Product Description

American standard swing check valve is widely used in pipelines with nominal pressure 150LB-2500LB and working temperature of -29～550℃ in petroleum, chemical industry, thermal power station and other working conditions. The applicable medium is: water, oil, steam Wait. Its main function is to prevent the backflow of the medium, the reverse rotation of the pump and its driving motor, and the discharge of the medium in the container.

Product Features

1. The selection of materials is exquisite, in line with relevant domestic and foreign standards, and the overall quality of the materials is high.2. The products are produced according to the requirements of American National Standard ANSI B16.34 and American Petroleum Institute Standard API 6D.3. Various piping flange standards and flange sealing types can be used to meet various engineering needs and user requirements.4. The material of the valve body is complete, and the gasket can be reasonably selected according to the actual working conditions or user requirements, and can be suitable for various pressure, temperature and medium working conditions.5. The matching of sealing pairs is advanced and reasonable. The sealing surface of the valve disc and valve seat is made of iron-based alloy or Stellite cobalt-based cemented carbide, which is wear-resistant and high-temperature resistant.

Main external connection dimensions and weight

Class	NPS	DN	L	D	D1	D2	b	Z-Φd	H	WT (㎏)
	in	mm
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