ANSI/ASME Swing Check Valve

ANSI/ASME swing check valves are automatic pipeline valves designed to prevent reverse fluid flow, compliant with ANSI/ASME and international industry standards (e.g., ANSI B16.34, BS1868). They feature a "swing" disc structure: when fluid flows forward, the disc opens under pressure; when flow reverses, the disc closes via gravity (or spring assistance) to seal the pipeline.

I. Product Introduction

ANSI/ASME swing check valves are automatic pipeline valves designed to prevent reverse fluid flow, compliant with ANSI/ASME and international industry standards (e.g., ANSI B16.34, BS1868). They feature a “swing” disc structure: when fluid flows forward, the disc opens under pressure; when flow reverses, the disc closes via gravity (or spring assistance) to seal the pipeline.

These valves adopt flange connections (matching ANSI B16.5 dimensions) for easy installation in ANSI/ASME standard pipeline systems. Made of high-performance materials (e.g., carbon steel, stainless steel), they are widely used in petroleum, chemical, power generation, water treatment, and other industries—suitable for media like water, steam, oil, and corrosive fluids, effectively protecting pumps, compressors, and downstream equipment from damage caused by backflow.

II. Product Features

Standard Compliance & Compatibility

Strictly designed/manufactured per ANSI B16.34, BS1868; face-to-face dimensions follow ANSI B16.10, and flange dimensions align with ANSI B16.5—ensuring full compatibility with ANSI/ASME pipeline systems.
Reliable Backflow Prevention

The swing disc structure (paired with precision sealing surfaces) achieves tight closure when flow reverses, minimizing leakage risk; the disc’s self-closing design (gravity-driven) ensures rapid response to flow changes.
Broad Material Adaptability

Main parts (body, bonnet, wedge) offer multiple material options (e.g., WCB, CF8, CF8M, CF3M), adapting to different temperatures, pressures, and corrosive media (e.g., nitric acid, acetic acid).
Durable Sealing & Structural Stability

Equipped with high-quality fasteners (e.g., A193-B7 bolts, A194-2H nuts) and precision-machined sealing surfaces; the back seal test (per API 598) ensures long-term sealing reliability under high-pressure conditions.
Low Flow Resistance & Easy Maintenance

The streamlined flow path reduces pressure loss during forward flow; the flange-connected bonnet allows convenient disassembly for disc, seal, and internal part inspection/maintenance.

III. Technical Data

1. Standards

Category	Applicable Standards
Design & Manufacture	BS1868, ANSI B16.34
Face-to-Face Dimensions	ANSI B16.10
End Flange Dimensions	ANSI B16.5
Pressure-Temperature Rating	ANSI B16.34
Pressure Test	API 598

2. Test Pressure

Pressure Class	Shell Test	Seal Test	Back Seal Test	Air Seal Test
	MPa (Ibf/in²)	MPa (Ibf/in²)	MPa (Ibf/in²)	MPa (Ibf/in²)
150	3.1 (450)	2.2 (315)	2.2 (315)	0.5~0.7 (60~100)
300	7.8 (1125)	5.6 (815)	5.6 (815)	–
400	10.3 (1500)	7.6 (1100)	7.6 (1100)	–
600	15.3 (2225)	11.2 (1630)	11.2 (1630)	–
900	23.1 (3350)	16.8 (2440)	16.8 (2440)	–
1500	38.4 (5575)	28.1 (4080)	28.1 (4080)	–
Test Medium	Water	Air	Air	Air

3. Materials for Main Parts

Part Name	Material Options
Body, Bonnet	A216 WCB, A352 LCB, A217 WC6, A217 WC9, A217 C5, A351 CF8, A351 CF8M, A351 CF3, A351 CF3M
Wedge	Same as Body/Bonnet material
Arm, Yoke	Same as Body/Bonnet material
Arm Pin	A182 F6, A182 F304, A182 F316, A182 F304L, A182 F316L
Bonnet Bolt	A193-B7, A320-L7, A193-B8
Nut	A194-2H, A194-7, A194-8

