American standard swing check valve-Check valve series-止回阀厂家-上海冠环阀门制造有限公司

Product overview

The American standard swing check valve adopts an internal rocker arm rotating structure, and all opening and closing parts are installed inside the valve, without penetrating the valve body. Suitable for pipelines in industries such as petroleum, chemical, pharmaceutical, and power, to prevent media backflow.

Product characteristics
1, the selection of materials, in line with domestic and foreign standards, the overall quality of materials is high.
2, products according to the American national standard ANSI B16.34, American Petroleum Institute standard API 6D requirements production.
3. Various pipe flange standards and flange sealing types can be used to meet various engineering needs and user requirements.
4, the valve body material variety is complete, the gasket can be reasonably selected according to the actual working conditions or user requirements, and can be applied to a variety of pressure, temperature and medium conditions.
5, the sealing pair is advanced and reasonable, the sealing surface of the valve disc and seat is made of iron base alloy or Stellite cobalt-based cemented carbide surfacing surface, wear resistance and high temperature resistance.

Main shape connection size and weight

Class	NPS	DN	L	D	D1	D2	b	Z-Φd	H	WT (㎏)
Class	in	mm	L	D	D1	D2	b	Z-Φd	H	WT (㎏)
150Lb	2″	50	203	157	120.7	92	19.50	4-Φ19	161	17
	2-1/2″	65	216	178	139.7	105	22.5	4-Φ19	180	23
	3″	80	241	190.5	152.4	127	24	4-Φ19	190	33
	4″	100	292	229	190.50	157.2	24	8-Φ19	220	44
	6″	150	356	279	241.5	216	25.5	8-Φ22.5	257	78
	8″	200	495	343	298.5	270	29	8-Φ22.5	292	137
	10″	250	622	406	362	324	30.5	12-Φ25	350	207
	12″	300	698	483	432	381	32	12-Φ25	398	279
	14″	350	787	533	476.8	413	35	12-Φ29	445	387
	16″	400	864	597	539.8	470	37	16-Φ29	490	446
	18″	450	978	635	577.8	533	40	16-Φ32	520	621
	20″	500	978	698	635	584	43	20-Φ32	546	770
	24″	600	1295	813	749.3	692	48	20-Φ35	880	970
300Lb	2″	50	267	165	127	92	22.5	8-Φ19	179.5	20
	2-1/2″	65	292	190	150	105	25	8-Φ22	190	24
	3″	80	318	210	168	127	29.0	8-Φ22.5	212.4	40
	4″	100	356	254	200	157	32.0	8-Φ22.5	246	51
	6″	150	445	317.5	269.7	216	37.0	12-Φ22.5	292	90
	8″	200	533	381	330	270	41.5	12-Φ25.5	328	175
	10″	250	622	444.5	387	324	48.0	16-Φ28.5	378.6	210
	12″	300	711	521	451	381	51.0	16-Φ32	420	286
	14″	350	838	584	514	54	57	20-Φ32	470	400
	16″	400	864	648	572	57	57	20-Φ35	530	550
	18″	450	978	711	629	60	60	24-Φ35	584	700
	20″	500	1016	775	686	64	64	24-Φ35	610	860
	24″	600	1346	914	813	70	70	24-Φ41	860	1931
600Lb	2″	50	292	165	127	92	25	8-Φ19	203	34
	2-1/2″	65	330	190	150	105	29	8-Φ22	229	45
	3″	80	356	210	168	127	32	8-Φ22	235	63
	4″	100	432	273	216	157	38	8-Φ25	286	114
	6″	150	559	356	292	216	48	8-Φ29	330	207
	8″	200	660	419	349	270	56	12-Φ29	381	387
	10″	250	787	508	432	324	64	12-Φ32	457	580
	12″	300	838	559	489	381	67	16-Φ35	584	778
	14″	350	889	603	527	413	70	20-Φ38	635	9896
	16″	400	991	686	603	470	76	20-Φ41	684	1380