Monday, November 30, 2020     
 
 
   
  P.T.F.E. Products
  P.T.F.E. Lingings & Coatings
  P.T.F.E. Insulated Wires, Cables & Sleves
  Pharmaceutical Tabletting Machinery
  Packaging Machinery
  Pneumatic cylinders & Acturators
 
 
 

C. Dorabji & Co. represents Polycoat Flowchem which a is one stop shop for all types of coating and lining needs for chemical, petrochemical and pharma industry.

They provide various type of chemical and corrosion resistant, high temperature linings and coatings like PTFE, FEP, PFA, PVDF, ETFE, ECTF etc.

Corrosion is the biggest enemy of chemical, petrochemical, pharmaceutical, food processing and any other industry where chemicals are used.

Advanced fluoropolymers like PTFE. FEP, PFA, PVDF, ECTF are virtually inert to most chemicals and solvents.

Fluropolymer lined or coated valves, pipes and fitting, vessels are having dual advantage of strength of steel or metal and life of polymer. They can also withstand reasonably high temperature to meet harsh challenge of an industry.

We care for environment and ecology.
(Please click on the products mentioned below for the more details)

  • Lined Products
    • Ball Valve
      • Two Piece (As per BS 5351, Short pattern)
      • Three Piece (As per BS 5351, Long pattern)
    • Diaphragm Valve
    • Butterfly Valve
    • Bottom Flush Valve
    • NRV & Strainers
    • Pipes and Fittings
      • Pipes upto 3 mtr. Length
      • 45 Elbows
      • 90 Elbows
      • 4 way Cross
      • Concentric Reducer
      • Eccentric Reducer
      • Equal "TEE"
      • Unequal "TEE"
      • Reducing "TEE"
    • Custom linings


  • PTFE Coatings

  • PTFE Moulded Articles

SALIENT FEATURES
General
BODY : C.I. GRADED CASTING - IS 210, GR, 220
PARTS : C.S., S.S., M.S., EN 8
BALL : ALUMINIUM
RATING : ASA 600, ASA 300, ASA 150
SIZES : 25 NB TO 300 NB
LINING THICKNESS : 3 mm.
TEMPERATURE : FOR TEFLON/FEP - 200C
WITHSTAND : FOR TEFLON/PFA - 260C
     
TESTING    
SEAT TEST : 10 kg/cm2 (HYDRAULIC)
BODY TEST : 20 kg/cm2 (HYDRAULIC)
SPARK TEST : 15 KVDC

 USAGE  
FEP PFA
CHEMICAL RESISTANCE EXCELLENT EXCELLENT
SOLVENT RESISTANCE EXCELLENT EXCELLENT


APPLICATIONS : CHEMICAL, PETROCHEMICAL, FOOD AND PHARMACEUTICAL INDUSTRIES

SELECTION GUIDE

Chemical Recommended Lining
(* indicates both are recommended)
Resistance at Temp.
in C
Acetic Acid * B.P.
Acetone * B.P.
Ammonia Liquid * B.P.
Benzo Nitrile * B.P.
Benzyl Alcohol * B.P.
Bromine * 93
n-Butyl Amine * 149
Butyl Acetate * 125
Carbon Di Sulfide * 46
Cetane * 51
Chlorine * 93
Chloroform * 62
Cyclohexene * 148
Cyclohexanone * B.P.
Di butyl phinalene TFE 260
Di isobutyle * B.P.
Dioxane * B.P.
Ethyl Acetate * B.P.
Ethyl Alcohol * 204
Ethyl Hexate * B.P.
Ethylene Bromide * 100
Ethylene Glycol * 204
Gasoline * 93
Hydrazine * B.P.
Hydrochloric Acid * B.P.
Hydrofluoric Acid * B.P.
Hydrogen Peroxide * 65
Methyl Ethyl Keton * B.P.
Nepthols * B.P.
Nitric Acid * B.P.
Nitrobenzene * B.P.
Nitrogen Tetroxide * B.P.
Oils, Vegetables & Animal Fats TFE 204
Ozone FEP 25
Perchlorethylene * B.P.
Perfluoroxylene * B.P.
Phenol * B.P.
Phosphoric Acid * B.P.
Phosphorous Pentachloride * B.P.
Pinene * B.P.
Piperidene * 105
Potassium Hydroxide 60% * B.P.
Potassium Permanganate * B.P.
Pyridine * B.P.
Soaps & Detergents * B.P.
Sodium Hydroxide * B.P.
Sodium Hypochloride 20% * B.P.
Sodium Peroxide * B.P.
Solvents, Alipathic & Aromatic TFE (May cause swelling)
FEP
204
260
Stannous Chloride TFE 204
Sulfuric Acid FEP
PFA
260
204
Trichloro Acetic * B.P.
Xylene * B.P.