Ⅳ．The main shape and connection size

Type	Size(mm		Dimension(mm)
Type	Inch	DN	L	D	D1	D2	b	z- Φd	H
H H44W-150Lb Y	1″	25	127	108	79.5	51	12	4- Φ15	90
	11/2″	40	165	127	98.5	73	15	4- Φ15	115
	2″	50	203	152	120.7	92	16	4- Φ19	150
	21/2″	65	216	177.8	139.7	104.7	18	4- Φ19	160
	3″	80	241	190.5	152.4	127	19	4- Φ19	180
	4″	100	292	229	190.5	157	24	8- Φ19	220
	5″	125	330	254	216	185.7	26	8- Φ22	280
	6″	150	356	279	241.3	216	26	8- Φ22	340
	8″	200	495	343	298.5	270	29	8- Φ22	400
	10″	250	622	406	362	324	31	12- Φ25	460
	12″	300	698	483	432	381	32	12- Φ25	530
	14″	350	787	533	476.3	413	35	12- Φ29	580
	16″	400	864	597	540	470	37	16- Φ29	600
	18″	450	978	635	578	533.4	40	16- Φ32	650
	20″	500	978	698.5	635	584	43	20- Φ32	700
	24″	600	1295	813	749.3	692	48	20- Φ35	780
	28″	700	1448	927	863.6	800	72	28- Φ35	850
	30″	800	1524	984	914.4	857	75	28- Φ35	920
H H44W-300Lb Y	2″	50	267	165	127	92	23	8- Φ19	170
	21/2″	65	292	190.5	149.4	104.7	26	8- Φ22	180
	3″	80	318	210	168.2	127	29	8- Φ22	210
	4″	100	356	254	200.2	157	32	8- Φ22	290
	5″	125	400	279	235	185.7	35	8- Φ22	290
	6″	150	444	318	270	216	37	12- Φ22	350
	8″	200	533	381	330	270	42	12- Φ25	430
	10″	250	622	445	387.5	324	48	16- Φ29	480
	12″	300	711	521	451	381	51	16- Φ32	550
	14″	350	838	584	514.5	413	54	20- Φ32	620
	16″	400	864	648	571.5	470	58	20- Φ35	650
	18″	450	978	711	628.7	533.4	61	24- Φ35	690
	20″	500	1016	775	685.8	584	64	24- Φ35	740
	24″	600	1346	914.4	812.8	692	70	24- Φ41	800
	28″	700	1499	1035	939.8	800	86	28- Φ45	860
	30″	800	1594	1092	997	857	92	28- Φ48	980
H H44W-600Lb Y	2″	50	292	165	127	92	26	8- Φ19	190
	21/2″	65	330	190.5	149.4	104.7	29	8- Φ22	210
	3″	80	356	210	168.2	127	32	8- Φ22	230
	4″	100	432	273	216	157	38	8- Φ25	300
	5″	125	508	330	266.7	185.7	45	8- Φ29	310
	6″	150	559	356	292	216	48	12- Φ29	370
	8″	200	660	419	349	270	56	12- Φ32	450
	10″	250	787	508	432	324	64	16- Φ35	500
	12″	300	838	559	489	381	67	20- Φ35	570
	14″	350	889	603	527	413	70	20- Φ38	640
	16″	400	991	686	603	470	77	20- Φ41	670
	18″	450	1092	743	654	533.4	83	20- Φ44	710
	20″	500	1194	855	724	584	89	24- Φ44	760
	24″	600	1397	1040	838	692	102	24- Φ52	830
H H44W -900Lb Y	2″	50	368	216	165.1	92	38.5	8- Φ26	220
	21/2″	65	419	244	190.5	104.7	41.5	8- Φ29	250
	3″	80	381	241	190.5	127	38.5	8- Φ26	270
	4″	100	457	292	234.9	157	44.5	8- Φ32	330
	5″	125	559	349	279.4	185.7	51	8- Φ35	350
	6″	150	610	384	317.5	216	56	12- Φ32	420
	8″	200	737	470	393.7	270	63.5	12- Φ39	490
	10″	250	838	545	469.9	324	70	16- Φ39	550
	12″	300	965	610	533.4	381	79.5	20- Φ39	630
	14″	350	1029	640	558.8	413	86	20- Φ42	680
	16″	400	1130	705	615.9	470	89	20- Φ45	720
	18″	450	1219	785	685.8	533.4	102	20- Φ51	750
	20″	500	1321	855	749.3	584	108	20- Φ54	800
	24″	600	1549	1040	901.7	692	140	20- Φ67	880

