Corrosion Resistant Ammonia Globe Valve (GAJ41B)

• Customization: Available
• Media: Wog
• Temperature: High Temperature
• Model NO.: GAJ41B
• Type: Straight-through
• Material: Alloy Steel Wc6, Wc9
• Connection Form: Flange
• Pressure: High Temperature
• Actuator: Manual
• Seal Surface: Metal Sealing
• Thread Position of Valve Rod: OS&Y
• Usage: Regulation
• Application: Industrial Usage
• Transport Package: Plywood Case
• Trademark: GOOLE, OEM, ODM
• Origin: China(Mainland)
• HS Code: 8481804090

Product Description

Corrosion Resistant Ammonia Globe Valve(GAJ41B)

Product Description

Ammonia globe valve often require gases such as oxygen, nitrogen, hydrogen, argon, etc. These gases are usually stored in dedicated high-pressure gases. When in use, the gas pressure is reduced to the required range for the experiment through an ammonia globe valve, and then finely adjusted through other control valves to input the gas into the system. The most commonly used pressure reducing valve is the ammonia globe valve, abbreviated as ammonia valve.

Working Principle

The high-pressure chamber of the ammonia valve is connected to the steel cylinder, while the low-pressure chamber serves as the gas outlet and leads to the usage system. The reading of the high-pressure gauge is the pressure of the gas stored in the steel cylinder. The outlet pressure of the low-pressure gauge can be controlled by adjusting the screw.
When using, first turn on the main switch of the steel cylinder, then rotate the pressure regulating screw of the low-pressure gauge clockwise to compress the main spring and drive the film, spring pad, and top rod to open the valve. The high-pressure gas imported in this way enters the low-pressure chamber through throttling and pressure reduction, and is then directed to the working system through the outlet. Rotate the adjusting screw to change the height of the valve opening, thereby adjusting the flow rate of high-pressure gas and achieving the desired pressure value.
Ammonia shut-off valves are equipped with safety valves. It is a device that protects the ammonia pressure reducing valve and ensures its safe use, as well as a signal device for the malfunction of the ammonia pressure reducing valve. If the outlet pressure rises on its own and exceeds a certain allowable value due to valve gasket, valve damage, or other reasons, the safety valve will automatically open for exhaust.

Application

(1) There are many specifications of ammonia globe valve according to different usage requirements. The maximum import pressure is mostly, and the minimum import pressure is not less than 2.5 times the export pressure. There are many specifications for export pressure, generally, with a maximum export pressure of.
(2) When installing ammonia globe valve, it should be determined whether their connection specifications are consistent with the joints of the system being used. The ammonia shut-off valve adopts a hemispherical connection, and the two are fully matched by tightening the nut. Therefore, both hemispheres should be kept smooth during use to ensure good airtightness. Before installation, high-pressure gas can be used to blow away dust. If necessary, materials such as polytetrafluoroethylene can also be used as gaskets.
(3) Ammonia globe valve should be strictly prohibited from coming into contact with grease to avoid fire accidents.
(4) When stopping work, the residual air in the pressure reducing valve should be released completely, and then the adjusting screw should be loosened to prevent the elastic element from being deformed under long-term pressure.
(5) Ammonia globe valve should avoid impact and vibration, and should not come into contact with corrosive substances.
The usage method and precautions of these ammonia globe valve are basically the same as those of ammonia globe valve. However, it should also be pointed out that specialized ammonia valves are generally not used for other gases. To prevent misuse, some ammonia valves use special connection ports between them and steel cylinders. For example, both hydrogen and propane use left threaded threads, also known as reverse threads, and special attention should be paid during installation.

Product Parameters

 

DN	L	α	H	DO	PNl.6/MPa		PN2.5/MPa
					D	D1	D	D1
50	250	37^o30'	334	250	58	50	64	4g
65	270	37^o30'	439	250	75	65	82	67
80	280	37^o30'	495	300	91	79	95	77
100	300	37^o30'	575	350	11O	97	117	101
125	325	37^o30'	587	350	136	121	144	126
150	350	37^o30'	607	350	163	146	172	158
200	400	37^o30'	740	400	223	202	223	202
250	450	37^o30'	863	400	278	254	278	254
300	500	37^o30'	990	400	330	305	330	305
350	550	37^o30'	1137	500	382	352	382	352
400	600	37^o30'	1523	500	432	399	432	39g
450	650	37^o30'	1618	600	485	451	485	451
500	700	37^o30'	1657	600	535	501	535	499
600	800	37^o30'	1746	700	636	601	636	599

 

DN	L	D	α	PN4.0MPa			PN6.4/MPa			PN10.0MPa
				D1	H	D0	D1	H	DO	D1	H	D0
50	250	64	37^o30'	49	345	300	50	350	300	49	350	300
65	270	83	37^o30'	67	441	300	66	447	300	64	447	300
80	280	96	37^o30'	79	495	350	77	499	350	75	499	350
100	300	117	37^o30'	101	575	350	99	582	400	87	582	400
125	325	144	37^o30'	126	587	400	129	590	400	125	590	400
150	350	172	37^o30'	152	607	400	150	611	450	145	611	450
200	400	223	37^o30'	200	740	450	198	745	550	190	747	550
250	450	278	37^o30'	252	863	550	246	867	650	236	869	650
300	500	330	37^o30'	302	1008	650	294	1008	750	282	1013	750
350	550	382	37^o30'	350	1142	750	342	1148	800	334	1148	850
400	650	432	37^o30'	397	1527	850	387	1531	900	377	1533	950

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