Development of China Diaphragm Valve | Diaphragm Valve Manufacturer

Advantages of Diaphragm Valve

The main advantage of a diaphragm valve is the almost full flow opening and hence the very low head loss. Diaphragm valves are good for controlling flow, normally they are used for compressed air, seawater, or freshwater and in a great number of other applications. Full flow also means less wear and tear compared to other valves, giving longer lifetimes and reduced need for maintenance. A diaphragm valve consists of a body, diaphragm, and bonnet and is operated either with a handwheel or with a pneumatic or electric actuator. Our diaphragm valves have built-in open/closed indicators, and a variety of options for coating, and can be delivered with different lining materials for example NBR, EPDM, or natural rubber. Diaphragm valves in cast iron are also featured with over-closure protection to compensate for variations in diaphragm and lining thickness. The diaphragm valves are tamper-proof to prevent adjustment by unauthorized personnel.

Characteristics of Pneumatic Diaphragm Valve

The biggest difference between the diaphragm and other valves is: to adopt the no filler letter structure, the rubber diaphragm can make the flow of corrosive medium and all drive parts n the fully isolated state, thus eliminating valve such shortcomings as run, leakage, drops, etc.
Because of the diaphragm valve’s smooth flow, flow resistance small so can acquire a larger flow.
Rubber-lined diaphragm valve of the body cavity surface have PTFE and other materials to choose from a variety of rubber so has excellent corrosion resistance characteristic.
This valve is combined with the body, bonnet, disc, stem, diaphragm, and other valve parts.
The opening and closing which achieved by rotating the hand wheel and in the top cover marked can see the valve in the closed or opened position with a display color that indicates valve opening and closing. When you placed the hand wheel clockwise, the hand wheel is slow down, and the disc drive with the decline of the diaphragm which makes pathways truncation. Otherwise, the valve is open, the color is then revealed.

Development of Diaphragm Valve In China

Diaphragm Valve is to use the diaphragm as the opening and closing piece to close the flow channel, cut off the flow, and the valve body cavity and valve cover cavity separated by the cut-off Valve. The utility model has the advantages of simple structure, good sealing, antiseptic performance, and small fluid resistance, and has been widely used in food, medicine, pharmaceutical, and other industries.

The diaphragm Valve plays an important role in food production and processing

The diaphragm valve structure is different from the General Valve, is a new type of valve, is a special form of cut-off Valve, its opening, and the closing piece is a piece of soft material made of the diaphragm, the valve body cavity, and the valve cover cavity and drive parts separate, is now widely used in various fields.

Diaphragm Valve Manufacturers and Suppliers

Diaphragm valves are flow control devices that offer precision regulation to liquid, gas, and semi-solid slurry flows alike. Diaphragm valves regulate the transport of process streams by sealing process flow lines, either partially or fully, with a flexible membrane that is stretched by an actuator. They differ from other control valves, like pinch valves, ball valves, and butterfly valves, which use different methods to regulate gas and liquid.

Thermoplastic Valves, Inc.

Manufacturer of flange-type diaphragm valves made from PTFE, EPDM, PVC, and thermoplastic materials. Specifications include 150 psi working pressure. Suitable for industrial applications. Serves mining, fertilization, transportation, irrigation, oil, pharmaceutical, and other industries.

Century Instrument Co.

Manufacturer of automatic control valves, diaphragm valves & plastic diaphragm valves. Valve types include diaphragm control & relief valves, & automatic diaphragm valves. Diaphragm valves are available in 7 sizes & can handle operating air pressures up to 200 psi. Automatic diaphragm control valve bodies can be lined with glass, rubber, or plastic. Applications of diaphragm valves include use for hard-to-handle & corrosive services. Capabilities include longer strokes, lower air consumption, adjustability, & adaptability.

Erdmann Corp.

Stocking distributor of diaphragm valves. Specifications vary depending upon types and include 1/4 in. to 14 in. sizes and vacuum pressure up to 230 psi. Various features include bonnet isolation, streamlined fluid passage, positive leak tight closures, no packing glands, in-line maintenance, adjustable travel stops, bronze bushings, and floating tube nuts. Materials include cast iron, ductile iron, cast steel, stainless steel, bronze, alloy, Hastelloy®, and Monel®.

IPEX

Manufacturer of diaphragm valves made from polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), polypropylene (PP), and polyvinylidene fluoride (PVDF) material. Available with spigot, socket, threaded, and flanged end connections. Features include compact, precise flow control and manually or pneumatically actuated. Suitable for use in high purity applications. Ball, check, butterfly, vent, and specialty valves are also provided. Serves the agricultural, civil, irrigation, mining, shipbuilding, wastewater treatment, chemical, oil, and gas industries.

Plast-O-Matic Valves, Inc.

Manufacturer of standard & custom diaphragm valves for high purity processes such as deionized water & ultra-harsh chemicals not compatible with elastomers. Valves feature a PTFE diaphragm with no wetted elastomers or metals. Available in pipe sizes ranging from 1/4 in. to 1-1/2 in. with threaded, socketed & spigot ends. Materials include Geon®, natural unpigmented virgin polypropylene, Kynar® & PTFE. Services include product innovation, engineering, precision manufacturing, pressure, flow & corrosion-resistant plastic piping, quality testing & technical assistance. RoHS compliant.

ZECO Valve

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