Diaphragm valve

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Diaphragm valves (or membrane valves) consists of a Categories [ ] There are two main categories of diaphragm valves: one type seals over a " Diaphragm valves can be manual or automated. Automated diaphragm valves may use pneumatic, hydraulic or electric actuators along with accessories such as solenoid valves, limit switches and positioners. In addition to the well known, two way shut off or throttling diaphragm valve, other types include: Three way zero deadleg valve, Valve body [ ] Many diaphragm valve body dimensions follow the Manufacturers Standardization Society MSS SP-88 Actuators [ ] Diaphragm valves can be controlled by various types of Body materials [ ] • Unlined or Rubber Lined Type: • NR/ • NBR/Nitrile/Buna-N • • • • SI/ • • Fluorine Plastic Type: • FEP, with EPDM backing • PTFE, with EPDM backing • PFA, with EPDM backing Applications [ ] Diaphragm Valves are ideally suited for: • Corrosive applications, where the body and diaphragm materials can be chosen for chemical compatibility. (E.G. Acids, Bases etc.) • Abrasive applications, where the body lining can be designed to withstand abrasion and the diaphragm can be easily replaced once worn out • Solids entrained liquids, since the diaphragm can seal around any entrained solids and provide positive seal • Slurries, since the diaphragm can seal around entrained solids and provide positive seal Markets [ ] Diaphragm valves have many applications in the following markets:

• Afrika-Borwa English • All English • Australia English • Belgique Français • Belgique Nederlands • Brasil Português brasileiro • Canada English • Canada Français • Danmark Dansk • Deutschland Deutsch • España Español • France Français • India English • Italia Italiano • México Español • Nederland Nederlands • Norge Norsk • Portugal Português • Schweiz Deutsch • Schweiz English • Schweiz Français • Schweiz Italiano • Suomi Suomi • Sverige Svenska • United Kingdom English • United States English • Éire English • Österreich Deutsch • Росси́я Русский • 日本 日本語 • 中华人民共和国 漢語 Diaphragm valve: Area of application and industrial sectors As they are available with such a large number of body and seal materials, GEMÜ diaphragm valves are used successfully in many different applications. Use the As a result of different diaphragm materials and due to the surface quality of the valve body being maintained down to 0.25 µm, GEMÜ valves can be used in numerous sterile applications. The GEMÜ sealing system ensures that there is hermetic separation between medium and actuator. Single-use diaphragm valves comprise a stainless steel actuator and a gamma-sterilizable diaphragm valve body. The PP body with TPE diaphragm fulfils the purity requirements of the pharmaceutical industry as per USP 85 and USP 788. GEMÜ metal diaphragm valves are available in a weir-type version and in a full bore version and, because they are insensitive to particulate media, they are suitable for numerous industria...

You are using an outdated browser. Unfortunately, this does not allow us to guarantee that our website can be used without any errors. The use of outdated browsers often leads to low speed and security problems, too. We recommend that you install a new version or an alternative browser to get the full functionality of our website. In the pure world of hygienic, diaphragm valves are essential for safe and reliable production. In order to ensure sterile and non-contaminated products it is important to rely on high quality diaphragm valves designed according to your use case. That is why Bürkert offers a broad range of diaphragm valve solutions ( Increased diaphragm lifetimes and less energy consumption Bürkert diaphragm valves support you achieving your economic targets. Due to optimized geometries in our forged bodies the flow coefficient is up to 35% higher than the industry average (see Kv values in illustration). This leads to less pressure needed to push liquids through the valves and to an increased diaphragm lifetime. Furthermore, it makes smaller pumps with less energy consumption sufficient. So increase your flow with Bürkert’s diaphragm and save operation costs.

Alfa Laval diaphragm valves are aseptic inline valves to shut off, divert and/or regulate the fluid flow through hygienic, high-purity and aseptic processing lines. Manually or pneumatically operated, these compact, lightweight valves are easy to configure to suit virtually any process requirement, including sterile and ultra-hygienic processes for biotech and pharmaceutical applications. Proven, high-performance diaphragm valves for demanding aseptic processes • Ensure high-quality, contaminant-free products due to hermetic design and aseptic diaphragm technology • Save time and money with compact, lightweight, easy-to-install valves from two-way to customized valve clusters • Increase performance with purpose-built valves with minimal deadlegs and maximum drainability and cleanability • Increase performance and reliability whilst reducing downtime due to optimized valves and the use of high-grade and long-lasting materials • Ease qualification and change control procedures with Alfa Laval Q-doc documentation package for full traceability of all product contact parts Get contaminant-free performance across all the hygienic and high-purity industries, including the food, personal care, biotech and pharmaceutical industries with Alfa Laval diaphragm valves. Design purpose-built two-way or multiport diaphragm valves to meet your exact requirements. Selection is simple, flexible and easy. All high-grade, ATEX-compliant components are compatible and engineered to safeguard pro...

