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The System for Highly Demanding Applications
Superior purity, outstanding chemical and temperature resistance
このカタログについて
ドキュメント名 | SYGEF(PVDF) - Product Range |
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ドキュメント種別 | 製品カタログ |
ファイルサイズ | 11.2Mb |
取り扱い企業 | ジョージフィッシャー株式会社 (この企業の取り扱いカタログ一覧) |
この企業の関連カタログ
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Page1
GF Piping Systems
Product Range International 2016
PVDF
SYGEF
Page2
Introduction
The best choice
for you
Corrosion and chemical resistant
system solutions
Georg Fischer
Georg Fischer focuses on three core businesses: • Microelectronics
GF Piping Systems, GF Automotive and GF Machining • Marine
Solutions. The industrial corporation founded in 1802 • Water & Gas Utilities
headquarters in Switzerland and operates approximately • Water Treatment
130 companies with more than 14 000 employees across 30
countries.
GF Piping Systems is a leading supplier of plastic and metal Global presence
piping systems with global market presence. For the Our global presence ensures customer proximity worldwide.
treatment and distribution of water and chemicals, as well Sales companies in over 26 countries and representatives in
as the safe transport of liquids and gases in industry, we another 80 countries provide customer service around the
have the corresponding jointing technologies, fittings, clock. With 48 production sites in Europe, Asia and the USA
valves, automation products and pipes in our portfolio. we are close to our customers and comply with local
standards. A modern logistics concept with local distribution
centers ensures highest product availability and short
delivery times. GF Piping Systems specialists are always
close by.
Complete solutions provider
Our extensive product range represents a unique form of
product and competence bundling. With over 60 000
products, allied with a broad range of services, we offer
individual and comprehensive system solutions for a
variety of industrial applications. Our automation offering
perfectly fits into our complete system approach and is thus
GF Piping Systems headquarters in Schaffhausen, Switzerland. an integral part of our portfolio. Having the profitability of the
project in focus, we optimize processes and applications that
are integrated into the whole system.
Our market segments Continually setting standards in the market, we directly
Being a strong partner, GF Piping Systems supports its provide our customers with technological advantages. Due
customers in every phase of the project. No matter which to our worldwide network customers benefit directly from
processes and applications are planned in the following over 50 years of experience in plastics.
market segments:
• Building Technology From start to finish, we support our customers as a
• Chemical Process Industry competent, reliable and experienced partner, actively
• Energy contributing the know-how of an industrial company that has
• Food & Beverage / Cooling been successful in the market for over 200 years.
Page3
The system
The System for
Highly Demanding
Applications
Superior purity, outstanding chemical and temperature resistance
We are dedicated to designing, manufacturing and marketing piping systems
for the safe and secure treatment or conveyance of diff erent qualities of water,
liquids and chemicals. Customers rely on our 40+ years experience in Fluoro-
polymers, our state-of-the-art production technology and our global presence
with a worldwide service and training off ering. In close collaboration with
end-customers and based on their high requirements, GF Piping Systems
introduced the SYGEF family – specifi ed PVDF system based on certifi ed raw
material. SYGEF is the optimal choice for highly demanding applications on the
industrial fi eld.
Individuality – From the planning stage to installation
SYGEF Standard (PVDF)
The single-bagged and reliable transport solution for
chemical and water applications – even at high tempera-
tures. Defi ned manufacturing conditions and a high per-
formance raw material ensure the suitability for harsh
environments as encountered in disinfection and chemi-
cal transport.
SYGEF Plus (PVDF HP) Pipes Fittings Valves
The double-bagged, high purity (HP) piping system off ers
additional opportunities for highly demanding applica- Quality control and assurance
tions like conveying hot ultrapure water (HUPW) for mi- SYGEF systems warrant 100 % traceability through our com-
croelectronic industries. By manufacturing, cleaning and puter aided quality production, packaging and labeling from
packing under cleanroom conditions up to ISO class 5 raw material to the end product.
(100), SYGEF Plus achieves an excellent surface fi nish,
superior leach out characteristics and stringent particle Temperature and chemical resistance
control combined with high reliability and product life- SYGEF systems are reliable for diffi cult applications with
time. high temperatures and aggressive chemicals. Through our
service team we off er individual support to match your ma-
terial requirements.
