Check Valve With Single Disc

The single-disc check valve is also called a single-plate check valve, a wafer check valve: it is a valve that can automatically prevent fluid from flowing back. The disc of the check valve is opened under the action of fluid pressure, and the fluid flows from the inlet side to the outlet side. When the pressure on the inlet side is lower than that on the outlet side, the valve flap is automatically closed under the action of the fluid pressure difference, gravity and other factors to prevent the fluid from flowing back. It can be installed horizontally or vertically. For vertical installation, pay attention to the flow of water from the bottom to the top, and pay attention to whether the installation direction is correct during installation.

Check Valve with Single Disc

Size	d	D	D1	L
1/2"	16	49.5	50	29.5
3/4"	17	49.5	55	29.5
1"	21	68	70	28
1-1/4"	29	76	80	40
1-1/2"	38	86.5	90	34
2"	48	100.5	105	40
2-1/2"	62	117.8	124	53.5
3"	77	137.7	140	57.5
4"	96	154.5	159	63
5"	115	177	184	78
6"	134	202	208	95
8"	192	260	272	105

Check Valve with Single Disc VS Flanged End Check Valve

1. Material:

Check valve with single disc material can be CF8,CF8M,CF3M, flanged end check valve material can be C/I,D/I, WCB, Stainless Steel

2. Pressure:

Check valve with single pressure is 200WOG,800WOG,1000WOG,1500WOG,2000WOG.Flanged check valve pressure is Class125/150/300/600/900, PN10/PN16/PN25/PN40/PN63, 5K/10K/16K.

3. Range of Applications (Similarity):

Stardard: ANSI, BS, DIN

Sealing Material: Stainless steel (difference)

4. Installation (Difference):

Check valve with single disc need to be clamped with two flanges and the flanged end check valves shall be bolted to the flange.

Check Valve With Single Disc FAQs

Q How Does A Single Check Valve Work?

A single check valve to the connection. This prevents water in the flexible hose from flowing back into your water supply. Creating a one-way system based on water pressure.

Q What Happens If A Check Valve Is Installed Backwards?

Check valves need to be installed in accordance to their inlet and outlet, which is often shown as an arrow on the valve housing. As they only allow flow in one direction, if they are installed backwards, they will not work properly.

Why Is a Single Disc Wafer Check Valve Ideal for Water Treatment Applications?

Water treatment systems demand precision and reliability to maintain consistent flow and prevent contamination. The single disc wafer check valve excels in these applications due to its automatic backflow prevention capabilities. Designed to respond instantly to changes in fluid pressure, it ensures that water always flows in the correct direction, protecting pumps, filters, and pipelines from potential damage caused by reverse flow. The compact wafer design of the single disc check valve allows it to be easily integrated into existing pipelines without requiring additional space, making it ideal for retrofits and system expansions. Its lightweight construction reduces installation labor and costs while still maintaining high sealing performance, which is critical in water systems where even minor leaks can lead to contamination or water loss. For vertical installations in water treatment plants, the valve must be oriented with the flow entering from the bottom to ensure proper operation. This ensures the disc closes under pressure differences, effectively preventing backflow. The design also reduces the risk of water hammer, which is a common concern in high-flow water pipelines, helping to prolong pump and pipeline life. Constructed from corrosion-resistant materials such as stainless steel or coated carbon steel, the single disc wafer check valve withstands exposure to various chemicals used in water treatment. This durability ensures long-term reliability, minimizing downtime and maintenance costs. For industrial water treatment systems, selecting a high-quality valve from Ningjin Thriveon Valve Co., Ltd. provides both performance assurance and technical support for any operational challenges. Energy efficiency is another significant advantage. By reducing turbulence and flow resistance, the valve allows pumps to operate at optimal efficiency, saving energy and reducing operational costs. This feature is especially valuable in large-scale municipal or industrial water treatment plants where energy consumption is a critical factor. Maintenance is simplified thanks to the wafer design, which allows technicians to remove and inspect the valve without dismantling the pipeline. This convenience is essential in systems requiring strict hygiene and minimal downtime. For water treatment applications where continuous operation is mandatory, the single disc wafer check valve offers a reliable, cost-effective solution. Purchasing from Ningjin Thriveon Valve Co., Ltd. guarantees valves that meet international standards such as ASME, ISO, or API. Their expertise in high-quality check valves ensures that procurement teams worldwide receive durable and efficient products. Investing in a single disc check valve for water treatment systems ensures long-term operational reliability, energy efficiency, and system safety.

Why Are Single Disc Wafer Check Valves Preferred in Chemical Processing Plants?

Chemical processing plants rely on precise flow control to maintain safe and efficient operations. The single disc check valve prevents reverse flow of aggressive chemicals, protecting expensive pumps, reactors, and pipelines from damage. Its automatic closing mechanism ensures that fluids only flow in the intended direction, significantly reducing the risk of contamination or operational incidents. The single disc wafer check valve is designed for compact installation, fitting between flanges in space-restricted pipelines without compromising performance. This makes it ideal for both new chemical plant designs and retrofits of existing systems, ensuring reliable backflow protection in critical areas such as acid transfer, solvent handling, or high-temperature chemical reactions. Durable materials such as stainless steel or coated carbon steel provide resistance to corrosion, high temperatures, and aggressive chemicals. This construction guarantees long-term reliability, reduces maintenance costs, and ensures compliance with industrial safety standards. In chemical applications, a reliable check valve is essential for both process integrity and personnel safety. The valve’s quick-acting disc minimizes pressure surges and prevents water hammer, which is critical in delicate chemical processes. By maintaining stable flow and avoiding backflow, the valve contributes to energy efficiency and reduces operational stress on pumps and piping systems. Vertical or horizontal installation is supported, with proper flow orientation critical for optimal performance. Maintenance is simplified by the wafer design, allowing inspection or disc replacement without extensive system shutdowns. In chemical plants where downtime is costly, this feature is particularly advantageous. Choosing a single disc check valve from Ningjin Thriveon Valve Co., Ltd. ensures high-quality performance, international standard compliance, and technical support. For chemical processing facilities, this valve is a reliable, efficient, and safe choice, protecting both equipment and processes from backflow risks.

How Can Single Disc Check Valves Reduce Water Hammer in High-Flow Systems?

Water hammer can cause serious damage to pipelines and equipment. A single disc check valve minimizes water hammer by rapidly closing when reverse flow is detected, preventing pressure surges from propagating downstream. This protects pumps, fittings, and sensitive equipment, reducing maintenance costs and downtime. The wafer design of the single disc wafer check valve allows compact installation between flanges, reducing flow disturbance while maintaining high sealing performance. Its fast-acting disc responds to sudden pressure changes, ensuring stable operation in high-flow water or chemical pipelines. Durable materials provide long-term reliability even under aggressive conditions. Vertical and horizontal installations are supported, with proper flow orientation critical. Maintenance is simplified for quick inspections and disc replacements. By minimizing water hammer, energy losses, and turbulence, the valve improves system efficiency, prolongs equipment life, and reduces operational costs. Ningjin Thriveon Valve Co., Ltd. provides valves that meet international standards, ensuring reliability in high-flow industrial systems.