Aliaxis FIP PVDF User manual

PIPES, FITTINGS
AND MANUAL VALVES
PVDF
The PVDF line consists of a comprehensive range of pipes,
fittings and manual valves for use in the construction of process
and service lines for conveying pressurised industrial fluids
in a temperature range from -40° C to 140° C.

PVDF
General characteristics
Reference standards
Approvals and quality marks
Main properties
Socket welding instructions
page 2
page 4
page 5
page 6
page 7
ISO-UNI pipe
Pressure pipe page 12
Fittings for socket welding
Fittings, metric series ISO-UNI
ISO-BSP adaptor fittings
page 20
page 34
VKD DN 10÷50
DUAL BLOCK® 2-way ball valve page 42
VKD DN 65÷100
DUAL BLOCK® 2-way ball valve page 56
VKR DN 10÷50
DUAL BLOCK® regulating ball valve page 70
SR DN 15÷50
Ball check valve page 82
FK DN 40÷400
Butterfly valve page 90
DK DN 15÷65
DIALOCK® 2-way diaphragm valve page 110
VM DN 80÷100
Diaphragm valve page 124
CM DN 12÷15
Compact diaphragm valve page 134
Key abbreviations page 141
PIPE, FITTINGS
AND MANUAL
VALVES
IN PVDF
CONTENTS

PVDF
PVDF (polyvinylidene
difluoride) is a
fluorinated and semi-
crystalline techno-
polymer containing
59% of its weight in
fluorine. This material
is obtained through
the polymerization
of vinylidene fluoride.
It boasts exceptional
mechanical,
physical and
chemical resistance,
guaranteeing
excellent thermal
stability up to 140° C.
The FIP PVDF line uses Solef® PVDF resins, manufactured by SOLVAY for
industrial applications, for the production of pipes, fittings and valves made
by extrusion and injection moulding. The entire line is made using Solef®
resins by SOLVAY S.A. classified according to ASTM D 3222 and complying
with the requirements of ISO 10931.
Thanks to its high purity and exceptional performance, PVDF is the best
alternative to metal materials, and is extensively used in industrial appli-
cations (chemical, oil, pharmaceutical, pulp and paper, electronic, etc.),
whether in process systems or otherwise.
Among the most important properties and advantages of Solef® PVDF, the
following are particularly worthy of note:
• Excellent chemical resistance:
the use of Solef® resin, a vinylidene fluoride polymer, ensures excellent
resistance to corrosion and abrasion when conveying highly aggressive
chemicals. PVDF is basically inert to most inorganic acids and bases, or-
ganic acids, aromatic and aliphatic hydrocarbons, alcohols and halogenat-
ed solvents. However, it is not recommended for use with fluorine, amines,
ketones and oleum (sulfuric acid with sulfur trioxide).
• Excellent thermal stability:
PVDF maintains its characteristics unchanged in a temperature range
between -40° C and +140° C. PVDF pipes are particularly suitable in all
applications requiring high operating temperatures, very low levels of fluid
contamination and high resistance to ageing due to atmospheric agents
and UV radiation. The material's excellent mechanical properties are re-
tained even at high temperatures.
• Fire resistance:
Solef® resins guarantee excellent fire resistance without the need for flame
retardants (Limit Oxygen Index, LOI = 44%). In case of combustion, smoke
emissions are moderated. Solef® PVDF resins are classified UL-94, class
V-O.
• Purity:
Solef® PVDF resin is an extremely pure polymer that does not contain
stabilizers, plasticizers, lubricants or flame retardants. As a result, it is the
ideal material for conveying ultra-pure water and chemicals, ensuring the
non-contamination of the conveyed fluid. As it is physiologically non-toxic,
it is suitable for conveying fluids and food products.
• High abrasion resistance:
according to the Taber Abrasion Test (in which the weight loss of a
material is measured after being exposed to an abrasive wheel for 1000
cycles), PVDF is the most resistant thermoplastic material (CS-10 Load 1kg
- Weight Loss / 1000 cycles = 5-10 mg.)
GENERAL CHARACTERISTICS
2