COMMON SOLVENT EXPOSURE

Solvent Exposure
in C
Exposure time Weight increase
%
Acetone -3.5
10
21
12 Month
12 Month
2 Weeks
0.30
0.40
0
Benzene 25
37
93
96 Hr.
8 Hr.
8 Hr.
0.5
0.6
1.0
Carbon Tetrachloride -3.5
10
21
37
93
12 Month
12 Month
2 Weeks
8 Hr.
8 Hr.
0.6
1.6
1.9
2.5
3.7
Ethyl Alcohol 95% -3.5
10
21
37
93
12 Month
12 Month
2 Weeks
8 Hr.
8 Hr.
0
0
0
0.1
0.3
Ethyl Acetate -3.5
10
21
12 Months
12Months
2 Weeks
0.5
0.7
0.7
Toluene 3.5
10
21
12 Months
12 Months
2 Weeks
0.3
0.6
0.6


Dip-pope Assembaly & STD Pipe Fittings
Ball Valves
Reducing Flange
Equal TEES
Steam Spacers With Side Nozzles

PFA/ FEP Lined Ball Valve
PFA / FEP / PVDF lined ball valves (Globe valves) are made to confirm international standards like BS, ASA and DIN.

Application :

  • Petrochemicals
  • Chemical
  • Pharmaceuticals
  • Food Processing

They are available in two designs.
  • 2 piece confirming to BS 5351 (Short Pattern)
    • Two piece ball valves are shorter in length and confirms to BS 5351. Short Pattern.
    • In this kind of design stem is integral part of Ball, hence lining on ball is prevented from shear in case of excessive torque.
    • Flanges are drilled according to ANSI B 16.5 or it could be as per customer specifications.
    • All Polycoat valve are coated with high quality, corrosion resistant polyurethane paint.
    • Construction material could be customized to the specific need of the customer.


    Dimension Chart
    Size 25 40 50 80 100 150 200 250 300
    L 127 165 178 203 229 267 297 330 358
    P 270 276 280 285 300 350 360 380 400

    Bill Of Material
    Sr. No. Part Name Material
    1 Center Piece ASTM A 216 GR WCB
    2 Side Piece ASTM A 216 GR WCB
    3 Ball TEFLON with Metal Core
    4 Steam TEFLON line Carbon Steel
    5 Gland S.S.
    6 Seat Ring PTFE / TEFLON
    7 Gland Packing PTFE / TEFLON
    8 Gland Washer S.S.
    9 Cap & Handle M.S. or S.S.
    10 Stud & Nuts S.S.


    Lining Specification
    Lining Material FEP / PFA / PVDF
    Lining Thickness 3 MM All Wetted Parts
    Temperature Withstand FEP : 205C Max.
    PFA : 265C Max.


