American Standard Check Valve

Your Trusted Partner for High-Quality Valve Solutions

American Standard Check Valve

Material: Carbon steel, Stainless Steel (SS304, SS316)

Size Range: 1½″ ~ 30″

Connection Options: Flange

Working Pressure: Class 150-2500

Working Temperature: -46~540℃

Sealing Options: Flexible graphite

Manufacturing Method:Forging, Carbon steel

Applicable Medium:Oil, Gas, Water

Manufacturing Standard:ANSI, ASME, GB

Product Overview

American standard check valve is a reliable backflow prevention valve designed in accordance with ANSI/ASME standards for industrial piping systems. It allows one-directional flow while automatically preventing reverse flow, protecting pumps, pipelines, and equipment. Widely used in oil and gas, water treatment, power generation, HVAC, and chemical industries, American standard check valves offer stable performance, low maintenance, and dependable sealing across a wide range of pressure and temperature conditions.

Product Features

Designed in accordance with ANSI / ASME standards for global compatibility
Reliable backflow prevention with stable, automatic closing operation
Tight sealing performance to minimise leakage
Available in carbon steel, stainless steel, and alloy steel materials
Suitable for ANSI Class 150–2500 pressure ratings
Durable construction for long service life in demanding conditions
Low maintenance design for safe and efficient operation

Specification Parameters

Performance Parameters in (MPa)

No.	Item Description	150(Lb)	300(Lb)	600(Lb)	900(Lb)	1500(Lb)	2500(Lb)
1	Nominal Pressure	2.0	5.0	10.0	15.0	25.0	42.5
2	Case Test Pressure	3.0	7.5	15.0	22.5	37.5	67.5
3	High-Pressure Sealing Test Pressure	2.2	5.5	11.0	16.5	27.5	49.5
4	Maximum Operating Pressure	<2.0	<5.2	<10.4	<15.6	<25.8	<45.8

Product Specification

Design Standard	Structure Length Standard	Flange Standard	Test & Inspection Standard	Pressure & Temperature Standard
BS1868	ASME B16.10	ASME B16.5	API 598	ASME B16.34

Main Components Material

Part Name	Material name
Body	A216 WCB	A217 WC6	A351 CF8	A351 CF8M	A351 CF3	A351 CF3M
Valve cover	A216 WCB	A217 WC6	A351 CF8	A351 CF8M	A351 CF3	A351 CF3M
Valve plate	A216 WCB	A217 WC6	A351 CF8	A351 CF8M	A351 CF3	A351 CF3M
Sealing face	2Cr13	STL	Integral / STL	Integral / STL	Integral / STL	Integral / STL
Shaft	A182 F6a	A182 F11	A182 F304	A182 F316	A182 F304L	A182 F316L
Gasket	304 + Graphite	304 + Graphite	304 + Graphite	304 + Graphite	304 + Graphite	304 + Graphite
Stud bolt	A193 B7	A193 B7	A193 B8	A193 B8M	A193 B8M	A193 B8M
Nut	A194 2H	A194 6	A194 8	A194 8M	A194 8M	A194 8M
Operating Temp.	–29°C ~ 425°C	–29°C ~ 540°C	–46°C ~ 425°C	–46°C ~ 425°C	–46°C ~ 425°C	–46°C ~ 425°C
Applicable Medium	Water, steam, oil	Water, steam	Weakly corrosive media	Weakly corrosive media	Weakly corrosive media	Weakly corrosive media

ANSI Swing Check Valve (H44H, H44Y, H44W)

Pressure Class: 150Lb–2500Lb
Drawing Reference: Dimensional layout showing valve structure with standard dimension markings.

ANSI Swing Check Valve — Dimensions Data (Class 150)

