Wholesale Stainless Steel Dual Plate Wafer Spring Check Valve Manufacturer, Factories

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Wholesale Stainless Steel Dual Plate Wafer Spring Check Valve Manufacturer, Factories

Type: Wafer type

Series: H71W-10/16

Size: DN40-DN700/2â€-28â€

Pressure rating: PN6/PN10/PN16/PN25

Design standard: AWWA C594

Service: OEM&ODM

The stainless steel wafer check valve is an automatic anti-backflow device featuring a stainless steel body and wafer-type mounting design. It achieves automatic opening and closing via the inherent pressure differential of the medium, requires no external actuation, and is widely used in piping systems handling corrosive or hygienic fluids.

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Product Description

Technical Specifications

Valve Type	Wafer check valve	Structure	Double disc
Standard	AWWA C594	Workmanship	Investment casting
Sealing direction	Single-directional	Sealing grade	Zero leakage
Temperature	-40°C < T < 800°C	Operation	Self-starting

Characteristics

The clamp check valve is made of stainless steel material, with core advantages concentrated in three dimensions: corrosion resistance, adaptability, and durability, which can significantly improve the reliability of the valve under complex working conditions.

Key Advantages

Wide temperature adaptability: Capable of handling both high and low temperature conditions. Stainless steel material has stable mechanical properties in the range of -40 ℃~450 ℃. It can adapt to low-temperature freezing media and meet the needs of high-temperature steam or hot oil.

Lightweight design: Stainless steel has a lower density than cast steel, combined with a clamp-type compact structure, it reduces the load-bearing capacity of pipeline flanges. No additional reinforcement brackets are required.

Convenient maintenance: The smooth inner wall reduces scaling and coking. Daily cleaning requires simple flushing, and anti-corrosion features significantly reduce the frequency and cost of shutdown maintenance.

Packing Details

Standard export wooden case packaging ensures the safety of the valve during international transit.

Application Scenarios

Extensive application in pipeline networks including chemical processing, petroleum refining, pharmaceutical manufacturing, food and beverage production, seawater desalination, water treatment engineering and HVAC systems. Ideal for medium purity and high corrosion resistance requirements.

Material Components

Body		Disc		Stem	Rubber gasket			Spring
Name	Code	Name	Code	Name	Name	Code	Temp ℃	Name
Cast Iron Ductile Iron Carbon steel Stainless steel	Z, Q, C, P	Plated ductile Iron Aluminum bronze Stainless steel CF8M	1, 2, 5, 7	Stainless steel	EPDM Neoprene NBR	X3, X4, X5, X7	-46~+121 -50~+150 -29~+99 -35~+113 -23~+82	Stainless steel

Dimension Chart

DN		D	D1	D2	L	R	t
mm	inch	D	D1	D2	L	R	t
50	2"	107	65	43.3	43	28.2	19
80	3"	142	94	66.4	64	43.4	28
100	4"	162	117	90.8	64	52.8	27
150	6"	218	170	144.6	76	78.6	31
200	8"	273	224	198.2	89	104.4	33
300	12"	378	310	283.9	114	148.3	43
400	16"	489	410	381.0	140	197.4	52
600	24"	690	624	572.6	178	295.4	73
700	28"	800	720	680	229	354	98

Frequently Asked Questions

What are the main standards for this wafer check valve?

The valve is manufactured according to the AWWA C594 standard, ensuring high-quality design and reliable performance in industrial applications.

Does this valve support high-temperature media?

Yes, with its stainless steel construction and suitable sealing options, it can withstand temperatures ranging from -40°C up to 800°C, making it ideal for hot oil and steam.

What is meant by "Zero Leakage" grade?

Zero leakage indicates that the valve provides a complete seal in the reverse flow direction, preventing any fluid backflow under specified pressure conditions.

Why is a double-disc structure used?

The double-disc design allows for a faster response to flow changes, significantly reduces water hammer effects, and occupies less space compared to traditional swing check valves.

Is the valve suitable for seawater desalination?

Absolutely. Using materials like CF8M stainless steel or aluminum bronze provides the necessary corrosion resistance required for seawater and other harsh chemical environments.

Can this valve be installed in tight spaces?

Yes, the wafer (clamp) type design is specifically engineered for compact installation between flanges, requiring no additional support and saving significant pipeline space.