    Test Pressure
    Body 20 kg / cm2
    Seat 10 kg / cm2
    Spark Test 15 KVDC

  • 3 Piece PFA, FEP, PVDF Lined Ball Valves
    • 3 Piece ball valves are classic design, confirming to BS 5351, long pattern.
    • Because stem is not integral part of ball, chances of lining on ball getting sheared increases incase of excessive torque.
    • Flanges are drilled according to ANSI B 16.5 or it could be as per customer specifications.
    • All Polycoat valve are coated with high quality, corrosion resistant polyurethane paint.
    • Construction material could be customized to the specific need of the customer.


    Dimension Chart
    Size 25 40 50 80 100
    L 127 165 203 241 305
    P 270 275 280 285 300

    Bill Of Material
    Sr. No. Part Name Material
    1 Center Piece ASTM A 216 GR WCB
    2 Side Piece ASTM A 216 GR WCB
    3 Ball TEFLON with Metal Core
    ( Aluminum, SS )
    4 Steam TEFLON Lined Cardon Steel
    5 Gland S.S.
    6 Seat Ring PTFE / TEFLON
    7 Gland Packing PTFE / TEFLON
    8 Gland Washer S.S.
    9 Cap & Handle M.S. or S.S.
    10 Stud & Nuts S.S.


    Lining Specification
    Lining Material FEP / PFA / PVDF
    Lining Thickness 3 MM All Wetted Parts
    Temperature Withstand FEP : 205C Max.
    PFA : 265C Max.


    Test Pressure
    Body 20 kg / cm2
    Seat 10 kg / cm2
    Spark Test 15 KVDC

Back


PFA / FEP Lined Diaphragm Valve

  • Neoprene diaphragm with PTFE Lining.
  • Specially formulated strong adhesive to bond rubber diaphragm and PTFE lining.
  • All wetted parts are lined with 3 mm thick PFA / FEP.
  • Corrosion resistant PU coating on outer surfaces.
  • Available in sizes from 15 mm (1/2") to 300 mm (12")
  • Length of valve confirms to BS 6165


Dimension Chart
Size 15 20 25 40 50 80 100 150 200 250 300
L 108 117 127 159 190 254 305 408 521 635 749
H 100 110 120 160 200 240 280 315 360 450 520
A 70 70 100 140 150 220 240 370 410 510 650

Bill Of Material
Sr. No. Part Name Material
1 Body ASTM A 216 GR WCB
2 Bonnet ASTM A 216 GR WCB
3 Spindle AISI 304/316
4 Compressor ASTM A 216 GR WCB
5 Collar Carbon Steel
6 Compressor Pin AISI 304 / 316
7 Bush ASTM A 216 GR WCB
8 PTFE Diaphragm backed by Neoprene Rubber PTFE & NEOPRENE
9 Diaphragm Stud Brass
10 Handle Wheel Cast Iron
11 Lock Screw AISI 304 / 316
12 Stud AISI 304 / 316
13 Grease Nipple Brass


Lining Specification
Lining Material FEP / PFA / PVDF
Lining Thickness 3 MM All Wetted Parts
Temperature Withstand FEP : 205C Max.
PFA : 265C Max.


Test Pressure
Body 20 kg / cm2
Seat 10 kg / cm2
Spark Test 15 KVDC

Back


PFA / FEP Lined Butterfly Valve

Specifications will be displayed as early as possible.

Back


PFA / FEP Lined Bottom Flush Valve
PFA/FEP lined Flush bottom or bottom flush or bottom discharge valves are used to flush tanks and are mounted on bottom. PFA/FEP lining renders it corrosion resistance.


Dimension Chart
Size A B C D E F G H I J
50 x 25 152 90 40 100 108 25 150 220 50 150
80 x 50 190 127 70 160 152 50 330 430 78 200
100 x 80 230 160 88 220 190 75 400 500 100 200
150 x 100 305 210 140 320 230 100 500 600 150 250

Bill Of Material
Sr. No. Part Name Material
1 Valve Seat PTFE / TEFLON
2 Spindle C.S.
3 Body C.I. Graded Casting, W.C.B. Or S.S.
4 Gland PTFE / TEFLON
5 Bonnet C.S.
6 Bolt S.S.
7 Screw S.S. / M.S.
8 Wheel C.S. / M.S.
9 Wheel Nut Gun Metal


Lining Specification
Lining Material TEFLON / FEP
Lining Thickness 3 MM All Wetted Parts
Temperature Withstand FEP : 205C Max.