DN (mm)	DN (in)	L	D	D1	D2	b	z × Φd	H	Weight (kg)
40	1½″	166	130	98.5	73	15	4 × Φ15	154	–
50	2″	203	150	120.6	92	19	4 × Φ19	161	17
65	2½″	216	180	139.7	105	22	4 × Φ19	180	23
80	3″	241	190	152.4	127	24	4 × Φ19	190	33
100	4″	292	230	190.5	157	24	8 × Φ19	203	44
125	5″	330	255	215.5	186	24	8 × Φ22	229	62
150	6″	356	280	241.3	216	25	8 × Φ22	257	78
200	8″	495	345	298.4	270	29	8 × Φ22	292	137
250	10″	622	405	362.0	324	30	12 × Φ25	355	207
300	12″	698	485	431.8	381	32	12 × Φ25	396	279
350	14″	787	535	476.2	413	35	12 × Φ29	445	387
400	16″	864	595	539.8	470	37	16 × Φ29	490	446
450	18″	978	635	577.8	533	40	16 × Φ32	520	621
500	20″	978	700	635.0	584	43	20 × Φ32	546	770
600	24″	1295	815	749.3	692	48	20 × Φ35	880	970
650	26″	1295	870	806.4	749	68	24 × Φ35	910	1276
700	28″	1448	925	863.6	800	71	28 × Φ35	935	1600
750	30″	1524	985	914.4	857	75	28 × Φ35	970	1990
ANSI Swing Check Valve — Dimensions Data (Class 300)
DN (mm)	DN (in)	L	D	D1	D2	b	z × Φd	H	Weight (kg)
40	1½″	241	155	114.5	73	21	4 × Φ22	172	–
50	2″	267	165	127.0	92	22	8 × Φ19	178	20
65	2½″	292	190	149.4	105	26	8 × Φ22	190	24
80	3″	318	210	168.1	127	29	8 × Φ22	210	40
100	4″	356	255	200.2	157	32	8 × Φ22	241	51
125	5″	400	280	235.0	186	35	12 × Φ22	267	65
150	6″	444	320	269.7	216	37	12 × Φ25	306	90
200	8″	533	380	330.2	270	41	16 × Φ29	368	175
250	10″	622	445	387.4	324	48	16 × Φ32	394	210
300	12″	711	520	450.8	381	51	20 × Φ32	445	286
350	14″	838	585	514.4	413	54	20 × Φ35	470	400
400	16″	864	650	571.5	470	57	24 × Φ35	533	550
450	18″	978	710	628.8	533	64	24 × Φ38	584	700
500	20″	1016	775	685.8	584	64	24 × Φ41	610	870
600	24″	1346	915	812.8	692	70	28 × Φ44	860	1931
650	26″	1346	970	876.3	749	79	28 × Φ44	930	2375
700	28″	1499	1035	939.8	800	86	28 × Φ44	1163	2660
750	30″	1594	1095	996.9	857	92	28 × Φ48	1270	3230
ANSI Swing Check Valve — Dimensions Data (Class 600)
DN (mm)	DN (in)	L	D	D1	D2	b	z × Φd	H	Weight (kg)
50	2″	292	165	127.0	92	25	8 × Φ19	203	34
65	2½″	330	190	149.4	105	29	8 × Φ22	229	45
80	3″	356	210	168.1	127	32	8 × Φ22	235	63
100	4″	432	273	215.9	157	38	8 × Φ25	286	114
125	5″	508	330	266.7	186	44	8 × Φ29	292	160
150	6″	559	355	292.1	216	48	12 × Φ29	330	207
200	8″	660	420	349.2	270	56	12 × Φ32	381	387
250	10″	787	510	431.8	324	64	16 × Φ35	457	580
300	12″	838	560	489.0	381	67	20 × Φ35	584	778
350	14″	889	605	527.0	413	70	20 × Φ38	635	985
400	16″	991	685	603.0	470	76	20 × Φ41	584	1320
450	18″	1092	745	654.1	533	83	20 × Φ44	752	1620
500	20″	1194	815	723.9	584	90	24 × Φ44	975	2120
600	24″	1397	940	838.2	692	102	24 × Φ51	1111	3100

ANSI Swing Check Valve — Dimensions Data (Class 900)
DN (mm)	DN (in)	L	D	D1	b	z × Φd	H	Weight (kg)
50	2″	372	215	95.2	15.1	8 × Φ25	216	40
65	2½″	422	245	108.0	190.5	8 × Φ29	254	60
80	3″	384	240	123.8	190.5	8 × Φ25	292	88
100	4″	461	290	149.2	235.0	8 × Φ32	318	122
125	5″	562	350	279.4	51	8 × Φ35	344	150
150	6″	613	380	317.5	56	12 × Φ32	368	200
200	8″	740	470	393.7	64	12 × Φ38	432	230
250	10″	842	545	469.9	70	16 × Φ38	546	860
300	12″	969	610	533.4	79	20 × Φ38	660	1390
350	14″	1029	640	558.8	86	20 × Φ41	782	1380
400	16″	1130	705	616.0	90	20 × Φ44	838	1900
ANSI Swing Check Valve — Dimensions Data (Class 1500)
DN (mm)	DN (in)	L	D	D1	b	z × Φd	H	Weight (kg)
65	2½″	419	245	190.5	41.5	8 × Φ29	193	57
80	3″	470	265	203.2	48.0	8 × Φ32	246	66
100	4″	546	310	241.3	54.0	8 × Φ35	288	87
125	5″	673	375	292.1	73.5	8 × Φ42	324	108
150	6″	705	395	317.5	83.0	12 × Φ39	373	175
200	8″	832	485	393.7	92.9	12 × Φ45	466	173
250	10″	991	585	482.6	108.0	12 × Φ51	536	216
300	12″	1130	675	571.5	124.0	16 × Φ54	857	–
350	14″	1257	750	635.0	133.0	16 × Φ61	950	–
400	16″	1384	825	704.9	146.0	16 × Φ67	1020	–
ANSI Swing Check Valve — Dimensions Data (Class 2500)
DN (mm)	DN (in)	L	D	D1	b	z × Φd	H	Weight (kg)
65	2½″	508	265	196.8	57.5	8 × Φ32	255	98
80	3″	578	305	228.6	67.0	8 × Φ35	315	120
100	4″	673	355	273.0	76.5	8 × Φ42	360	240
125	5″	794	420	323.8	92.5	8 × Φ48	418	410
150	6″	914	485	368.3	108.0	8 × Φ54	465	590
200	8″	1022	550	438.1	127.0	12 × Φ54	555	990
250	10″	1270	675	539.7	165.5	12 × Φ67	630	1250
300	12″	1422	760	619.3	184.0	12 × Φ73	1000	5500

Specification Applications

Oil and gas pipelines requiring reliable backflow prevention
Petrochemical and chemical processing systems
Power generation and steam service lines
Water treatment and industrial water supply systems
Refinery and process piping meeting ANSI/ASME standards
HVAC and industrial fluid control applications

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

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Your Trusted Partner for High-Quality Valve Solutions

American Standard Check Valve

American Standard Check Valve

Product Overview

Product Features

Specification Parameters

Performance Parameters in (MPa)

Product Specification

Main Components Material

ANSI Swing Check Valve (H44H, H44Y, H44W)

ANSI Swing Check Valve — Dimensions Data (Class 150)

Specification Applications

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

Flow Control

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Vertical Check Valve

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