Specification

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AHEAD OF THE FLOW
®
Revised 4/26/2019
ABS
(Acrylonitrile-butadiene-styrene) Class 3-2-2-2-2, conforming
to ASTM D3965, is a time proven material. The smooth inner
surface and superior resistance to deposit formation makes
ABS drain, waste and vent material ideal for residential and
commercial sanitary systems. The residential DWV system can
be exposed in service to a wide temperature span. ABS-DWV
has proven satisfactory for use from -40°F to 160°F. These
temperature variations can occur due to ambient temperature
fluctuations or the discharge of hot liquids into the system.
ABS-DWV is very resistant to a wide variety of materials ranging
from sewage to commercial household chemical formulations.
ABS-DWV is joined by solvent cementing or threading and can
easily be connected to steel, copper, or cast iron through the use
of transition fittings.
PVC
(Polyvinyl Chloride) conforming to ASTM D1784 Class 12454,
formerly designated Type 1, Grade 1. PVC is the most frequently
specified of all thermoplastic materials. It has been used
successfully for over 30 years in such areas as chemical
processing, industrial plating, chilled water distribution,
deionized water lines, chemical drainage, and irrigation systems.
PVC is characterized by high physical properties and resistance
to corrosion and chemical attack by acids, alkalies, salt solutions
and many other chemicals. It is attacked, however, by polar
solvents such as ketones, some chlorinated hydrocarbons, and
aromatics. The maximum service temperature of PVC is 140°F.
With a design stress of 2,000 psi, PVC has the highest long-term
hydrostatic strength at 73°F of any of the major thermoplastics
being used for piping systems. PVC is joined by solvent
cementing, threading, or flanging.
CPVC
(Chlorinated Polyvinyl Chloride) Class 23447, formerly designated
Type IV, Grade 1 conforming to ASTM D1784, has physical
properties at 73°F similar to those of PVC and its chemical
resistance is similar to or generally better than that of PVC.
CPVC, with a design stress of 2000 psi has, over a period of about
30 years, proven to be an excellent material for hot corrosive
liquids, hot and cold-water distribution, and similar applications
above the temperature range of PVC. CPVC is joined by solvent
cementing, threading, or flanging.
PTFE
PTFE (Polytetrafluoroethylene) has outstanding resistance to
chemical attack by most chemicals and solvents. PTFE has a
temperature rating of -200°F to 500°F. PTFE, a self-lubricating
compound, is used as a seat material in NIBCO/Chemtrol
®
ball
valves.
FPM
FPM (Fluoroelastomers or Fluorocarbons) are inherently
compatible with a broad spectrum of chemicals. Because of
this extensive chemical compatibility, which spans considerable
concentration and temperature ranges, fluorocarbons have
gained wide acceptance as a material of construction for
butterfly valve “O”-rings and seats. Fluorocarbons can be used
in most applications involving mineral acids (with the exception
of HCI), salt solutions, chlorinated hydrocarbons, and petroleum
oils.
EPDM
EPDM is a terpolymer elastomer made from ethylene, propylene
and diene monomer. EPDM has good abrasion and tear
resistance and offers excellent chemical resistance to a variety
of acids and alkalines. It is susceptible to attack by hydrocarbons
and is not recommended for applications involving petroleum
oils, strong acids, or strong alkalines.
Material Selection
Thermoplastic and Elastomers