PVC (Polyvinyl Chloride) (32

1
Asahi/America Valve Materials
Plastic Materials

• PVC (Polyvinyl Chloride) (32F -140
  F.)
• Cell Class 12454A-(ASTM D 1784)
• CPVC (Chlorinated Polyvinyl Chloride) (32F
  -195 F.)
• Cell Class 23567A-(ASTM D 1784)
• PP (Polypropylene)
  (-4F -195 F.)
• Cell Class 0210B67272 -(ASTM D4101-92B)
• PVDF (Polyvinylidene Fluoride) (-40F -250
  F.)
• Cell Class Type II -(ASTM D 3222-91A)
• PDCPD (Polydicyclopentadiene) (-20F -175
  F.)

2
Asahi/America Seal Materials
Seal Materials

• EPDM- 212 F
• Viton (FKM) 250 F
• Teflon gt250 F
• Aflas gt250
• Nitrile-212 F
• Hypalon- 250 F
• Styrene Butadiene Rubber gt140 F
• Viflon (FKM-F, FKM-C) 250 F

3
Asahi/America Abrasion Tests
Akron Abrasion Tests on Plastics Elastomers
Plastics of Wear Hardness Scale
PVC .240 D CPVC
.514 D PP .550 D PVDF .182 D
Elastomers EPDM .490 A VITON (FKM)
.968 A HYPALON(CSM) 1.00
A NITRILE(NBR)
.190 A
4
Asahi/America Seal Materials
Specialty Elastomers

• AFLAS
• Tetrafluoroethylene/propylene copolymer
• Similar chemical resistance to Teflon
• Excellent abrasion resistance
• Capable of 400 F
• Viflon F, Viflon C
• FKM-F, FKM-C

5
Asahi/America Physical Properties
Physical Properties

• UV Excellent UV resistance in all materials.
  After 10 years exposure, virtually no decrease in
  burst pressure a 5 increase in tensile
  strength.
• Abrasion Superior abrasion resistance compared
  to metal valves due to the inherent properties of
  plastics smooth surfaces and better absorption
  of impact energy.
• Impact Resistance Superior impact resistance
  compared to competitors plastic valves . Result
  of body mass (wall thickness) and little or no
  voids created in the molding process.

6
Asahi/America Quality Design

• All valves have a minimum working pressure safety
  factor of 4 to 1.
• Average hydrostatic burst pressure is 2000 psi.
• All valves are tested after manufacturing.

All valves (except dampers) meet or exceed Class
VI Shutoff. All valves have traceability as each
is labeled with a manufacturers number. All
valves can be hydrostatically tested 1.5 x max.
working pressure for 10 minutes per ASME B31.1.