Density
Test method ISO 1183
Unit of measurement g/cm3
Value Valves/fittings: 1.78 - Pipes: 1.78
Fluidity index (MFI 230° C, 5 kg)
Test method ISO 1133 ASTM D1238
Unit of measurement g/(10 min) g/(10 min)
Value Valves/fittings: 6 - Pipes: 6 Valves/fittings: 24 - Pipes: 24
Modulus of elasticity
Test method ISO 527 ASTM D790
Unit of measurement MPa = N/mm2MPa = N/mm2
Value Valves/fittings: 2100 - Pipes: 2100 Valves/fittings: 2200 - Pipes: 2100
IZOD notched impact strength at 23°C
Test method ASTM D256
Unit of measurement J/m
Value Valves/fittings: 55 - Pipes: 110
Ultimate elongation
Test method ISO 527-2 ASTM D 638
Unit of measurement % %
Value Valves/fittings: 80 - Pipes: 80
Valves/fittings: 5-10 - Pipes: 20-50
Rockwell hardness
Test method ASTM D 785
Unit of measurement R
Value Valves/fittings: 110 - Pipes: 110
Tensile strength
Test method ISO 527 ASTM D 638
Unit of measurement MPa = N/mm2MPa = N/mm2
Value Valves/fittings: 50 - Pipes: 50 Valves/fittings: 53-57 - Pipes: 53-57
Heat distortion temperature HDT (0.46 N/mm2)
Test method ISO 75 ASTM D 648
Unit of measurement °C °C
Value
Valves/fittings: 145 - Pipes: 145 Valves/fittings: 148 - Pipes: 147
Thermal conductivity at 23° C
Test method DIN 52612-1 ASTM C 177
Unit of measurement W/(m °C) W/(m °C)
Value
Valves/fittings: 0.20 - Pipes: 0.20 Valves/fittings: 0.20 - Pipes: 0.20
Coecient of linear thermal expansion
Test method DIN 53752 ASTM D 696
Unit of measurement m/(m °C) m/(m °C)
Value Valves/fittings: 12x10-5
Pipes: 12x10-5
Valves/fittings: 12x10-5
Pipes: 12x10-5
Limiting Oxygen Index
Test method ISO 4859-1 ASTM D 2863
Unit of measurement % %
Value Valves/fittings: 44 - Pipes: 44 Valves/fittings: 44 - Pipes: 44
Surface electrical resistivity
Test method ASTM D257
Unit of measurement ohm
Value Valves/fittings: >1014 - Pipes: >1014
Flammability
Test method UL94
Value V-0
3

REFERENCE
Production of the
PVDF Solef® lines is
carried out according
to the highest quality
standards and in
full compliance with
the environmental
restrictions set
by the applicable
laws in force and in
accordance with
ISO 14001.
All products are
made in accordance
with the quality
guarantee system in
compliance with ISO
9001.
• ANSI B16.5
Pipe flanges and stubs - NPS 1/2 to NPS 24 mm/inch.
• ASTM D3222
PVDF, material for extrusion moulding and coating.
• DIN 2501
Flanges, dimensions
• DIN 16962
PVDF fittings for socket and butt welding, dimensions.
• DIN 16963
Pipe joints and pipe components for pressurised fluids in HDPE.
• DVS 2202-1
Imperfections of PVDF welded joints, characteristics, descriptions and
evaluations.
• DVS 2207-15
Welding of components in PVDF.
• DVS 2208-1
Machinery and equipment for thermocouple welding.
• EN 558-1
Industrial valves - Overall dimensions of metal valves for use in flanged
pipe systems - Part 1: PN designated valves.
• EN 1092-1
Flanges and their joints - Circular flanges for pipes, valves and accessories
- Part 1: Steel flanges, PN designated.
• EN ISO 10931
Specifications for components (Pipes, Fittings and Valves) in PVDF for
industrial applications.
• ISO 5211
Part-turn actuator couplings.
• ISO 7005-1
Metal flanges; part 1: steel flanges.
STANDARDS
4

APPROVALS AND
• DVGW KTW, W270
Suitability of the SOLVAY PVDF Solef® resin for microbiological tests.
• FDA (Food and Drug Administration - USA)
Suitability of the SOLVAY PVDF Solef® resin for contact with food.
• NSF (National Sanitation Foundation USA)
Suitability of the SOLVAY PVDF Solef® resin for use in contact with drink-
ing water.
• DIBt
FIP PVDF Solef® valves have been tested and certified by DIBt (Deutsches
Institut für Bautechnik)
• GOST-R - EAC
PVDF Solef® valves and fittings are GOST-R and EAC certified in accord-
ance with Russian regulations on Safety, Hygiene and Quality
• TA-Luft
FIP PVDF Solef® valves have been tested and certified according to “TA-
Luft” by MPA Stuttgart in compliance with the Technical Instruction on Air
Quality Control TA-Luft/ VDI 2440
• UKR SEPRO
PVDF Solef® valves and fittings are certified in accordance with Ukraine
regulations on Safety, Hygiene and Quality
• WRAS (Water regulations advisory scheme - UK)
Suitability of the SOLVAY PVDF Solef® resin for use in contact with drink-
ing water.
QUALITY MARKS
5

MAIN
PROPERTIES
Properties of PVDF Benefits
Thermal resistance - Operating range: - 40 + 140° C (see
pressure/temperature regression
curves)
Low surface roughness - High flow coecients (extremely
smooth internal walls)
Chemical resistance - Exceptional chemical resistance
for conveying corrosive fluids
(generally inert to inorganic acids
and bases, aromatic and aliphatic
hydrocarbons, organic acids,
alcohols and halogenated solvents)
Abrasion resistance - Extremely low operating costs due
to its long service life
Fully recyclable and non-
toxic
- Physiologically safe
Easy jointing (hot socket,
butt and electrofusion
welding, flanging and
threading)
- Low installation costs
Excellent mechanical
properties
- PVDF responds to the need to
provide suitable mechanical
resistance meeting the design
requirements of industrial plants
6

