Polyvinlidene Fluoride PVDF Pipe and fittings

PVDF Pipe fittings

PVDF Pipe fittings are made up of Polyvinlidene Fluoride PVDF.  it is a tough engineering thermoplastic that offers a unique balance of performance properties. Polyvinylidene fluoride PVDF, the homo polymer of 1- difluoroethylene, is a tough engineering thermoplastic. The unique structure of alternating methylene and difluoromethylene units along the chain create a polymer material having high crystalline combined with a high polarity resulting in a sharp melting point. Thus PVDF has the characteristic stability of fluoropolymers when exposed to harsh thermal, chemical and ultraviolet environments while retaining the properties of a conventional thermoplastic material.

Resins area series of PVDF-based co-polymers similar to homo-polymer resins in purity and chemical resistance, but having additional chemical compatibility in high pH solutions, increased impact strength at ambient and low temperatures, and increased clarity. Suitable for the delivery of pharmaceutical grade purified water (PW) and DI water, using hot water, steam chemical or ozone sanitation. Due to its excellent chemical resistance it is widely used in chemical distribution system

Polyvinlidene Fluoride (PVDF) is a unique thermoplastic with properties which allow it to be used for very aggressive or highly specialized applications. Although expensive compared to other thermoplastics, PVDF offers an economically attractive alternative to many “exotic” materials and/or in process lines where limited working life of other materials necessitates frequent replacement.

PVDF has excellent chemical and physical properties, even at low temperatures, and has considerable resistance to abrasion. It is resistant to most of the inorganic acids and bases, and to aliphatic and aromatic hydrocarbons, organic acids, alcohols and hydrogenated solvents. It is also non-toxic and can be used for high purity applications.

Safe working temperatures range from -40ºC to +120ºC, with short term use possible at temperatures well above this level.

PVDF pipe systems are assembled using heat fusion welding, either using socket fittings or butt fusion of pipes and/or fittings end to end.

IMPORTANT Properties of PVDF Pipe fittings

  • Mechanical strength and toughness
  • High dielectric strength
  • Readily melt process able
  • Exceptional outdoor weather resistance due to its total inertness to UV radiation
  • Low permeability to most gases and liquids
  • Low flame and smoke characteristics
  • High abrasion resistance
  • Very low creep
  • Mechanical strength and toughness
  • Resistance to most chemicals and solvents
  • Resistance-to nuclear radiation
  • Resistance to fungi
  • Very smooth surfaces can be obtained

PVDF Pipe fittings uses

  • Exceptional Chemical Resistance
  • UV Resistant, and Abrasion Resistant PVDF
  • Meets UL 94 V-0
  • Has FDA, USDA and USP VI Approval
  • Easily Machined and Fabricated

PVDF Pipe fittings key properties

  • High Chemical Resistance
  • Superior Abrasion Resistance
  • Temperature Range of -40º F to 250º F
  • Socket Fusion Joining System
PropertyValueUnitsMethod
MECHANICAL PROPERTIES
Tensile Strength, 73°F, at break5075 – 7250psiD 638
35 – 50MPa
Elongation at break, 73°F20 – 50%D 638
Flexural Strength, 73°F2100psiD 790
11165MPa
Impact Strength, Izod, 23 deg C, notched, 4mm thick2.25Ft-lbf/inD 256
120J/m
Yield StrengthAt 23 deg C7685 – 8265psiD 638
53 – 57MPa
Density1.78gm/cu.cm
Coefficient of friction, static0.2 to 0.4D 1894
THERMAL PROPERTIES
Coefficient of Linear Expansion12 – 14 x 10-5K-1D 696
Melting Point343deg FD 3418
173deg C
Thermal Conductivity1.39Btu·in/h·ft2·°FASTM C 177
0.2W/m·K
Specific Heat, at 300 deg K0.287 – 0.382Btu/lb/deg F
1.2 – 1.6kJ/Kg/deg K
Heat Distortion Temperature, 66 lb/sq.in (0.455 MPa), 4 mm thick293deg FD 648
145deg C
Service Temperatureto 302deg F
to 150deg C
Processing Temperaturedeg F
deg C
ELECTRICAL PROPERTIES
Surface Arc-ResistancesecD 495
Volume Resistivity> 1014ohm-cmD 257/DIN 53483
Surface Resistivity, @ 100% RH> 1014Ohm sq-1D 257/DIN 53483
1MHz, 23 deg C7εD150-81
OTHER PROPERTIES
Flame Rating+V-0ClassUL-94
Refractive Index1.41 – 1.42nD 25D 542
Limiting Oxygen Index44% OxygenD 2863
Water Absorption, 230 deg C, 10 Kg< 0.04gm/10 minD 1238
Specific Gravity1.78ISO 1183
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