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Model: H44H / W
Nominal diameter: DN50 ~ 800 mm
Nominal pressure: PN1.6 ~ 16.0MPa
Operating temperature: -196 ℃ ~ + 550 ℃
Main material: carbon steel, stainless steel
Suitable medium: water, steam, oil, nitric acid, acetic
Design and manufacture: GB12236
Structural length: GB12221
Connecting flange: JB / T79-1994
Test and inspection: JB / T9092-1999

National Standard Swing Check Valve Uses and Features

H44H / W Swing check valve is designed and manufactured in strict accordance with GB12236 standard. The pin shaft is connected with the valve flap with built-in structure, excellent performance and more reliable sealing. Products are widely used in petroleum, chemical, pharmaceutical, power industry and other conditions of the pipeline.
 

National Standard Swing Check Valve main performance specifications

test pressure	Nominal pressure (MPa)
	1.6	2.5	4.0	6.4	10.0
Shell test	2.4	3.8	6.0	9.6	15.0
Seal test	1.8	2.8	4.4	7.1	11.0
Body material	WCB (C)	CF8 (P)	CF 8M (R)	WC6	WC9
Operating temperature	≤ 425	≤ 100	≤ 100	≤ 550	≤ 550
Suitable media	Water, steam, oil	Nitric acids	Acetic acid	steam	steam

 GB Qi Kai check valve implementation of standards

Design and manufacture: GB12236   
 structure length: GB12221     
 connecting flange: JB / T79-1994    
 test and inspection: JB / T9092-1999
 

GB Qi Kai check valve main connection and dimensions and weight

PN	DN	Main connection size (mm)							H44 dimensions	Weight  (kg)
	mm	L	D	D1	D2	b	f	z-φd	H
2.0Mpa	50	203	152	120.5	92	16	1.6	4-19	165	17
	65	216	178	139.5	105	17.5	1.6	4-19	175	25
	80	241	190	152.5	127	19.5	1.6	4-19	190	29
	100	292	229	190.5	157	24	1.6	8-19	215	50
	125	330	254	216	186	24	1.6	8-22	245	75
	150	356	279	241.5	216	25.5	1.6	8-22	265	85
	200	495	343	298.5	270	29	1.6	8-22	320	150
	250	622	406	362	324	30.5	1.6	12-25	365	240
	300	698	483	432	381	32	1.6	12-25	415	350
	350	787	533	476	413	35	1.6	12-29	460	460
	400	864	597	540	470	37	1.6	16-29	495	580
	500	978	698	635	584	43	1.6	20-32	590	840
	600	1295	813	749.5	692	48	1.6	20-35	650	1140
	700	1448	927	863.5	800	71.5	1.6	28-35
5.0MPa	50	267	165	127	92	22.5	1.6	8-19	190	28
	65	292	190	149	105	25.5	1.6	8-22	205	33
	80	318	210	168	127	28 5	1.6	8-22	220	45
	100	356	254	200	157	32	1.6	8-22	245	70
	125	400	279	235	186	35	1.6	8-22	275	110
	150	444	318	270	216	36.5	1.6	12-22	295	150
	200	533	381	330	270	41.5	1.6	12.25	330	230
	250	622	444	387.5	324	48	1.6	16-29	420	390
	300	711	521	451	381	51	1.6	16-32	480	520
	350	838	584	514.5	413	54	1.6	20-32	535	710
	400	864	648	571.5	470	57.5	1.6	20-35	585	890
	500	1016	775	686	584.5	63.5	1.6	24-35	685	1360
	600	1364	914.5	813	692.5	70	1.6	24-41	785	2040
10.0MPa	50	292	165	127	92	26	6.4	8-19	210	32
	65	330	190	149	100	29	6.4	8-22	230	42
	80	356	210	168	127	32	6.4	8-22	255	60
	100	432	273	216	157	38	6.4	8-25	295	95
	125	508	330	266.5	186	45	6.4	8-29	310	120
	150	559	355.5	292	216	47.5	6.4	12-29	365	220
	200	660	419.5	349	270	56	6.4	12-32	420	390
	250	787	508	432	324	63.5	6.4	16-35	505	630
	300	838	559	489	381	66.5	6.4	20-35	545	870
	350	889	603.5	527	413	710	6.4	20-38	600	940
	400	991	686	603	470	76.5	6.4	20-41	650	1100