High-Pressure Swing Check Valve

The oxygen specific shut-off valve is made of high-quality silicon brass or stainless steel casting, which has the advantages of high mechanical strength, wear resistance, and good safety. Used on oxygen pipelines, it has effective explosion-proof and flame-retardant properties, eliminating unsafe factors on oxygen pipelines.

Key words:

Classification:

Check Valve Series

Keyword： High-Pressure Swing Check Valve

E-mail:

liangbovalve@163.com

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Details

[Product Applications]

The H44H and H44Y type PN16–PN250 swing check valves made of steel are suitable for pipelines in various industrial applications—such as petroleum, chemical, pharmaceutical, fertilizer, and power industries—operating under pressures ranging from 1.6 to 25 MPa and temperatures between -29°C and +550°C. They are designed to handle a wide range of media, including water, oil products, steam, and even corrosive acidic substances.

[Product Features]

The H44H and H44Y swing-type steel check valves automatically open and close based on the force generated by the flow of the medium within the pipeline—they are classified as automatic valves. Check valves are essential components in piping systems, primarily designed to prevent backflow of the medium, safeguard pumps and their drive motors from reversing, and protect against unintended release of media from connected vessels. Additionally, these valves can also be used in auxiliary systems where pressure may rise above that of the main system, ensuring proper supply to such circuits.

[Performance Parameters]

Model		H44H-16C~250	H44W-16P~250
Working pressure (MPa)		1.6–25
Applicable Temperature (°C)		≤425	≤550
Applicable Medium		Water, steam, and oil products	Weakly corrosive medium
Materials	Valve body, valve bonnet, valve disc	Carbon steel	Chromium-nickel-titanium stainless steel
	Sealing surface	Carbon steel overlay welding iron-based alloy	Body Sealing

Main external dimensions and connection sizes

Nominal Diameter DN	Main external dimensions and connection dimensions
Nominal Diameter DN	L	D	D1	D2	b	Z-d	H
H44H-16C, H44W-16C, H44W-16P, H44W-16R, H44W-16I
25	160	115	85	65	16	4-14	100
32	180	135	100	78	16	4-18	105
40	200	145	100	85	16	4-18	115
50	230	160	125	100	16	4-18	135
65	290	180	145	120	18	4-18	142
80	310	195	160	135	20	8-18	165
100	350	215	180	155	20	8-18	180
125	400	245	210	185	22	8-18	210
150	480	280	240	210	24	8-23	233
200	500	335	295	265	26	12-23	304
250	550	405	355	320	30	12-25	348
300	650	460	410	375	30	12-25	390
350	750	520	470	435	34	16-25	430
400	850	580	525	485	36	16-30	468
H44H-25, H44W-25, H44W-25P, H44W-25R, H44W-25I
25	160	115	85	65	16	4-14	100
32	180	135	100	78	16	4-18	105
40	200	145	110	85	16	4-18	115
50	230	160	125	100	20	4-18	160
65	290	180	145	120	22	8-18	175
80	310	195	160	135	22	8-18	185
100	350	230	190	160	24	8-23	220
125	400	270	220	188	28	8-25	248
150	480	300	250	218	30	8-25	276
200	550	360	310	278	34	12-25	350
250	650	425	370	332	36	12-30	410
300	750	485	430	390	40	16-30	430
350	850	550	490	448	44	16-34	518
400	950	610	550	505	48	16-34	560