Page4
Main benefi ts
Complete system range
• One-stop-shopping
• Including pipes, fi ttings, valves and automation
• Proven jointing technologies
• Worldwide service: customizing, machine rental
pool, training and sales support
• System lifetime warranty*
Total plastic solution
• Outstanding temperature range
• Excellent chemical resistance and purity
• Extremely smooth surface fi nish
• Rouging- and corrosion-free
• Excellent abrasion resistance
• UV and weather resistant
• No electric conductivity
• Low thermal conductivity
High purity application
• Virgin raw materials
• No additives, stabilizers or pigments
• Outstanding leach-out values
• Fully controlled clean room production
• 100 % traceability and audited
by an independent external company
Technical documentation
Our extensive expertise of more than 50 years is fully docu-
mented in detail in our technical manuals, planning funda-
mentals and application guides.
Training courses and on-site training
We off er a wide range of training courses that provide par-
ticipants an excellent opportunity to gain confi dence in work-
ing with our products and proven jointing technologies.
Automation Jointing technology Customizing and training
Online and mobile calculation tools
Technical support Our numerous online and mobile calculation tools in many
For any successful installation a good technical support is diff erent languages support our customers in confi guring
the key factor. A team of experts is available for individual and commissioning automation products.
assistance all around the world.
CAD library
Customizing The extensive CAD library is the most frequently used
The focus of our worldwide located customizing teams is planning tool. Our online database comprises over 30 000
manufacturing custom parts for special systems. Standard- drawings as well as technical data for our customers. Many
ized processes guarantee the highest level of quality. formats are available.
* Detailed information regarding the warranty can be found under: www.gfps.com – Planning Fundamentals
Page5
Completely controlled process
The SYGEF
High Purity Chain
2 ManufacturingManufacturing of the SYGEF Plus prod- 4
ucts is done in a clean room class 7
(10 000) or better using completely con-
trolled processes. During the complete
production process the inner surface
area of the pipes, fi ttings and valves are
in contact with air up to class 5 (100).
1Raw material Quality controlSYGEF starts the journey with the high- 3 A very detailed and unique QS-
est available quality raw materials. Our system has been implemented to
suppliers provide analytical proof of ensure the highest level of
compliance with the highest specifi ca- quality. It is directly linked to the
tions for every shipment. Once the raw manufacturing of the complete
materials enter our plant, GF performs SYGEF range and includes a
extensive incoming goods inspection. 100 % inspection of every prod-
This assures that only raw materials ful- uct to ensure maximum perfor-
fi lling the strict requirements are re- mance including visual inspec-
leased for production. tion, valve packaging and valve
seat-tests.
Page6
The high purity chain Manufacturing a product that achieves the lowest possible levels of particle contamination, TOC, anionic and cationic
is made up of six links. contamination, ultimate surface fi nish is the result of the rel-
evant links. But it does not stop here. When the
Each one plays its product leaves our state-of-the-art warehouse it is delivered
important role to you in protective packaging.
Finally the installation is supported by the most advanced
and established welding technology in existence. This
technology combined with years of installation training
experience make the most of the product when it is
installed.
4 Cleaning & packing Installation & Highest purity through consistent 6 services
cleaning of all SYGEF Plus products is
With broad selection of system specifi c
achieved in clean rooms up to class 5
state-of-the-art welding equipment GF is
(100), using 18MΩ pure water and spe-
off ering proprietary IR welding technolo-
cial cleaning devices. All products are
gy up to d450mm. Enhanced by industry
packaged under selected and strictly
leading weld bead inspection the highest
monitored process conditions to avoid
quality and most reliable system is en-
contamination. Pipes are capped and
sured. Project support including design,
all SYGEF Plus components are double
installation training and worldwide lo-
bagged with a high quality, certifi ed
cated service centers completing
clean bagging material.
the high purity chain.
5 LogisticsSYGEF products are stored in a sepa-
rate warehouse for pipes, fi ttings and
valves with distribution centers located
worldwide. To avoid damage of SYGEF
pipes GF has designed special wooden
boxes for storage and transportation.
This ensures that the highest possible
quality and safety during transportation
to the customer is ensured.