Test Pressure
Body 20 kg / cm2
Seat 10 kg / cm2
Spark Test 15 KVDC

Back


NRV & Strainers

Ball Check NRV

  • Ball check NRV (non return valve) are available in various sizes from 15 mm (1/2") to 200 mm (8").
  • Option for body material in either CI, WCB or SS 150#.
  • Flanges are drilled as per ANSI B 16.5 or as per customer specifications.
  • All Polycoat valve are coated with high quality, corrosion resistant polyurethane paint.



Dimension Chart
Nominal Bore Lining Thickness
(mm)
L
(mm)
A
(mm)
inches mm.
15 3 130 105
20 3 150 115
1 25 3 127 125
1 40 3 165 160
2 50 3 178 175
3 80 4 203 240
4 100 4 229 270
6 150 5 400 330
8 200 5 600 381


'Y' Strainers
Nominal Bore Lining Thickness
(mm)
L
(mm)
H
(mm)
inches mm.
1 25 3 160 93
1 32 3 200 120
1 40 3 200 120
2 50 4 230 145
3 80 4 310 185
4 100 4 350 220

Back


PFA / FEP Lined Pipes and Fittings
FEP / PFA lined pipes and fittings are best suitable for highly corrosive chemicals and petrochemical, pharmaceutical and food processing industry where no metal tubes last longer or plastic pipes are unusable because of higher service temperature and mechanical stress. Lined pipes and fittings meets extreme mechanical requirement and gives excellent performance upto 265C (509F).

We can supply wide range of pipes and fittings :

  • Pipe upto 3 mtr. (10 feet) length
    • PFA/FEP lined pipes are resistant to most chemicals.
    • Available in wide range of size to meet needs of chemical, petrochemical, pharmaceutical and food processing industry.
    • Available in 25 mm (1") NB to 300 mm (12") NB and length from 100 mm (4") to 3000 mm (120")
    • Pipe material option in C.S. or S.S. as per ASTM A-106 Gr. B
    • Pipe rating option as per Schedule 40 or 20 ( Seamless Pipe )


    Dimension Chart
    Nominal Bore Lining
    Thickness
    (mm)
    D
    (mm)
    d
    (mm)
    T
    (mm)
    L
    (mm)
    inches mm. min. max.
    1 25 3 108 51 14.5 100 3000
    1 40 3 127 73 17.5 100 3000
    2 50 3 152 92 19.5 100 3000
    3 80 3 191 127 24 100 3000
    4 100 4 229 157 24 100 3000
    6 150 5 279 216 25.5 100 2000
    8 200 6 - 6.5 343 270 29 100 2000
    10 250 7 - 7.5 406 324 30.5 100 1000
    12 300 7.5 - 8 483 381 32 100 500

    • Pipe body from C.S. or S.S. as per ASTM A-106 Gr. B (Customer specified)
    • Pipe rating will be Schedule 40 or 20 (Seamless Pipe) (Customer specified)
    • Pipes all flanges will be 150#
    • Pipes all flanges drilled to be ANSI B 16.5 or customer specified.


    Lining Specification
    Lining Material PFA / FEP
    Lining Thickness 3 to 8 MM ALL WETTED PARTS
    Temperature Withstand FEP 205C
    PFA 265C


    Test Pressure
    PIPE 20 kg / cm2
    Spark Test 15 KVDC


  • Flanged Concentric reducer, nominal bore 40 x 25 mm (1" x 1") to 300 x 250 mm (12" x 10")
    Polycoat Flowchem manufacture PFA/FEP lined reducer in two main configuration, viz. Concentric reducer and eccentric reducer. Flanges are drilled to meet ANSI B 16.5.

