Hayward Valve Materials
Hayward® valves are most often available in the three materials shown below; their descriptions are copied from Hayward's Engineering Product Guide. If you are unsure which material is most compatible with your application, please send us an inquiry and we will assist you with selection.
PVC
(Polyvinyl Chloride)
Type 1, Grade 1 PVC is the most frequently specified of all plastic
valve materials. It has been successfully used for over 40 years in
such areas as chemical processing, industrial plating, chilled
water, deionized water lines, chemical drainage, DWV piping and
irrigation systems. PVC is generally inert to most mineral acids,
bases, salts and paraffinic hydrocarbon solutions. PVC is not
recommended for use with chlorinated or aromatic hydrocarbons,
esters or ketones. PVC possesses excellent fire performance
properties. In particular,
it will not burn once the source of heat or flame is removed. PVC
has excellent weatherability. The PVC used in Hayward products
conforms to ASTM D1784. The maximum recommended working temperature
of PVC is 140°F. PVC products can be installed using solvent cement,
threaded or flanged end connections.
CPVC
(Chlorinated Polyvinyl Chloride)
CPVC is generally inert to most mineral acids, bases, salts and
paraffinic hydrocarbon solutions. CPVC is not recommended for use
with chlorinated or aromatic hydrocarbons, esters or ketones. The
CPVC used in Hayward products conforms to ASTM D1784-23447B. The
maximum working temperature for Hayward products made of CPVC is
190°F at 60 PSI. It has been proven an excellent material for hot
corrosive liquids and hot and cold water distribution. CPVC products
can be installed using solvent cement, threaded or flanged end
connections.
GFPP
(Glass Filled Polypropylene)
GFPP is a lightweight material with generally high resistance to
chemical attack. It has the highest long-term temperature resistance
of any material furnished by Hayward. It has been used successfully
for years in such areas as chemical processing, industrial plating,
chilled water, deionized water lines, chemical drainage, DWV piping
and irrigation systems. GFPP is generally inert to most mineral
acids, bases, salts and hydrocarbon solutions. The GFPP material
used in Hayward products conforms to ASTM D4101. The maximum
recommended working temperature of PP is 250°F. GFPP products can be
installed using threaded or flanged
end connections.
PVDF (Polyvinylidene Fluoride)
PVDF is a thermoplastic polymer with excellent corrosion, chemical and abrasion resistance. It has a good mechanical and thermal stability with a maximum operating temperature of 300°F. The material has a high impact resistance and excellent UV resistance. It is used in applications of high purity and chemical processing.