Page7
High tech factory Ettenheim / Germany
SYGEF Cleanroom
Production
All SYGEF components are
manufactured in the world’s
largest cleanroom factory
for fl uoropolymer products
in Ettenheim
GF Piping Systems played a major role in establishing the relevant
standards SEMI F40, F48 and F57 for polymer component testing. Due
to long experience and continuous improvements SYGEF Plus pipes,
fi ttings and valves are exceeding these requirements to increase our
customers’ yield. SYGEF Plus products are strictly fulfi lling the strong
requirements of the ITRS* roadmap in order to be prepared for upcom-
ing, even more demanding processes in the future.
Fully controlled environment Surface quality
The SYGEF production area includes 5 600m2 cleanroom: Smooth surfaces are achieved due to special equipment de-
4 000m2 class 7 (10 000), 1 000m2 class 6 (1 000) and 600m2 sign, proper tooling material’s selection, mirror fi nish sur-
class 5 (100) in operation. All cleanrooms are continuously face of inner cores and preventive maintenance schedule.
monitored and audited internally and by external companies. Thereby for all SYGEF Plus products the inner surface
The microbiological and specifi ed particle measurements roughness according SEMI F57 is surpassed.
are fully documented with a unique quality assurance (QA)
system.
R Profi l Filter DIN 4768 (RC) Le=0.800 mm
Ultrapure water plant 2.0
Cleaning and rinsing of components with water of impecca-
ble quality assures a constantly high level of cleanliness. 0.0
(μm)
SYGEF Plus products are subject to regular leach-out con-
-2.0
trols. Elementary system impurities like metals, anions and
Taster T1E Lt = 4.80 mm 4.80
TOC** are constantly monitored to exceed SEMI F57 require-
ments to warrant the highest possible system performance
Inner surface roughness measured at a SYGEF Plus T90° equal d250
in use. SDR33 / PN10
Page8
Process expertise Safe and reliable system
Operating staff has in-depth process knowledge and over 40 Quality control is an integral part in every step of the high
years of experience in manufacturing products under strictly purity chain. Therefore each SYGEF Plus component is 100 %
controlled cleanroom conditions. With regular internal train- visually inspected, including overall cleanliness, surface ap-
ings we ensure that our production team keeps always the pearance and imperfections in accordance to internal speci-
highest performance and has the latest insights. All the in- fi cations.
jection molding machines and extrusion lines are developed All mechanical testing takes place in matchless Swiss feder-
by using the latest innovations and technologies. ally accredited lab facility and external certifi cated labs. To-
gether with unsurpassed installation equipment GF Piping
Quality Assurance Systems is superior regarding ovality, internal stress level
The safe delivery to jobsite and traceability of the fi nished and warpage. These key factors are able to infl uence the
product back to the raw material batch are ensured through weld strength which leads to a longer system lifetime and a
completely controlled processes. All relevant data are ar- higher safety.
chived in an internal QA database and electronically avail-
able for statistical researches.
* ITRS: International Technology Roadmap for Semiconductors
** TOC: Total Organic Carbon
Page9
System range
More Than a System
With a constant focus on maximum reliability and safety the SYGEF system assures a sustained
high level of product quality and outstanding performance for high-end applications. By using
certifi ed and completely controlled manufacturing processes the SYGEF products are manufac-
tured according to all relevant specifi cations and these procedures are regularly audited and
evaluated to achieve continuous improvement. Our customers can be assured that their needs are
met or exceeded and that the products comply with all necessary standards.