    Reducers are used to connect lines of two unequal sizes.

    Dimension Chart
    Nominal Bore Lining
    Thickness
    F
    D1
    d1
    D2
    d2 T t
    inches mm. mm. mm. mm. mm. mm. mm. mm.
    1 x 1 40 x 25 3 114 127 108 73 51 17.5 14.5
    2 x 1 50 x 25 3 127 152 108 92 51 19.5 14.5
    2 x 1 50 x 40 3 127 152 127 92 73 19.5 17.5
    3 x 1 80 x 25 3 152 191 108 127 51 24 14.5
    3 x 1 80 x 40 3 152 191 127 127 73 24 17.5
    3 x 2 80 x 50 4 152 191 152 127 92 24 19.5
    4 x 2 100 x 50 4 178 229 152 157 92 24 19.5
    4 x 3 100 x 80 4 178 229 191 157 127 24 24
    6 x 3 150 x 80 5 229 279 191 216 127 25.5 24
    6 x 4 150 x 100 5 229 279 229 216 157 25.5 24
    8 x 4 200 x 100 6 279 343 229 270 157 29 24
    8 x 6 200 x 150 6.5 279 343 279 270 216 29 25.5
    10 x 6 250 x 150 7 - 7.5 305 406 279 324 216 30.5 25.5
    10 x 8 250 x 200 7 - 7.5 305 406 343 324 270 30.5 29
    12 x 8 300 x 200 7.5 - 8 356 483 343 381 270 32 29
    12 x 10 300 x 250 7.5 - 8 356 483 406 381 324 32 30.5


    Standard Concentric Reducer confirm to the following
    • Concentric Reducers body will be C.I., W.C.B or S.S. 150#.
    • Concentric Reducers all flanges will be 150#
    • Concentric Reducers all flanges drilled to be ANSI B 16.5


    Lining Specification
    Lining Material TEFLON / FEP
    Lining Thickness 3 to 8 mm. All Wetted Parts
    Temperature Withstand 205C temp. max.


    Test Pressure
    Test Pressure 20 kg / cm2
    Spark Test 15 KVDC


  • Flanged eccentric reducer, nominal bore 40 x 25 mm (1" x 1") to 300 x 250 mm (12" x 10")

    Dimension Chart
    Nominal Bore Lining
    Thickness
    F
    K
    D1
    d1
    D2
    d2 T t
    inches mm. mm. mm. mm. mm. mm. mm. mm. mm.
    1 x 1 40 x 25 3 114 7 127 108 73 51 17.5 14.5
    2 x 1 50 x 25 3 127 13 152 108 92 51 19.5 14.5
    2 x 1 50 x 40 3 127 7 152 127 92 73 19.5 17.5
    3 x 1 80 x 25 3 152 20 191 108 127 51 24 14.5
    3 x 1 80 x 40 3 152 20 191 127 127 73 24 17.5
    3 x 2 80 x 50 4 152 15 191 152 127 92 24 19.5
    4 x 2 100 x 50 4 178 25 229 152 157 92 24 19.5
    4 x 3 100 x 80 4 178 10 229 191 157 127 24 24
    6 x 3 150 x 80 5 229 40 279 191 216 127 25.5 24
    6 x 4 150 x 100 5 229 25 279 229 216 157 25.5 24
    8 x 4 200 x 100 6 279 50 343 229 270 157 29 24
    8 x 6 200 x 150 6.5 279 25 343 279 270 216 29 25.5
    10 x 6 250 x 150 7 - 7.5 305 50 406 279 324 216 30.5 25.5
    10 x 8 250 x 200 7 - 7.5 305 25 406 343 324 270 30.5 29
    12 x 8 300 x 200 7.5 - 8 356 50 483 343 381 270 32 29
    12 x 10 300 x 250 7.5 - 8 356 25 483 406 381 324 32 30.5


