Position: Home > Products > API valve series

American Standard Check Valve

Size Range::2”-24”
Pressure: :Class150-Class600
Body Materials:WCB/SS
Connection end::Flange
Temperature::≤150℃
Design Standard: :API6D / API600

We're here to help:
Easy ways to get the answers you need.

Product description
Technical parameters

This is an American standard swing check valve, specifically designed to prevent backflow of media in pipelines. It conforms to API 608 standards and is suitable for industries such as petroleum, chemical, and power generation. Its robust structure and reliable sealing effectively ensure safe unidirectional flow in the system.

Technical Requirements

1.Design & manufacture conform to BS1868

2.Face to Face dimension conforms to ASME B16.10

3.Flange dimension conforms to ASME B16.5

4.Test & Inspect conform to API 598

pressure	NPS（in）	DN（mm）	L	D	D1	D2	b	Z - Φd	H
Class150	2"	50	203	157	120.7	92	19.5	4 - Φ19	161
	2 1/2"	65	216	178	139.7	105	22.5	4 - Φ19	180
	3"	80	241	190.5	152.4	127	24	4 - Φ19	190
	4"	100	292	229	190.5	157.2	24	8 - Φ19	220
	6"	150	356	279	241.5	216	25.5	8 - Φ22.5	257
	8"	200	495	343	298.5	270	29	8 - Φ22.5	292
	10"	250	622	406	362	324	30.5	12 - Φ25	350
	12"	300	698	483	432	381	32	12 - Φ25	398
	14"	350	787	533	476.8	413	35	12 - Φ29	445
	16"	400	864	597	539.8	470	37	16 - Φ29	490
	18"	450	978	635	577.8	533	40	16 - Φ32	520
	20"	500	978	698	635	584	43	20 - Φ32	546
	24"	600	1295	813	749.3	692	48	20 - Φ35	880
Class300	2"	50	267	165	127	92	22.5	8 - Φ19	179.5
	2 1/2"	65	292	190	150	105	25	8 - Φ22	190
	3"	80	318	210	168	127	29	8 - Φ22.5	212.4
	4"	100	356	254	200	157	32	8 - Φ22.5	246
	6"	150	445	317.5	269.7	216	37	12 - Φ22.5	292
	8"	200	533	381	330	270	41.5	12 - Φ25.5	328
	10"	250	622	444.5	387	324	48	16 - Φ28.5	378.6
	12"	300	711	521	451	381	51	16 - Φ32	420
	14"	350	838	584	514	54	54	20 - Φ32	470
	16"	400	864	648	572	57	57	20 - Φ35	530
	18"	450	978	711	629	60	60	24 - Φ35	584
	20"	500	1016	775	686	64	64	24 - Φ35	610
	24"	600	1346	914	813	70	70	24 - Φ41	860
Class600	2"	50	292	165	127	92	25	8 - Φ19	203
	2 1/2"	65	330	190	150	105	29	8 - Φ22	229
	3"	80	356	210	168	127	32	8 - Φ22	235
	4"	100	432	273	216	157	38	8 - Φ25	286
	6"	150	559	356	292	216	48	8 - Φ29	330
	8"	200	660	419	349	270	56	12 - Φ29	381
	10"	250	787	508	432	324	64	12 - Φ32	457
	12"	300	838	559	489	381	67	16 - Φ35	584
	14"	350	889	603	527	413	70	20 - Φ38	635
	16"	400	991	686	603	470	76	20 - Φ41	684

Key parameters:

Size range: 2" - 24", covering medium to large diameter pipeline systems;

Pressure rating: Class 150 - Class 600, meeting medium to high pressure conditions;

Valve body material: WCB (carbon steel) or SS (stainless steel), selectable according to the corrosiveness of the media;

Connection method: Flange connection, facilitating installation and maintenance;

Operating temperature: ≤150°C, suitable for general high-temperature fluids;

Design standard: API 6D / API 600, ensuring structural strength and sealing performance meet international standards.

This valve uses a swing valve disc design, relying on the pressure of the medium itself to achieve automatic opening and closing. It features minimal impact and excellent sealing when closed, making it particularly suitable for high-flow, low-resistance pipeline systems. The valve body is clearly marked with flow direction arrows, which facilitates on-site installation and identification, ensures unidirectional flow of the medium, and avoids equipment damage or safety accidents caused by system backflow.

Inquiry