
Main technical parameters
Operating pressure: Positive pressure: 353Pa(36mmH2O)
, 980Pa(100mmH20)
 Negative pressure :295Pa(30mmH2O)
QHXF-89 all-weather fire breathing valve structure size

Specification	Mounting dimensions (mm)
	H	L	D	D1	D2	n		d
						n1	n2	d1	d2
DN50	255	362	140	110	90	3	1	14	12
DN80	342	508	185	150	125	3	1	18	16
DN100	342	508	205	170	145	3	1	18	16
DN150	460	640	260	225	200	6	2	18	16
DN200	545	770	315	280	255	6	2	18	16
DN250	648	918	370	335	310	9	3	18	16

Product model
Model QHXF-89
Connection method
Flange
Way of construction
Baffle, piston
Drive mode
Manual
Product caliber
DN20-DN250
Nominal pressure
1.6 Mpa to 10.0 Mpa
Body material
Cast iron, cast steel, carbon steel, stainless steel