    Standard Concentric Reducer confirm to the following
    • Eccentric Reducers body will be C.I., W.C.B or S.S. 150#.
    • Eccentric Reducers all flanges will be 150#
    • Eccentric Reducers all flanges drilled as per ANSI B 16.5


    Lining Specification
    Lining Material TEFLON / FEP
    Lining Thickness 3 to 8 mm. All Wetted Parts
    Temperature Withstand 205C temp. max.


    Test Pressure
    Test Pressure 20 kg / cm2
    Spark Test 15 KVDC


    PFA / FEP LINED TEE ("T"Connection)

    • Lined Tee connections are available in two configuration, equal and unequal.
    • Lining of PFA or FEP as per customer specifications.
    • Lining thickness of 3mm.

  • Equal TEE, nominal bore 25 mm (1") to 300 mm (12")

    Dimension Chart
    Nominal Bore Lining
    Thickness
    A D d t
    inches mm.
    1 25 3 89 108 51 14.5
    1 40 3 102 127 73 17.5
    2 50 3 114 152 92 19.5
    3 80 3 140 191 127 24
    4 100 4 165 229 157 24
    6 150 5 203 279 216 25.5
    8 200 6.5 229 343 270 29
    10 250 7.5 279 406 324 30.5
    12 300 8.5 305 483 381 32


    Standard Tee confirm to the following
    • "Tee" body will be S.S. , W.C.B. or C.I. Class 150#
    • "Tee" rating will be Schedule 40 ( Seamless Pipe )
    • Tees all flanges will be 150#
    • Tees all flanges drilled to be ANSI B 16.5


    Lining Specification
    Lining Material PFA / FEP
    Lining Thickness 3 mm. All Wetted Parts
    Temperature Withstand FEP 205C temp. max.
    PFA 205C temp. max.


    Test Pressure
    Test Pressure 20 kg / cm2
    Spark Test 15 KVDC


  • Reducing (Unequal) TEE, nominal bore 40 x 25 mm (1" x 1") to 200 x 100 mm (8" x 4")

    Dimension Chart
    Nominal Bore Lining
    Thickness
    A D1 d1 D2 d2 T t
    inches mm. mm. mm. mm. mm. mm. mm. mm.
    1 x 1 40 x 25 3 102 127 73 108 51 17.5 14.5
    2 x 1 50 x 25 3 114 152 92 108 51 19.5 14.5
    2 x 1 50 x 40 3 114 152 92 127 73 19.5 17.5
    3 x 1 80 x 25 3 140 191 127 108 51 24 14.5
    3 x 1 80 x 40 3 140 191 127 127 73 24 17.5
    4 x 1 100 x 25 4 165 229 157 108 51 24 14.5
    4 x 1 100 x 40 4 165 229 157 127 73 24 17.5
    4 x 2 100 x 50 4 165 229 157 152 92 24 19.5
    4 x 3 100 x 80 4 165 229 157 191 127 24 24
    6 x 1 150 x 25 5 203 279 216 108 51 25.5 14.5
    6 x 1 150 x 40 5 203 279 216 127 73 25.5 17.5
    6 x 2 150 x 50 5 203 279 216 152 92 25.5 19.5
    6 x 3 150 x 80 5 203 279 216 191 127 25.5 24
    6 x 4 150 x 100 5 203 279 216 229 157 25.5 24
    8 x 2 200 x 50 6.5 229 343 270 152 92 29 19.5
    8 x 3 200 x 80 6.5 229 343 270 191 127 29 24
    8 x 4 200 x 100 6.5 229 343 270 229 157 29 24


    Standard Reducing Tee confirm to the following
    • "Reducing Tee" body will be S.S. , W.C.B. or C.I. Class 150#
    • "Reducing Tee " rating will be Schedule 40 ( Seamless Pipe )
    • Reducing Tees all flanges will be 150#
    • Reducing Tees all flanges drilled to be ANSI B 16.5


    Lining Specification
    Lining Material PFA / FEP
    Lining Thickness 3 mm. All Wetted Parts
    Temperature Withstand FEP 205C temp. max.
    PFA 205C temp. max.


