Valves
- Accessories
  - Accessories
    
    A large range of accessories is available to round off the GEMÜ product range. These include stroke limiters and optical position indicators for valves, assembly accessories, mounting kits for position indicators and controllers, control air adapters and NAMUR mounting brackets, plugs and cable connectors, travel sensors for controllers and many other items.
- Actuators
  - Actuators
    
    Alongside valve assemblies, GEMÜ also offers linear and quarter-turn actuators for adaptation to valve bodies from other manufacturers. These allow, for example, high-quality valve actuators to be fitted to many butterfly and ball valve bodies using connection flanges according to ISO 5211. There is also a suitable actuator in the range for globe and diaphragm valves.
- Ball valves
  - Ball valves
    
    GEMÜ ball valves can be used in many different applications. However, they are primarily used in industrial processes, in the fields of water supply and water/waste water treatment. In addition to this, GEMÜ plastic ball valves are successfully used in the chemical industry. Alongside valves with a straight through body (2/2-way valve), T valves (3/2-way valve) are also available. Accessories, such as seal adjusters and stroke limiters, proximity switches, optical position indicators and electrical position indicators, round off the ball valve portfolio.
- Butterfly valves
  - Butterfly valves
    
    GEMÜ butterfly valves are primarily used in industrial processes and the chemical industry, as well as the fields of water supply and water/waste water treatment. The concentric design is available as standard. However, the double-eccentric and triple-eccentric shut-off valves are also available for projects on request. Depending on the application, appropriate accessories are also available. The use of matched control components such as positioners and process controllers allows GEMÜ butterfly valves to also be used in control circuits.
- Check valves
  - Check valves
    
    Check valves are used in virtually all types of plants, as well as numerous processes and applications in all industries. GEMÜ offers various types of check valves.
- Diaphragm seat valves
  - Diaphragm seat valves
    
    Diaphragm globe valves from GEMÜ are suitable both for opening/closing applications and for control and dosing applications. The PTFE diaphragms used reliably isolate the medium from the actuator. The valves are easy to clean and, in comparison with valves with bellows, have significantly reduced deadlegs. A pretensioning element included in the actuator guarantees external leak tightness, even with temperature fluctuations and settling of the plastic parts. The valves are available both with straight through bodies and as multi-port valve block systems.
- Diaphragm valves
  - Diaphragm valves
    
    As they are available with such a large number of body and seal materials, GEMÜ diaphragm valves are used successfully in many different applications. Depending on the application, various actuation types, body materials and connections are available.
- Fittings and hoses
  - Fittings and hoses
    
    GEMÜ offers over 100 different fitting options for the production of semiconductors, LEDs, high-purity media, microchips and solar cells with the most common connections in the market. The product range has been expanded to include high-quality tubes for applications with high-purity media.
- Pilot valves
  - Pilot valves
    
    GEMÜ supplies pilot valves for pneumatically operated valves, cylinders and other process components. These stand out thanks to their robust and durable design and precise air dosing.
- Process solenoid valves
  - Process solenoid valves
    
    Solenoid valves are designed for fast cycle duties and are particularly suitable for dosing applications. They are primarily used in the widest range of general industrial applications.
- Seat valves
  - Seat valves
    
    Globe valves are ideal for fast cycle duties, high temperatures and control applications. Although they are often used for steam control and in the field of water/waste water treatment, they can handle the most diverse of applications in industrial processes, and also in sterile and hygienic applications in the pharmaceutical, food and biotechnology industries. GEMÜ offers globe valves in both straight seat and angle seat designs. Depending on the valve type, both 2/2-way bodies and 3/2-way bodies are available.
- Single-use valves/components
  - Single-use valves/components
    
    Single-use valves are used if it is crucial to avoid cross contamination or if a simplified plant design is required. The GEMÜ product range comprises single-use diaphragm valves with manual or pneumatic actuators. The single-use valve body is disconnected from the actuator and disposed of after it is used once. In contrast, the actuator remains in the system for multiple use.
- Strainer
  - Strainer
    
    Strainers are used to filter out contaminants in fluid flows. Depending on the flowing medium, different mesh sizes and materials are available for the filter insert.
- Tools
  - Tools
    
    Not every installation and repair step can be carried out with standard tools. However, so that this can be done quickly and simply, GEMÜ provides a selection of special tools for valve assembly or wearing part replacements, for example.
Measurement and control engineering
- Accessories
  - Accessories
    