SYGEF Standard and SYGEF Plus system range
Products d
DN
SDR PN
21 16
Pipes
33 10
Socket fusion fi ttings 16
Butt fusion fi ttings 21 16
(IR and BCF compatible) 33 10
16
Ball valves
10
16 upon request
Diaphragm valves
10
Butterfl y valves 10
16
Check valves
10
Pressure regulating valves 10
Ventilating- and bleed valves 16
Automation
Flanges
Flange seal
Pipe clips
IR fusion machine
BCF fusion machine
Butt fusion machine*
Socket fusion machine
SYGEF Standard SYGEF Plus * Technically possible but not recommended for SYGEF Standard
10 16
15 20
20 25
25 32
32 40
40 50
50 63
65 75
80 90
100 110
100 125
125 140
150 160
200 200
200 225
250 250
250 280
300 315
350 355
400 400
450 450
Page10
System specifi cations
Standards:
SYGEF Standard SYGEF Plus
Material PVDF virgin High Purity PVDF (PVDF-HP)
Color opaque opaque
Density ~1.78 g / cm3 (EN ISO 1183) ~1.78 g / cm3 (EN ISO 1183)
Thermal expansion coeffi cient 0.12–0.18 mm / m K (DIN 53752) 0.12–0.18 mm / m K (DIN 53752)
Thermal conductivity at 23 °C 0.19 W / m K (EN 12664) 0.19 W / m K (EN 12664)
Yield stress at 23 °C > 50 N / mm2 (EN ISO 527) > 50 N / mm2 (EN ISO 527)
Tensile E-modul at 23 °C > 1 700 N / mm2 (EN ISO 527/ASTM D790) ≥ 1 700 N / mm2 (ISO 527/ASTM D790)
Charpy notched impact strength at 23 °C ≥ 8 kJ / m2 (EN ISO 179) ≥ 8 kJ / m2 (EN ISO 179)
Dimensions d16–d315 in accordance to ISO 10931 d20–d450 in accordance to ISO 10931
Temperature rating from -20 °C to 140 °C (-4 °F to 284 °F)
Production - Pipes: extruded - Pipes: extruded
- Fittings: injection moulded / machined - Fittings / Valves: injection moulded /
- Valves: injection moulded (additional oil machined
free treated and paint compatible / silicon - Produced under clean room class
free) 7 (10 000) conditions. Subsequent
assembling, quality inspection and
cleaning is carried out using 18 MΩ pure
water under clean room class 5-6
(100 -1 000) conditions
Surface fi nish Inner surface Ra < 0.5 μm (20μin) Inner surface (PN10/ SDR33):
Compliant to Semi F57 for injection moulded and extruded d ≤ 225 Ra ≤ 0.2 µm (8µin)
components d = 250 Ra ≤ 0.3 µm (12µin)
d280–315 Ra ≤ 0.4 µm (16µin)
d355–450 Ra ≤ 0.65 µm (26µin)
for injection moulded and extruded components
Internal stress Pipes: ≤ 2.5 N / mm2; stress relieved by thermal annealing during manufacturing
Material and product approvals DIBt SEMI F57
FM-4910 listed cleanroom material FM-4910 listed cleanroom material
FDA CFR 21 177.2510 DIBt
USP 25 class VI (physiological non-toxic) FDA CFR 21 177.2510
ASME BPE USP 25 class VI (physiological non-toxic)
ASME BPE
Packing Pipes capped and multiple components Pipes capped and each component
single bagged in a specifi ed bag double bagged in a specifi c inner bag and outer
bag under clean room Class 6
(1 000) conditions
Marking and labeling All components are embossed with a permanent identifi cation during the production
process to ensure full traceability:
- Brand name - Lot No.
- Material - Product description
- Dimensions - Article number
- Pressure rating - Standard and approvals
Approvals / Acceptance:
ISPE I ASME BPE I FM-4910
Page11
Jointing methods
Convincing Welding
Technologies
A diverse range of innovative and intelligent welding solutions is enriched with global training and
service off erings
As a pioneer in the fi eld, GF Piping Systems has always placed a very high priority on developing innova-
tive jointing techniques to fulfi ll specifi c requirements and materials in use. Simplicity in application,
chemical resistance, thermal stability and long-term weld strength are the key drivers in our jointing
technologies. With a global jointing training program, international machine rental and a worldwide
network of service centers, our customers benefi t from our expertise and practical experience.
Welding technology Welding machine Joint cross-section Microscopy
Socket fusion –
the strong connection
The fast and reliable solution to pro-
duce heavy-duty connections, in the
workshop or the fi eld.
Butt fusion –
the economical connection
Economical and fl exible fusion espe-
cially for larger diameters. From
manual machines to full CNC control
with traceability.
IR-Plus (Infrared) fusion –
the fast, clean connection
Fast, repeatable and clean welds via
non-contact heating. Full traceability
of the welding process, with user
guidance.
BCF-Plus fusion –
the smooth connection
Bead and Crevice Free jointing with
the highest weld factor, lowest stress
and completely smooth fusion zone
without any intrusions.
For more information about training courses from GF Piping Systems please contact our local sales companies.