    Test Pressure
    Test Pressure 20 kg / cm2
    Spark Test 15 KVDC


  • Cross (Four way, equal), nominal bore 25 mm (1") to 300 mm (12")

  • 45 Elbow, nominal bore 25 mm (1") to 300 mm (12")
    • PFA/FEP elbows are resistant to most chemicals.
    • Available in wide range of size to meet needs of chemical, petrochemical, pharmaceutical and food processing industry.
    • Available in 25 mm (1") NB to 300 mm (12") NB and length from 100 mm (4") to 3000 mm (120")

    Dimension Chart
    Nominal Bore Lining
    Thickness
    C J OD d t
    inches mm. mm. mm. mm. mm. mm.
    1 25 3 44 32 108 51 14.5
    1 40 3 57 41 127 73 17.5
    2 50 3 64 44 162 92 19.5
    3 80 3 76 54 191 127 24
    4 100 3 102 71 229 157 24
    5 150 5 127 90 279 216 25.5
    6 200 6.5 140 98 343 270 29
    10 250 7.5 165 114 406 324 30.5
    12 300 8.5 190 135 453 381 32


    90 Elbow
    • PFA/FEP elbows are resistant to most chemicals.
    • Available in wide range of size to meet needs of chemical, petrochemical, pharmaceutical and food processing industry.
    • Available in 25 mm (1") NB to 300 mm (12") NB and length from 100 mm (4") to 3000 mm (120")


    Dimension Chart
    Nominal Bore Lining
    Thickness
    A OD d t
    inches mm. mm. mm. mm. mm.
    1 25 3 89 108 51 14.5
    1 40 3 102 127 73 17.5
    2 50 3 114 152 92 19.5
    3 80 3 140 191 127 24
    4 100 4 165 229 157 24
    5 150 5 203 279 216 25.5
    6 200 6.5 229 343 270 29
    10 250 7.5 279 406 324 30.5
    12 300 8.5 305 483 381 32

Back


Custom Lining

Nonstandard Lined vessles, stirrers, reaction vessels, thermo couple wells, dipping pipes, headers, special pipe fittings are very common requirement of chemical, petro chemical, pharmaceuticals and food processing industry.

Our well equipped tool room and trained mold makers can meet your all custom requirement. And it does not cost heaven.

Few of such examples are illustrated under :
  • Custom Lined Reaction Vessel
    Custom lined reaction vessles with end covers, thermowell pipes, all nozzles are welded to body.



  • Custom Lined Pipe Fitting (Header)
    Special purpose distribution header. Having 2 nozzles.







  • Custom Lined Acid Tank
    This acid Tank used in pickling, Size: 750 mm L X 200 mm W X 200 mm H.







  • Custom Lined Stirrer
    FEP lining on stirrer, having span of 900 mm.






Back


PTFE* Coatings

PTFE (polytetrafluoroethylene) coatings are water based dispersion coating having non stick, chemical resistance and very low co efficient of friction.

  • Textile sizing cylinders and rollers.
  • Drying cylinder.
  • Photocopier rollers.
  • Cook wares.
  • Toasters, grillers and similar kitchen appliances.
  • Biscuit dies.
  • FRP Molds

Back


PTFE Moulded Articles

Polycoat offers variety of PTFE (polytetrafluroethylene) molded basic forms like rods, sheet, bush, square bars etc.

PTFE is known for its inert and corrosion resistance properties which easily encounters various otherwise difficult combinations of pressure, temperature, speed, corrosion, moisture, fumes, abrasion, friction etc.

