DIAPHRAGM VALVE STRAIGHT THROUGH TYPE 

Features:

Leflow’s Diaphragm valve is designed to handle media that are aggressive or contain suspended particles,It has following options:
1.Body: Weir type(A type) and Straight through type(KB type);
2.Body coating: Unlined, Many kinds of Rubber(Natural Rubber,EPDM and Butyl),
Many kinds of Fluorine plastic(PFA,PVDF,TFE and so on);
3.Diaphragm:Many kinds of Rubber(Natural Rubber,EPDM and Butyl),
Many kinds of Fluorine plastic(PFA,PTFE AND FEP);
4.Ends:Flanged or Screwed;
5.Operation: Manual,Pneumatic and Electric;
6.Testing: Lining layer check: BS6755 Electric spark detecting;
Body strength test:1.5 times rated working pressure;
Seat test:1.1 times rated working pressure.
7.Surface coating: All kinds of paint or Fusion Bonded Epoxy.

Diaphragm valve is a special valve and its main function is to control the flow of fluid and adjust the flow of fluid. Its core components include a diaphragm and a valve stem. The diaphragm is usually made of elastic and corrosion-resistant non-metallic materials such as rubber or plastic, and the valve stem is connected to the diaphragm. When the stem is raised and lowered, the diaphragm moves accordingly, changing the clearance between the diaphragm and the seat, thereby controlling the flow and regulation.
Here is how the diaphragm valve works:
When the diaphragm valve is closed, fluid enters the valve body through the inlet channel. At this point, the pressure on the valve cover causes the lower part of the diaphragm to fit tightly with the seat, creating a seal.When the stem rises, the diaphragm also rises, opening the valve; Instead, when the stem drops, the diaphragm drops, closing the valve.
By controlling the up and down movement of the valve stem, the opening of the valve can be adjusted to realize the flow control of the fluid.

The diaphragm valve is a special on/off valve and has following benefit:
1.The elastic cone components can avoid the inner leak;
2.The clipper-built interior channel can reduce the head loss;
3.It has no stuffing box,so it doesn’t leak from stem;
4.The stem and bonnet are separated by the middle diaphragm in order that both of them aren’t corroded by the medium;
5.The diaphragm is changeable and the maintenance cost is low;
6.The various lining materials are available as below chart.

As a leading valve manufacturer and exporter in China, LeFlow has been supplying high-quality valves for industrial and commercial applications for over 20 years. We offer competitive prices in the global market, focusing on diverse industries such as petroleum, chemicals, LNG, power, paper, water treatment, pharmacy, metallurgy, and construction. Our commitment to quality is demonstrated through a stringent quality control plan, supported by in-house inspection and testing facilities for chemical analysis and mechanical testing. Additionally, we excel in design and OEM services, capable of creating new valve functions or adapting existing models to meet specific working conditions.

Diaphragm valves are versatile components used in many industries for controlling fluid flow. Among the various diaphragm valve types, the straight-thru style diaphragm valves and the straight through diaphragm valve are notable for their efficient design, allowing fluid to pass directly through with minimal resistance. The straight through valve configuration is particularly useful in applications requiring a consistent, unobstructed flow. When selecting a valve diaphragm, it’s important to consider the specific needs of your system. Whether you need a diaphram valve for general purposes or a specialized diaphragm valve, these options offer reliable performance for various applications.

Rubber Series: Materials and scope of application of body lining

Rubber Series: Materials and scope of application of diaphragm

Fluorine Series: Materials and scope of application of body linings

Fluorine Series: Materials and scope of application of diaphragm