SOCKET WELDING
INSTRUCTIONS
Fig. 1
Hot socket welding involves fusing the pipe in the fitting's socket. The joint is made
by simultaneously fusing the male and female surfaces by means of special manual
or automatic heating devices. These devices, in their simplest form, are composed of
a heating plate on which a series of heating bushes are mounted. The devices comes
with an appropriate heating system complete with an automatic temperature con-
troller. No additional materials are required for this type of welding. Socket welding
does not affect the chemical resistance of the PVDF, nor does it influence the inner
pressure resistance of the assembled pipes and fittings. The pipe to be welded must
be cut, chamfered and peeled if necessary. The external surface of the pipe and the
internal surface of the fitting must be carefully cleaned, and the external surfaces of
the pipe and fitting can be marked with a reference notch to eliminate the risk of in-
advertent rotation while the joint is setting. The next step is to insert the pipe in the
female bush and the fitting in the male bush and hold them in position for the neces-
sary heating time; when this time has elapsed, the parts must be quickly removed
from the bushes and then the pipe inserted into the fitting to the full previously de-
termined insertion length, ensuring the reference notches are correctly aligned. The
two elements must be supported for approximately 15 seconds after initial insertion
and then left to cool at ambient temperature without using forced air flows or water
immersion.
Procedure for hot socket welding
The method described below is applicable only when creating thermal socket welds
that call for the use of manual type welding equipment (fig. 1). The use of automatic
and semi-automatic appliances, which are particularly suitable for diameters greater
than 63 mm, calls for a specific working knowledge of the welding tool. In this case,
adhere strictly to the tool manufacturer's instructions
1) Select the female bushes and the male bushes of the required diameters, insert
them and secure them to the heating plate (fig. 2).
2) Carefully clean the contact surfaces (fig. 3). When choosing the type of liquid
detergent, use recommended products supplied by specialist producers: trichlo-
roethane, chlorothene, ethyl alcohol and isopropyl alcohol are all suitable.
3) Set the temperature of the heating tool. To form the joint correctly, the tempera-
ture should be set between 250° C and 270° C.
4) When the appliance has reached the preset temperature, check the temperature
of the heating plate using a fast acting thermoprobe.
5) Cut the pipe at right angles, chamfer it and if necessary peel it out (fig. 4-5). The
peeling diameter and length and the chamfer depth must correspond to the val-
ues shown in the table named “Pipe peeling and chamfer dimensions”. The cham-
fering process can be performed either after peeling or concurrently with this
operation, using special calibrated tools.
Fig. 2
Fig. 3 Fig. 4 Fig. 5
7

6) Mark the pipe with the insertion length L1 (fig. 6), referring to the values indicat-
ed in the table named “Pipe insertion length” and checking that any peeling has
been machined to the entire length shown in the table.
7) Mark a longitudinal reference line on the outside of the pipe and the fitting to
prevent the two parts from rotating while the joint is being made (fig. 7).
8) Clean the fitting and pipe from any traces of oil or dust on the weld surfaces (fig. 8).
9) After having checked that the surface temperature of the heating plate has sta-
bilized at the required value, insert the pipe into the female bush and the fitting
in the male bush (fig. 9). Holding the parts inserted in the two bushes (fitting
inserted to limit stop, pipe inserted up to the end of the peeling length), wait for
the minimum heating time shown in the table named “Heating, welding and cool-
ing times”.
10) When the minimum heating time has elapsed, quickly remove the elements
from the bushes and fit the pipe into the fitting for the entire insertion length L1
marked previously (fig. 10). Do not turn the pipe in the fitting; ensure the longitu-
dinal reference marks are perfectly aligned (fig. 11).
11) Hold the jointed elements for the welding time shown in the table named
“Heating, welding and cooling times” and then leave them to cool slowly at
ambient temperature without using forced air flows or water immersion.
12) When the internal and external surfaces have cooled sufficiently, pressurize the
plant for the joint hydraulic test.
Fig. 6
Fig. 7
Fig. 8
Fig. 9 Fig. 10 Fig. 11
8

External diameter
de (mm)
Peeling length
L (mm)
Chamfer
Sm (mm)
16 13 2
20 14 2
25 16 2
32 18 2
40 20 2
50 23 2
63 27 3
75 31 3
90 35 3
110 41 3
External diameter
de (mm)
Length of insertion into the fitting's socket
L1 (mm)
16 12
20 14
25 15
32 17
40 18
50 20
63 26
75 29
90 32
110 35
PIPE PEELING AND CHAMFER DIMENSIONS
PIPE INSERTION LENGTH
HEATING, WELDING AND COOLING TIMES
de
(mm)
PVDF pipes according to: DVS 2207 Part 15
Minimum
thickness* (mm)
Heating
time (sec)
Welding
time (s)
Cooling
time (min)
16 1.5 4 4 2
20 1.9 6 4 2
25 1.9 8 4 2
32 2.4 10 4 4
40 2.4 12 4 4
50 3 18 4 4
63 3 20 6 6
75 3 22 6 6
90 3 25 6 6
110 3 30 6 8
* For proper welding, we recommend using pipes with
wall thickness exceeding 2 mm, and precisely:
- for d up to 50 mm: pipe series PN 10 and PN 16
- for d from 63 to 110 mm: pipe series PN 16, PN 10 and PN 6.
9