Cast steel check valve

Technical Parameters

Size Range: DN15～DN600
Temperature Range: -25～450℃
Body Materials: Carbon steel
Bonnet material: Carbon steel
Disc material: Carbon steel
Stem material: Stainless steel
Hard surface material seat, API internals

Product Details

Product Features

1.The valve flap is closed by its own weight to prevent the backflow of the fluid to form a sufficiently large flow rate to avoid damaging impact.
2.Through the balance valve and the "wing" structure, the head loss (or head loss) is reduced to the minimum extent.
3.Shorter stroke, combined with the advantages of the balance valve, the valve closed more quickly, to minimize the impact of the phenomenon.

4.Because of the small gap on the pivot pin, a funnel tight seat seal can be achieved throughout the pressure range to ensure the integrity of the valve seat seal between the disc ring and the valve body.

Main external dimensions and connection dimensions

DN	Main external dimensions and connection dimensions
DN	L	D	D1	D2	b	Z-d	H
H41H-16C H41W-16C H41W-16P H41W-16R H41W-16I
15	130	95	65	45	14	4-14	77
20	150	105	75	55	14	4-14	77
25	160	115	85	65	14	4-14	80
32	180	135	100	75	16	4-18	85
40	200	145	110	85	16	4-18	95
50	230	160	125	100	16	4-18	105
65	290	180	145	120	18	4-18	120
80	310	195	160	135	20	8-18	130
100	350	215	180	155	20	8-18	140
125	400	245	210	185	22	8-18	155
150	480	280	240	210	24	8-23	180
200	600	335	295	265	26	12-23	215
250	730	405	355	320	30	12-25	260
300	850	460	410	375	34	12-25	315
H41H-25 H41W-25 H41W-25P H41W-25R H41W-25I
15	130	95	65	45	16	4-14	100
20	150	105	75	55	16	4-14	105
25	160	115	85	65	16	4-14	120
32	180	135	100	78	18	4-18	130
40	200	145	110	85	18	4-18	135
50	230	160	125	100	20	4-18	149
65	290	180	145	120	22	8-18	160
80	310	195	160	135	22	8-18	169
100	350	230	190	160	24	8-23	194
125	400	270	220	180	28	8-25	222
150	480	300	250	218	30	8-25	255
200	600	360	310	278	34	12-25	305
250	730	425	370	332	36	12-30	355
300	850	485	430	390	40	16-30	410

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