Out of many unique properties if put in one line statement it translate as under :

  • Corrosion resistance : Practically inert to most known chemicals to mankind.
  • Tough yet flexible at wide range of temperature, including cryogenic temperature.
  • Lowest co efficient of friction, PTFE has second lowest coefficient of friction. Second best to Wet Ice to Wet Ice.
  • Almost zero absorption of water, moisture.
  • Non toxic, odor and colorless, non aging, sable under various light conditions, hygienic.
  • Best electrical and dielectric properties, low power factor, no tracking.
  • Ideal for sealing at elevated temperature upto 250C.

Few Application area

Chemical & Petrochemical Industries Gaskets, Tubes, Gland seals, Packing, Valve seats, "O" rings, Lantern rings, Diaphragms, Thread sealant tapes, universal rope packing, flexible hoses etc.
Electrical & Electronic Industries Inserts, insulators, adaptors, beads, holders for valves, connectors, spacers, sleevings etc.
Medical & Orthopedic Artificial bones, ear plugs, kidneys etc.
Aerospace Industries Application in this area is so wide that we really can not list it here.
Engineering Bearings, piston rings, slide tracks, oil seals, gaskets, washers, diaphragm for pumps, valves, gears etc.
Scientific Equipments Expansion joints, bellows, connection gaskets, crescent rings etc.
Rubber & Tyre Industries Washers, seals, steam hoses etc.


Property Chart

Properties Method Result Units
Tensile Strength @ 73F D638-52T 2000-4000 PSI
Elongation @ 73F 200-400 %
Young's Modulus @ 73F Standard 0.58
4.08
lbft/in2 X 105
kgf/cm2 X 105
Flexural Strength @ 73F ASTMD 790-61 did not break lbft/in2
Flexural Modulus @ 73F ASTMD 747-61T 50000-90000 lbft/in2
Impact strength (Izod)@ 73F ASTMD 256-66 3.0 lbft/in2
Hardness durometer ASTMD 1706-59T D 50 - D 65
Compressive stress
@ 1% deformation @ 73F
@ 1% offset @ 73F

ASTM 695-52T
ASTM 695-52T
600
1000
PSI
PSI
Deformation under load
(122F - 1000 PSI, 24 Hours)
ASTM D621-59 2.4 %
Deformation under load
(122F - 2000 PSI, 24 Hours)
ASTM D621-59 15 %
Coefficient of linear thermal Expansion perF 73F - 140F ASTMD 696-44 5.5X10-5 BTHU
Thermal conductivity Cenco fitch Apparatus 1.7 sq. ft/F/in
Specific heat 0-212F range - 0.25 BTU/ib/F
Head deflection temp. @ 66 psi ASTMD 648-56 250 o F
Heat resistance Standard 500 o F
Dielectric strength short time 0.080 in ASTMD 149-55T 600 V/mil
0.005-0.012 in " 1000-2000 V /mil
Volume resistivity ASTMD-257-57T 10 8 ohm-cm
Surface arc resistance ASTMD-495-56T >300 Sec.
Dielectric constant @ 73F 50% RH ASTMD 150-54T 21
Dissipation factor 60 to 2 X 109 cps ASTMD 150-59T 0.0003
Power factor @ 73F 50% RH ASTMD 150-54T <0.0003
Water Absorption 24 hours ASTMD 570-54T <0.01 %
Flammability ASTMD 635-56T Non-flammable
Specific gravity ASTMD 792-60T 2.14 - 2.20
Resistance to weathering Standard Excellent
Static kinetic coefficient of
friction against polish steel
Various methods used 0.05 to 0.08


        Teflon* - Trademark of DuPont
        Fluon* - Trademark of ICI Ltd.


 

Back


 
   
 
 
 
 
  Copyright 2006 - 2007 Cdorabji.com All rights reserved.