Page12
SYGEF system System up to d450
• Completely controlled processes
Key from raw material to installation• Overall system reliability, purity and safety
• Wide range of pipes, fi ttings, valves,
Products automation and accessories• Stress reduced pipes • SEMI F57 conformity
High purity union
Specially • Special HP design with unique positioning of the sealing
• Defi ned tightening for optimal
deforming of the O-ring
Designed • Crevice and dead space free to avoid bacterial growth
• Full plastic design without metal parts
• In accordance with ASME-BPE
for You High purity diaphragm valves• Maintenance free during temperature
cycles due to full plastic design
• Maximized purity due to minimized
dead legs and manufacturing in
Continuous improvements and new develop- clean room class 5 (100)
ments assure a maximum level of quality to our • Double fl ow rate compared to
customers. The SYGEF Plus system off ers very other diaphragm valves
unique key products which are specially de-
signed by GF Piping Systems to fulfi ll even the Pressure regulating valves (PRV)
highest requirements in segments like Micro-
• Special HP-version with patented elasto-
electronic, Energy and Chemical Process Indus- mer-free piston – no abrasion
try.
• Valve assembly without metal
screws for safer operation
• Compact and intelligent modular
design
• Easy maintenance through replaceable
cartridge
Automated IR welding machine
• Advanced QA/QC technology and
monitored jointing work
• Minimized operator errors by
automated welding process
• Full horizontal freedom for
complex installation
• State-of-the-art, man-machine interface
with user friendly touchscreen display
Ultrasonic fl owmeter
• Noninvasive clamp-on design enables
contamination free fl ow measurement
• Easy to retrofi t – minimum downtime
• Real time monitoring
• Clean solution – no contact with medium
• Economic solution
Page13
Specifi cations
Exceeding Your
Standards of Quality
Technical specifi cations with focus on
pressure, temperature and high purity
attributes
Excellent pressure/temperature performance Sterilization / sanitization / cleaning
SYGEF PVDF is a thermoplastic fl uoropolymer with a melting Due to its outstanding material properties, our SYGEF sys-
point above 175 °C and a wide service temperature range tems are suitable for a broad range of sterilization or clean-
from -20 °C to 140 °C. SYGEF systems are ideal for use in ing methods using steam, hot water, ozone and chemicals.
aggressive chemical or ultrapure water systems since they
are generally considered inert, have high strength and stiff -
ness, and are readily weldable into system components.
Pressure-temperature diagram
T (°F)
2 32 62 92 122 152 182 212 242 272 302
17 240
16 SDR21, PN16
15 220
14 200
13
12 180
11 160
10 140
9
8 120
7 100
6
5 80
4 SDR33, PN10 60
3 40
2
1 20
0 0
-30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
T (°C)
P Permissible pressure in bar, psi C = 1.6
C = 2.0 (recommended by GF)
T Temperature in ˚C (Celsius),
˚F (Fahrenheit)
The pressure/ temperature curve based on medium water, operating temperature of 20°C, valid life
time of 25 years and the design factor of C = 2.0 or C = 1.6 respectively
More information regarding technical specifi cations can be found online in our planning fundamentals: www.gfps.com
P (bar)
P (psi)
Page14
Chemical resistance
For Your
Operational
Safety
Professional material technology
Polyvinylidene fl uoride
(PVDF) – a high quality material
Chemical resistance at 20 °C Partially crystalline Amorphous Stainless steel
(Applications can be very dependent on the concentration) thermoplastics thermoplastics
1.4401 1.4301
Media Chemicals PVDF PE PP PVC-U PVC-C
316 304
HNO < 25 %
3 + o o + + o o
Oxidizing acids 25 % < HNO < 65 %3 + o - o + o o
(HNO , H CrO , H CrO aqueous solution
3 2 4 2 4 + o o o o o o
H SO , etc.)
2 4 H SO < 70%
2 4 + + + + + - -
70 % < H SO < 96 %
2 4 + - - + + - -
HCl < 30 % + + + + + o -
Non oxidizing acids
HF < 40 %
(HCl, HF, etc.) + + + + - o -
40 % < HF < 75 % + + + - - - -
HCOOH < 25 % + + + + + o -
Organic 25 % < HCOOH < tech. pure + + + + - o -
(formic acid, acetic CH COOH < 50 %
3 + + + + + o -
acid, citric acid, etc.) 50 % < CH COOH < tech. pure
3 + + + o - o -
C H OH (COOH)
3 4 3 + + + + + o -
Inorganic (NaOH, KOH, etc.) - + + + o + +
Bases
Organic (amine, imidazole, etc.) - + + o - o o
Salts NaCl, FeCl , FeCl , CaCl , etc.
