Clamp Check Valve (single Swing Type)

The Clamp Check Valve (Single Swing Type), especially the fully lined model, is a high-performance automatic valve designed for controlling medium flow in various industrial pipelines. It adopts a clamp connection method, which features convenient installation and disassembly, enabling quick maintenance and replacement without affecting the overall pipeline system. The single swing structure is the core design of this valve, relying on the pressure of the medium itself to drive the valve disc to open and close, thereby preventing the reverse flow of the medium.

I. Product Introduction

This valve is widely applicable to different working conditions, including chemical, petroleum, pharmaceutical, food and beverage, water treatment and other industries. It can handle a variety of media such as corrosive liquids, high-temperature gases, and viscous fluids (depending on the lining material and main component materials). With its reliable sealing performance and stable operation, it effectively protects the safety of pipeline equipment, avoids damage caused by medium backflow, and ensures the smooth progress of the production process. The fully lined design further enhances the corrosion resistance of the valve, making it suitable for harsh working environments with strong corrosive media.

II. Product Features

Convenient Clamp Connection: The clamp connection method simplifies the installation and disassembly process. Compared with traditional flange connection, it saves time and labor, reduces the workload of on-site construction, and is easy to realize quick maintenance and replacement of the valve. At the same time, the connection is tight, which can effectively prevent medium leakage.
Reliable Single Swing Structure: Adopting a single valve rotary (single swing) basic structure, the valve disc opens and closes flexibly under the action of medium pressure. The flow resistance is small during opening, which does not affect the normal flow of the medium; when the medium flows backward, the valve disc can quickly close under the combined action of reverse pressure and its own weight, achieving reliable check to prevent backflow.
Excellent Corrosion Resistance (Fully Lined Model): The fully lined design uses high-performance corrosion-resistant materials such as FEP (F4), PFA (Soluble Polytetrafluoroethylene), and PO (Polyolefin) as the lining and seat materials. These materials have excellent chemical stability and can resist the erosion of most strong acids, alkalis, salts and organic solvents, extending the service life of the valve in corrosive working conditions.
Wide Range of Material Options: The valve body, valve cover, shaft, valve plate and other main components provide a variety of material options, including gray cast iron, carbon steel, stainless steel, ultra-low carbon stainless steel, etc. Users can choose the appropriate material combination according to the medium characteristics, working pressure, temperature and other working conditions to ensure the adaptability and reliability of the valve.
Compliance with Multiple Standards: The product is designed and manufactured in strict accordance with multiple international and domestic standards such as JB/T 8937, API 6D, HG/T 20592, ASME B16.5, API 598, and GB 13927. It has standardized structure and performance, ensuring interchangeability and compatibility with other pipeline components, and meeting the quality requirements of different regions and industries.
Stable Sealing Performance: The combination of high-precision valve disc and seat, as well as the reasonable structural design, ensures the excellent sealing performance of the valve. It can effectively prevent medium leakage even under high pressure and high temperature working conditions, reducing energy waste and environmental pollution.

III. Technical Data

Basic Parameters

Product Type: Clamp Connection Check Valve (Fully Lined), Single Swing Type
Nominal Pressure: PN0.6~1.6 (MPa), ANSI 150Lb
Nominal Diameter: DN40~500 (mm), NPS 1½~20
Basic Structure Form: Single Valve Rotary (Single Swing)
Basic Model: H74F46, H74F4, H74PFA

Implementation Standards

Design and Manufacturing: JB/T 8937, API 6D
Structure Length: (Enterprise Standard) Q/NFL-06-99, JB/T 8937
Flange Size: HG/T 20592 (or as required by the contract), ASME B16.5
Pressure Test: API 598, GB 13927
Symbolization: MSS SP-25, GB 12220
Filling: ASME B16.34, GB/T 12252

Main Parts and Components Material Table

Serial Number	Part Name	Gray Cast Iron (Z)	Carbon Steel (C)	Stainless Steels (P)	Stainless Steels (R)	Ultra-Low Carbon Stainless Steel (PL)	Ultra-Low Carbon Stainless Steel (RL)
1	Valve Body, Valve Cover	HT250	WCB	CF8	CF8M	CF3	CF3M
2	Lining/Seat	FEP (F4), PFA (Soluble Polytetrafluoroethylene), PO (Polyolefin)
3	Shaft, Valve (Plate)	1Cr13/35	WCB	1Cr18Ni9/CF8	–	–	00Cr17Ni14Mo2/CF3M
4	Bolt (Male Component of Nut and Bolt)	35	35	1Cr17Ni2	1Cr17Ni2	1Cr18Ni9Ti	1Cr18Ni9Ti
5	Nut (Female Component of Nut and Bolt)	45	45	0Cr18Ni9	0Cr18Ni9	0Cr18Ni9	0Cr18Ni9

Ⅳ．The main shape and connection size

Main parts and components material table

serial number	Part Name	gray cast iron	carbon steel	stainless steels		Ultra-low carbon stainless steel
serial number	Part Name	Z	C	P	R	PL	RL
1	Valve body, valve cover	HT250	WCB	CF8	CF8M	CF3	CF3M
2	Lining/seat	FEP(F4) PFA(Solublepolytetrafluoroethylene				PO(poly-terminal hydrocarbon (PET))
3	Shaft, Valve (Plate)	1Cr13/35 WCB 1Cr18Ni9/CF8 00Cr17Ni14Mo2/CF3M
4	bolt (male component of nut and bolt)	35	35	1Cr17Ni2	1Cr17Ni2	1Cr18Ni9Ti	1Cr18Ni9Ti
5	nut (female component of nut and bolt)	45	45	0Cr18Ni9	0Cr18Ni9	0Cr18Ni9	0Cr18Ni9

Main connection dimensions and weight

Nominal diameter		PN0.6(MPa)			PN1.0/1.6(MPa)			PN2.5(MPa)/ANSI300Lb
DN(mm)	NPS(inch)	L	D	W(kg)	L	D	W(kg	L	D	W(kg)
40	11/2	26	80	1.0	26	88/73	1.2	26	88/73	1.4
50	2	26	90	1.1	26	102/92	1.3	26	102/92	1.5
65	21/2	26	110	1.3	26	122/105	1.6	26	122/105	2.0
80	3	26	128	2.5	26	138/127	3.0	26	138/127	3.8
100	4	26	148	4.8	26	158/157	5.4	26	162/157	6.3
125	5	26	178	4.8	26	188/186	5.4	26	188/186	6.3
150	6	29	202	6.5	29	212/216	7.8	29	218/216	8.8
200	8	30	258	8	30	268/270	10	30	278/270	12
250	10	30	312	15	30	320/324	18	38	335/324	20
300	12	38	365	25	38	370/381	30	51	395/381	32
350	14	44	415	36	44	430/413	41	51	450/413	45
400	16	51	465	46	51	482/470	55	51	505/470	60
450	18	60	520	68	60	532/533	78	76	555/533	85
500	20	64	570		64	585/584	90	83	615/584	98

Table D values: PN 1.6 and 2.5 take the values of ANSI 150Lb and ANSI 300Lb, respectively.

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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