About Us

Founded in 2016, Shanghai Wangye Valve Manufacturing Co., Ltd. is a professional industrial fluid control manufacturer with nearly a decade of experience, integrating R&D, intelligent production, sales, and customized solutions. Leveraging Shanghai’s advanced manufacturing advantages, we’ve built a reliable brand across petrochemicals, power, metallurgy, water treatment, and new energy industries, offering gate/ball/butterfly valves and tailored solutions for harsh conditions. Backed by advanced equipment, full-process quality control, and ISO certifications, we adhere to “Integrity, Quality, Customer Focus, Innovation” and provide comprehensive services, striving for long-term cooperation and continuous technological upgrading.

Why Choose Us

Talent and Efficient Team

WYE always insists that employees are the most valuable asset of the enterprise and the future of WYE; Adhere to prioritizing talent selection, education, and utilization in the development of enterprises; introducing talent as the highest return investment behavior. We regard talent as the primary resource for effective management, and pursue a high degree of harmony and unity between employee personal development and enterprise development.We encourage you to have a special perspective, think independently, and be good at organizing resources from all parties. Always maintain a responsible attitude towards results and a positive team spirit that is willing to share in every task..

High End Processing Equipment Creating Excellent Product Quality

Advanced automated production equipment and sophisticated assembly line production demonstrate first-class quality.Technical experts directly participate in production to ensure the concealment and reliability of the product.The increasing awareness of high-quality products and the continuous supply of industrial products have made WYE constantly changing.No matter how the world changes, the persistent spirit of excellence among WTE people remains unchanged.

Warehouse Strength

In our facility, raw materials (including core components and packaging supplies) are strictly controlled via a real-time digital inventory system—tracking batches, shelf life, and storage conditions to boost traceability and cut waste. Semi-finished products, post-preliminary quality checks, are stored per strict industry standards: labeled with progress/inspection records to avoid cross-contamination and damage. Finished products are sorted into specialized warehouses by type, market, and delivery schedule, streamlining picking and reducing dispatch delays. This standardized process effectively boosts efficiency: cutting redundant steps by 30%, shortening fulfillment cycles by 20%, and minimizing inventory/shipment errors.

Customized Solutions & After-Sales Support

Tailored to the distinct demands of industries like petrochemicals, new energy, and metallurgy, WYE provides personalized industrial fluid control solutions—covering pre-project demand assessment, customized valve design (matching specific working conditions like pressure or medium type), and on-site technical consultation to align with clients’ operational scenarios. Additionally, we offer comprehensive after-sales support: including on-site installation guidance, regular equipment maintenance inspections, and 24/7 responsive fault troubleshooting, which ensures the stable operation of clients’ systems and strengthens long-term cooperative partnerships.

Our Services

Our company is a one-stop solution for all valve-related needs, offering customization to tailor valves to unique specifications, professional installation & commissioning for seamless integration and optimal performance, maintenance & repair to keep valves in top condition and extend their lifespan, and technical support & consultation for expert advice on selection, optimization, and troubleshooting throughout every project stage.

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ANSI/ASME Swing Check Valve

I. Product Introduction

II. Product Features