Hu took over with a double suction valve-type HXF-II

Hu took over with a double suction valve-type HXF-II

Product description:

The amount of wear: 0.1 Crashworthiness strength: 0.6-2.5 (MPa) Pipe thickness: 25-300 (mm)
Friction coefficient: 0.1 For fluid: petroleum, chemical, pharmaceutical, energy and other industries Custom processing:
Material: carbon steel, stainless steel Pipe diameter: 25-300 (mm) Model: HXF-II type
Brand: Beijing Jing Chen Operating temperature range: -40 ~ 450 (℃)

According to national standards (fire protection design of petrochemical enterprise) ( GB50160-92 ) Provisions: Store A, B liquid fixed roof tanks, flame arrester should be located and Hu suction valve.

? Visible Hu suction valve, flame arrester tank is not lack of safety facilities.

? It can not only maintain the pressure balance tank to ensure the tank from damage when the overpressure or vacuum, and can reduce evaporation and loss of the tank medium.

? I produced Hu suction valve, with a compact, ventilation volume, leakage, good sealing performance characteristics.

? Recently we developed an internationally advanced level of explosion-proof flame arrester Hu suction valve ( HXF-IZ Type), flame arrester located Hu suction valve suction port, the complete elimination of ignition sources to enter Hu suction valve housing having a small size, light weight, maintenance, cleaning, easy replacement

Technical Parameters Size mm
Model Specifications HXF-II HXF-IIZ caliberLH
Housing Material WCB L2 304 316L DN25--
Fire retardant core member 304 316L DN32--
Disc material 304 316L L2 PTFE DN40--
Gasket NER PTFE DN50320350
Explosion levels BS: 5501 IIA IIB IIC DN80450500
Operating Pressure + 1000mmH 2 O ~ -30mmH 2 O DN100450500
Ambient temperature +450 OC~-30 OC DN150620600
Connection Type Welded flange thread DN200750700
Flange Standard GB HG SH JB ANSI JIS DIN DN250850820
Manufacturing Standards GB5908-86 SY7511-87 DN300--

Installation Notes:
Hu suction valve should be installed at the highest point of the tank gas supply in order to reduce evaporation losses and provide access to materials Hu smoothly most direct suction valve and the largest channel, usually for vertical tank, Hu suction valve should be installed in the tank top within the scope of the central roof, you need to set up storage tanks for roof insulation can be installed in the vicinity of the ladder platform.

Hu suction valve at the factory, I Division in the flange surface of the increase with a dust cover, be sure to install the dust cover removed. Hu suction loading and unloading valves must be vertically upwards, can not upside down or horizontally. When you need to install Hu when two suction valves, tank top center they should be symmetrical arrangement.

Repair and maintenance:
To (fire retardant) Hu suction valve safe, should be removed periodically corrugated flame arrester layer after installation within three to six months, to clean, to ensure the smooth flow of each hole on the fire resistant layer, to prevent clogging, ensure the safety of normal use Regularly check the vents positive and negative actions are flexible valve disc, stem and valve disc contacts the sealing surface for damage, if damaged should be immediately replaced. In the inspection and maintenance to reinstall, you should ensure that all joint surface within the valve tight fit, flexible valve disk lift.