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Special pressure reducing valve YQA-441, ammonia pressure reducer, ammonia pipeline pressure reducing valve for liquid ammonia bottle

Inlet connecting thread

price:USD$850.00
discount 70% in 2018-09-19 to 2018-09-21
price: USD$ 595.00
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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Ammonia pressure reducing valveA pressure reducing device for bottled gas. When the inlet pressure and outlet flow change, ensure that the outlet pressure remains stable. Readings of low gauge readings may indicate potential risks and pitfalls. Does the operator know the scope of the machine?. Have you read the instructions carefully?. Is it against the operating rules?. Are the purchased products qualified?. Is there a technical support hotline on the instructions?. If the ambient temperature is very low, it is necessary to check whether the valve has freezing or ice jam.
 Function and classification of A ammonia pressure reducing valveDue to high pressure cylinders, and welding and gas cutting and using the required pressure is smaller, so it is necessary to use the valve to the high pressure gas in the cylinder storage was reduced to a low pressure gas, and should ensure that the working pressure required to maintain a steady state from first to last. In short, the pressure reducing valve is to reduce the high-pressure gas to low pressure gas, and maintain the output gas pressure and flow stability of the adjustment device.

Ammonia pressure reducing valve can be divided into two types of centralized and post type; according to the structure can be divided into single-stage and two-stage two categories; according to the principle of work can be divided into two types of positive action and reaction type. At present, the common domestic pressure reducing valve is mainly composed of two types: single-stage reaction and two-stage mixing (the first stage is positive action, and the second stage is reaction type).

 B, ammonia pressure reducing valveThe structure and working principle The main body of the 1.441 ammonia pressure reducing valve is made of stainless steel. The structure of the two stage decompression system is basically similar, which is composed of valve ejector rod, pressure regulating spring, elastic film device, pressure reducing door and other parts. The first stage pressure reduction system is mainly used to automatically reduce the high-pressure gas to medium pressure gas, drop to the pressure of 2MPa, and then send it to the second stage pressure reducing system. In the two stage pressure reducing system, when the screw is adjusted, the pressure reducing valve is opened and closed in different degrees by adjusting the pressure spring, the elastic film and the valve ejector rod, so as to adjust the decompression degree of the first decompression system to send oxygen or stop the gas supply.

2. ammonia pressure reducing valve inlet joint thread size is G1/2, the inner diameter of the joint is 5.5mm, the inner diameter of the air outlet is 6mm, and the maximum flow is 15m3/h. The pressure reducing valve body is also equipped with a high pressure ammonia meter and a low pressure ammonia meter, indicating the pressure in the high pressure air chamber (that is, the ammonia bottle) and the low pressure chamber (namely the working pressure). The range of high pressure ammonia meter is 6MPa, and the range of low pressure ammonia meter is 0-1MPa

C,Ammonia pressure reducing valveSafe use(1) the operation of the ammonia cylinder must be slow when it releases or opens the pressure reducing valve. If the valve is opened too fast, part of gas valves work due to adiabatic compression and temperature is greatly improved, this is likely to make the organic material parts such as rubber filler, rubber film fiber gasket is damaged, due to excessive outgassing produced by electrostatic spark and valve oil, can cause burning burn decompression valve parts.(2) the valve before installation and open the cylinder valve note: before installing the valve, open the valve of the oxygen bottle, blowing dirt, to prevent dust and moisture into the valve. When opening the cylinder valve, the outlet of the bottle valve shall not be aligned with the operator or others, so as to prevent the sudden burst of high pressure gas. The valve outlet gas and rubber pipe joint must be annealed wire or screw clamp; to prevent danger from aspiration after.(3) note the valve unloading and work: loading and unloading valve must be taken to prevent the pipe joint thread tooth to spin unstable injection. In the process of work, we must pay attention to observe the pressure value of the work pressure gauge. When you stop working, you should loosen the pressure regulating screw of the pressure reducing valve first, then turn off the ammonia bottle valve, and release the gas in the pressure reducing valve slowly, so that the spring and the decompression valve can be protected from damage. At the end of the work, the pressure relief valve should be removed from the cylinder to be properly preserved.

(4) the pressure reducing valve must be repaired regularly, and the pressure gauge must be checked regularly. This is done to ensure the reliability of the pressure regulation and the accuracy of the reading of the pressure gauge. The valve leakage phenomenon, such as pressure hand action is found in the use of timely maintenance.(5) the treatment of pressure reducing valve freezing. If the pressure relief valve is frozen in use, it must be thawed by hot water or steam, and never burn with flame or red iron. The valve is heated, the residual moisture must be blown off.(6) the pressure relief valve must be kept clean. Pressure valve shall not be contaminated with grease, dirt, such as grease, must be wiped clean before use.(7) all kinds of gas pressure reducing valves and pressure gauges shall not be exchanged, such as the pressure relief valves used for oxygen can not be used in acetylene, petroleum gas and other systems

Technical parameters of D, YQA-441 ammonia pressure reducing valveModel: YQA-441/YQA-401

Measurement range 0-6 (MPa)
Suitable medium ammonia gas
Rated outlet pressure 0-0.4 (MPa) adjustable
Rated flow 15 (m3/h) ambient temperature 40 (centigrade material); all stainless steel
Import connection thread: liquid ammonia cylinder dedicated 1/2 interface, outlet connection form: easy to insert oxygen tube
Scope of application of ammonia pressure reducing valve
The product is a pressure reducing device which can adjust the high pressure gas in the cylinder to the practical pressure for the use of the gas cylinder. It is mainly used in welding, cutting and chemical industry, medicine and health, electronic industry and so on. The product can ensure stable output pressure regardless of the input pressure and the output flow.
Main technical data of common pressure reducing valve

Name
Model
Rated input pressure (P1)
Rated output pressure (P2)
Rated flow Q
Inlet connecting thread
Outlet connection thread
MPa
M3/h
Oxygen pressure reducing valve
YQY-07
15
1.25
40
G5/8"
M16×1.5
Acetylene pressure reducing valve
YQE-03
1.6
0.15
5
The rolling orchid
M16 x 1.5 (left)
Argon pressure reducing valve
YQAr-731L
15
0.15
0-15
G5/8"
M12×1
Propane pressure reducing valve
YQW-02
1.6
0.08
1.5
M22 x 1.5 (left)
M16 x 1.5 (left)
Carbon dioxide pressure reducing valve
YQT-341
15
0.6
10
G5/8"
M16×1.5
Oxygen pressure reducing valve
YQY-342
15
0.6
40
G5/8"
M16×1.5
Ammonia pressure reducing valve
YQA-411
3
0.4
15
G1/2"
M16×1.5