2 3 2 + + + + + o o
Halogens Chlorine, bromine, iodine, (no fl uorine) o - - o o o -
Aliphatic hydrocarbons + o o + o + +
Fuels / oils
Aromatic hydrocarbons + - - - - + +
Chlorinated hydrocarbons o - - - - o o
Ketones o + + - - + +
Solvents Alcohols + + + o - + +
Esters o o o - - + +
Aldehydes - + + - - + +
Phenols Phenol, Cresol, etc. + + + - - + -
+ resistant o conditionally resistant, please consult us - not resistant
Please note: The above list is only intended as a guideline and does not replace an indepth review of material suitability for the particular application. The
information is based on our experience and is state of the art. These data are general indicators only. In practice, however, other factors such as concentra-
tion, pressure and jointing technology must also be taken into consideration. The technical data are not binding and are not expressly
warranted characteristics of the goods.
Please contact us for help in selecting the right materials.
Page15
The smarter way of automation
Automation
Made Easy
A unique system-based approach that bundles and integrates competencies, knowledge,
best-in-class resources and technologies
With an innovative product portfolio in the fi eld of measurement, control and actuation devices, GF
Piping Systems consistently follows its system approach. The complete solution combines measure-
ment, control and actuation technology together with high quality piping systems and represents a
unique form of product and competence bundling. The system-integrated devices that measure values
such as temperature, pressure and fl ow delivering accuracy, productivity, reliability and safety to
customers in a wide range of industries. Providing the entire range of automation technology from
simple instrument panels to complex measurement installations, GF Piping Systems has not only the
product resources and the technical expertise, but also the global service and support infrastructure
needed to meet the high customer requirements.
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Page16
Applications
As Versatile as
Your Applications
Leading applications enabled by safe and reliable systems adapted to fit the needs of highly
demanding industries
GF Piping Systems develops customized best-in-class solutions, aligned to the specific requirements
of our customers in various sectors of industry, enabling profitable operation. With our system
knowledge and product expertise, we support our customers during the planning process, the sus-
tainable realization of the projects and provide valuable added services. Expertise in developing and
producing piping systems, combined with profound industry and market knowledge, based on long-
standing experience, makes GF Piping Systems an uniquely qualified and professional partner for our
customers.
Microelectronics Chemical process industry
Ultrapure water (UPW) is the SYGEF is uniquely equipped to
lifeblood of semiconductor wet provide a broad and versatile
processing. SYGEF Plus system solution for the safe convey-
manufactured out of PVDF high ance of aggressive chemicals in
purity material added with lat- extreme conditions. The excel-
est IR welding technology offers lent life span for temperatures
an industrial benchmark solu- up to 140°C including UV- resis-
tion with excellent leach-out tance even allows outside in-
values and no rouging. stallation.
Energy Water treatment
High voltage direct current With noticeably better water
(HVDC) transmission is used balance compared to steel,
because of its efficiency with SYGEF enables the right water
less power loss. Through its quality for any WT application
thermal resistivity SYGEF sys- like drinking water, industrial
tems are well suited to conduct effluent treatment or filling and
the deionized water in cooling emptying of tanks which are re-
systems to dissipate the gener- quired in manufacturing and
ated heat. Custom solutions of- processing plants to store li-
fered by GF Piping Systems. quid media.
Food & beverage Pharmaceutical
Lighter and corrosion-resistant Down to the lowest pH values
compared to stainless steel the excellent chemical resis-
SYGEF is ideal for the convey- tance of SYGEF provides a high-
ance of food. With FDA conform quality and cost-effective alter-
BCF-welding a smooth and reli- native even to high-performance
able connection is warranted. stainless steel or Titanium al-
Maintenance cycles and life- loys. With BCF welding purest
time are maximized to achieve water conveyance, minimal mi-
highest system efficiency. crobiological growth and endo-
toxin risk is ensured.
Page17
18
Page18
Table of contents
SYGEF Standard 20
SYGEF Plus 280
System-Oriented Fusion Jointing Machines 356
Index 373
19
Page20
SYGEF Standard
SYGEF Standard
Piping systems in PVDF