Sfa-22c150t refrigeration safety valve

  I
use of safety valve sfa22c300t refrigeration safety valve is used in refrigeration equipment as an overpressure protection device
When the operating pressure of the equipment rises beyond the allowable value, the valve can automatically open, and discharge a certain amount of medium according to the equipment operation requirements, so as to prevent the equipment pressure from rising continuously and protect the whole system
The sfa-22c300t and sfa-22c150t safety valve series are overpressure protection devices for chiller condensers and evaporators
The product test and performance meet the requirements of American ANSI B16
34, ansi/ashrae15-78 and Chinese gb12241 ~ 12243 and other relevant standards
Shanghai Gangao Valve Co
, Ltd
 
II performance parameter

model	LDA-22C150T	LDA-22C300T
pressure level	150psi	300psi
nominal diameter	1/2” 、 1”	1/2”、 3/4”、 1”
strength test pressure	3MPa	7 5MPa
discharge pressure	≤ 1 1 times the set pressure
sealing pressure	≥ 0 85 times the set pressure
tightness	no leakage after 2 minutes of pneumatic test
applicable temperature	-40℃～150℃
applicable media	freon and refrigerant oils such as R12, R22 and R500

III Component materials   Shanghai Gangao Valve Co
, Ltd

SN	part name	material
1	valve body	HPb59-1/H62
2	disc	HPb59-1/H62
3	sealing ring	F-4
4	spring	50crva+ nickel plating
5	adjusting nut	HPb59-1/H62
6	gasket	T3
7	nut	HPb59-1/H62

 
III summary
Safety valve is an important safety accessory of boiler, pressure vessel and other pressure equipment
Its action reliability and performance are directly related to equipment and personal safety, and are closely related to energy conservation and environmental protection
Some users and design departments always choose the wrong model when selecting the model
Therefore, this paper analyzes the selection of safety valve

IV effect
The safety valve plays a role of safety protection in the system
When the system pressure exceeds the specified value, the safety valve is opened to discharge part of the gas / fluid in the system into the atmosphere / pipeline, so that the system pressure does not exceed the allowable value, so as to ensure that the system will not have accidents due to excessive pressure
Shanghai Gangao Valve Co
, Ltd
 
Key words: refrigerator safety valve brass safety valve refrigerant safety valve sfa22c300t refrigeration safety valve manufacturer