Swagelok ® Valves From the far reaches of space to the bottom of the ocean and everywhere in between, trust leak-tight, long-lasting Swagelok valves in your critical applications. Known for durability derived from carefully controlled manufacturing practices, our valves perform reliably even after years of use in demanding applications. • • • Valves Bleed Valves: Working pressures up to 10 000 psig (689 bar); Temperatures up to 850°F (454°C); 316 stainless steel, carbon steel, alloy 400, or alloy C-276 materials. Purge Valves: Working pressures up to 4000 psig (275 bar); Temperatures up to 600°F (315°C); 316 stainless steel, brass, or carbon steel materials Features: 316 stainless steel construction; Temperatures up 1000°F (537°C); Medium-pressure (MP) fittings, Size range—1/4 to to 1 in., Pressure rating—up to 20 000 psig (1378 bar); High-pressure (HP) fittings, Size range—1/4 to 9/16 in., Pressure rating—up to 60 000 psig (4134 bar); NACE® MR0175/ISO15156 compliance available Features: Compact, packless valve switches flow from one line to another. Torlon® stem guide ensures proper alignment for consistent shutoff performance. Manual and spring-return and double-acting pneumatic actuators are available. End connections include 1/4 in. Swagelok® VCR® metal gasket face seal fittings and 1/4 in. Swagelok tube fittings. Valves Swagelok offers one-piece instrumentation ball valves, three-piece process ball valves, medium-pressure ball valves, multipurpose ball valves, trunnio...

What is a Diaphragm Valve Diaphragm Valve is glandless valve that consist of a valve body, a flexible elastomeric diaphragm, and a seat (Weir/Saddle) upon which the diaphragm closes the valve. Diaphragm Valve is designed for leak-proof control of abrasive and corrosive liquids, suspensions, slurries, and pulps. In addition, diaphragm valves provide an external seal, therefore all moving parts are fully isolated from the wetted parts and the media being conveyed. These valves are ideal for applications that require tight shut-off, accurate closure and is effective in gas, liquid, suspended solids and slurry applications. Diaphragm valve is also ideal for acidic, corrosive and abrasive applications with the proper materials and linings. Diaphragm valves are typically available in two configurations, straight-thru Valve and weir type. Straight-Thru Diaphragm Valve This type of diaphragm valve is also often referred to as full bore diaphragm valve. In this design, the diaphragm seals over a seat. Due to their unique design, these valves provide full flow capability with minimum pressure drop. These valves are typically applied for on-off service. Tru-Tech’s straight-thru diaphragm valve is available in two configurations, namely Tru-Flow compatible with MSS-SP88 and Maxi-Flow compatible with ANSI B16.10. • • Enhanced Weir Type In this type of diaphragm valve, the diaphragm seals against a Weir or Saddle. These valves are typically applied in throttling control applications. Th...

Diaphragm valves are an essential part of many industrial processes, and are commonly used in applications where precise control over fluid flow is required. These valves consist of a flexible diaphragm that separates the valve body from the fluid being controlled and are available in a variety of materials, sizes, and configurations. In this article, we will discuss the basic principles of diaphragm valves, their construction and working, types and applications, advantages and disadvantages, and maintenance requirements. Construction and Working Diaphragm valves consist of a valve body, which houses a flexible diaphragm, and a bonnet, which secures the diaphragm to the valve body. The diaphragm is usually made of rubber, neoprene, or other elastomers, and is designed to be flexible enough to deform under pressure, allowing fluid to pass through the valve. When the valve is closed, the diaphragm seals the valve body, preventing fluid from passing through. The operation of a diaphragm valve is controlled by a mechanism that presses the diaphragm against the valve body, either opening or closing the valve. The most common type of mechanism used in diaphragm valves is the handwheel or actuator. The handwheel is connected to a stem, which is attached to the diaphragm, and when turned, moves the diaphragm up or down, opening or closing the valve. The actuator is a more complex mechanism that is controlled by an electrical signal or pneumatic pressure and is used in automated co...

Fittings • • Tube Fittings and Adapters • • • • • • • • • • • • • • • • • Cone and Thread Fittings • • • • • • • Dielectric Fittings • • • Flange Adapters • • • • • • Medium-Pressure Tube Fittings • • • • • • • • • Pipe Fittings • • • • • • • • • Sanitary Fittings • • • Snubber Fittings • • • Ultra-Torr Vacuum Fittings • • • • • • VCO® O-Ring Face Seal Fittings • • • • • • • • VCR® Metal Gasket Face Seal Fittings • • • • • • • • • • • • • • Weld Fittings • • • • • • • Valves Valves • • Atomic Layer Deposition (ALD) Valves • • • • • Ball and Quarter-Turn Plug Valves • • • • • • • • • • • • • Bellows-Sealed Valves • • • • • • • • • • • Check Valves • • • • • • • • • Diaphragm-Sealed Valves • • • • • • • • • • • • Manifolds • • • • • • • Needle and Metering Valves • • • • • • • • • • • • • • • • Quick Connects • • • • • • • Relief Valves • • • • • • • Regulators Swagelok ® Diaphragm-Sealed Valves Diaphragm-sealed valves minimize entrapment areas and facilitate purging with a fully swept flow path to improve system efficiency while providing effective flow shutoff. A variety of sizes, materials, and configurations, including atomic layer deposition, thermal immersion, and springless, meet the system requirements of high-purity and ultrahigh-purity applications. • • • • Diaphragm-Sealed Valves Diaphragm-Sealed Valves Our diaphragm-sealed valves are designed in a wide variety of sizes, materials, and configurations to meet the needs of high-purity and ultrahigh-purity (UHP) appl...