    A large range of accessories is available to round off the GEMÜ product range. These include stroke limiters and optical position indicators for valves, assembly accessories, mounting kits for position indicators and controllers, control air adapters and NAMUR mounting brackets, plugs and cable connectors, travel sensors for controllers and many other items.
- Fittings and hoses
  - Fittings and hoses
    
    GEMÜ offers over 100 different fitting options for the production of semiconductors, LEDs, high-purity media, microchips and solar cells with the most common connections in the market. The product range has been expanded to include high-quality tubes for applications with high-purity media.
- Flow meters
  - Flow meters
    
    GEMÜ offers various valve designs for flow measurement systems:
- Position and process controllers
  - Position and process controllers
    
    GEMÜ's product range for process automation of valves includes 3-point controllers to control the position of motorized valves and electro-pneumatic positioners for pneumatic valves with quarter-turn or linear actuators.
- Position feedback devices and valve connections
  - Position feedback devices and valve connections
    
    Pneumatically operated quarter-turn valves and valves with a linear actuator are often used in conjunction with electrical position indicators. Depending on the device type, microswitches or proximity switches are used. They enable reliable end position feedback and can be equipped with a fieldbus connection upon request (e.g. AS-Interface, DeviceNet, etc.).
- Pressure control valves
  - Pressure control valves
    
    GEMÜ pressure control valves are used in plants that require a constant operating pressure or system pressure. They control the upper pressure limits, prevent pressure peaks and/or balance out pressure fluctuations. Depending on the function, three different designs are available.
- Temperature measuring devices & pressure measuring devices
  - Temperature measuring devices & pressure measuring devices
Spares
- Diaphragms
  - Diaphragms
    
    A diaphragm is the central sealing element in a diaphragm valve. Only the diaphragm and the valve body are in direct contact with the flowing medium. In addition, it ensures external hermetic sealing. Diaphragm production takes place within the GEMÜ group and with certified suppliers. Distinctions are made between soft elastomer and PTFE diaphragms. Diaphragms for weir-type diaphragm valves have the tried and tested GEMÜ seal system up to a nominal size of DN 100.
- Replacement actuators for diaphragm valves
  - Replacement actuators for diaphragm valves
    
    For fast and simple replacement of actuators, GEMÜ permanently has an appropriate selection of different replacement actuators in stock.
- Replacement actuators for globe valves
  - Replacement actuators for globe valves
    
    For fast and simple replacement of actuators, GEMÜ permanently has an appropriate selection of different replacement actuators in stock.
- Spare parts kits for globe valves
  - Spare parts kits for globe valves
    
    All valves are subject to a certain degree of wear during their lifetime. For the replacement of these components or for repair purposes, the range includes various spare parts kits.

R471 50W664A6TL1 SU15GC0

Butterfly valve, pneumatic NC

Item number:		88852826
Description

Type	R471	Butterfly valve, double-eccentric, pneumatically operated, long service life, low friction thanks to direct separation of seat and disc, continuous and blow-out proof shaft, with antistatic unit and low-maintenance spindle seal, can be readjusted
DN	50	DN 50
Body configuration	W	Intermediate flange version (Wafer), length FTF API609 table B, EN 558 series 108, EN 558 series 109
Operating pressure	6	40 bar
Connection type	6	PN 40 / Flansch EN 1092, Baulänge FTF EN 558 Reihe 20
Body material	4	1.4408 (SS316), ASTM A351 CF8M
Disc material	A	1.4408 / ASTM A351 / CF8M
Shaft material	6	1.4542, ASTM 564 630
Liner material	T	TFM 1600 (FDA certification)
Liner fixing	L	Liner loose
Control function	1	Normally closed (NC)
Actuator version	SU15GC	Actuator, pneumatic, single acting, clockwise rotation, spring closing, SC0150U 5F05/07 S17
Actuator particulars	0	General industrial version (ASR/ASL/ADA/GSR/GSL/GDR), Version A (SC/SO/DR/DL), body aluminum, anodized coating 25-35μm, end caps aluminum, powder-coated, shaft C-steel + ENP, screws A2
Shaft length	15	15 mm
This article is listed as a Dual-Use-good according to Regulation EU 2021/821 under Control list No. 2B350g. If these goods are supplied to countries outside the EU, the relevant export restrictions apply.

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