Low pressure angle globe valve

NegotiableUpdate on 12/31

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Overview

Overview of Low Pressure Angle Globe Valve: Low pressure angle globe valves belong to forced sealing valves, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak

Product Details

【Overview of Low Pressure Angle Globe Valve】
Low pressure angle globe valveIt belongs to a forced sealing valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the frictional force between the valve stem and the packing, as well as the thrust generated by the pressure of the medium. The force required to close the valve is greater than the force required to open it, so the diameter of the valve stem should be larger, otherwise the valve stem bending fault may occur.

【Performance range of low-pressure angle globe valve】

model	Nominal pressure	Test pressure			Working temperature (℃)	Applicable Medium
		Strength (water)	Sealed (water) air (MPa)	Low pressure sealed air (MPa)
J44W-16P(R)	1.6	2.4	1.8	0.6	≤200	NITRIC ACID
						Nitrates
J44W-25P(R)	2.5	3.8	2.8	0.6	≤200	ACETIC ACID
						Acetic acid
J44W-40P(R)	4.0	6.0	4.4	0.6	≤200	NITRIC ACID
						Nitrates

【Schematic diagram of low-pressure angle globe valve structure】

【Main component materials of low-pressure angle globe valve】

Part Name	material
Valve body, valve cover	Cf8、CF3、CF8M、CF3M
valve disc	304、304L、316、316L
valve stem	304、304L、316、316L
stem nut	Aluminum Iron Bronze
handwheel	Grey cast iron, malleable cast iron

【Main external dimensions of low-pressure angle globe valvePN1.6MPa】

DN	L	D	D1	D2	f	b	zxφd	Do	H1	H2
20	75	105	75	50	3	16	4X φ 14	90	188	205
25	80	115	85	53	3	16	4X φ 14	100	250	275
32	90	135	100	66	3	18	4X φ 18	120	275	303
40	100	145	110	70	3	18	4X φ 18	140	303	343
50	115	160	125	90	3	20	4X φ 18	160	310	350
65	145	180	145	117	3	20	4X φ 18	180	337	372
80	155	195	160	130	3	22	8X φ 18	220	425	490
100	175	215	180	150	3	24	8X φ 18	240	435	515
125	200	245	210	173	3	24	8X φ 18	280	500	585
150	240	280	240	200	3	24	12 x ° 23	320	554	640
200	300	335	295	248	3	27	12 x ° 23	400	718	868

【Precautions for installation of low-pressure angle globe valve】

1) The installation position, height, and import/export direction must meet the design requirements, and the connection should be firm and tight.
2) All types of manual valves installed on insulated pipelines must not have handles facing downwards.
3) Before installing the valve, a visual inspection must be conducted, and the valve nameplate should comply with the current national standard "General Valve Marking" GB 12220. For valves with a working pressure greater than 1.0 MPa and a shut-off function on the main pipeline, strength and tightness tests should be conducted before installation, and they can only be used after passing the tests. During the strength test, the test pressure shall be 1.5 times the nominal pressure, and the duration shall not be less than 5 minutes. The valve shell and packing shall be qualified if there is no leakage. During the tightness test, the test pressure is 1.1 times the nominal pressure; The test pressure should meet the requirements of GB 50243 standard for the duration of the test, and it is considered qualified if there is no leakage on the sealing surface of the valve disc.

Ordering Notice:

1、 ①Low pressure angle globe valveProduct Name and Model ②Low pressure angle globe valveIs the low-pressure angle globe valve with caliber ③ equipped with accessories so that we can correctly select it for you.

2、 If already selected by the design unitPositive steel valvePlease order the low-pressure angle globe valve model directly from our sales department.

3、 When the usage situation is very important or the environment is complex, please provide design drawings and detailed parameters as much as possible, and our steel valve experts will review and control them for you.