Product Overview

K-FLEX
®
} K-FIT
®
www.kexusa.com
K-FLEX
®
K-FIT
®
CLOSED CELL FLEXIBLE ELASTOMERIC
FOAM INSULATION FACTORY-APPLIED
DOUBLESEAL CLOSURE SYSTEM
DESCRIPTION
K-FIT
®
fittings are factory-fabricated fittings
made from NBR/PVC-based closed cell, flexible
elastomeric foam insulation. They are produced
under controlled conditions using an automated
process to ensure uniformity, good fit and water-
tight seams. They are environmentallyfriendly as
they are free of CFCs, HFCs, HCFCs, PBDEs,
formaldehyde and fibers. An EPAregistered
antimicrobial agent is incorporated into the
product providing additional protection against
mold, fungal and bacterial growth. They are UL
GREENGUARD
®
Gold Certified for low VOC
emissions. The products are made in K-FLEX
®
USA’s ISO 9001:2008-certified manufacturing
facility in North Carolina.
AVAILABILITY
K-FIT
®
fittings are available in elbow (45s and 90s)
and tees in wall thicknesses of 1/2” up to 2” with
diameter sizes ranging from 3/8” I.D. to 6” IPS.
(ID range is subject to variation depending on
wall thickness). K-Fit p-traps are available in wall
thicknesses of 1/2” up to 1-1/2” with diameter
sizes ranging from 5/8” I.D. to 2-1/8” I.D.
APPLICATION
K-FIT
®
fittings are recommended for applications
with service temperatures ranging from -297°F
(-182°C) to +220°F (+104°C).
For applications below -40°F (-40°C), contact
K-FLEX
®
technical support. The products are used
to retard heat gain and prevent condensation or
frost formation on belowambient applications,
including refrigerant, cold water plumbing, chilled
water, and industrial process lines, among others.
They can be used with heat tracing tapes. They
also retard heat loss from medium hot systems,
including hot water plumbing, liquid heating, dual
temperature, and solar thermal piping, among
others.
OUTDOOR APPLICATION
K-FIT
®
fittings are made from a UV-resistant
elastomeric blend. For severe UV exposure
(rooftop applications) or for optimum performance,
K-FLEX
®
374 Protective Coating, approved
jacketing or K-FLEX
®
CLAD
®
is recommended.
INSTALLATIONS
K-FIT
®
fittings are flexible (even at low
temperatures), durable (non-fracturing and skin is
resistant to tearing from handling and environment),
safe to handle (non-dusting and non-abrasive),
and lightweight for an efficient installation.
K-FLEX
®
recommends that insulation is installed
on non-operational systems with clean, dry
surfaces in ambient conditions between 40°F and
100°F. For best installation results, fittings should
be installed prior to straight run insulation. Properly
sized fittings can be installed by slitting the fitting
(using a sharp, non-serrated knife) and applying
contact adhesive to the longitudinal seam of both
surfaces. Once the adhesive becomes tacky, the
fitting can be placed over the pipe and pressure
applied to the seam. Straight pipe insulation can
then be installed. with butt joints adhered to those
of the fitting. All seams, butt joints, termination
points and open ends should be sealed with an
approved contact adhesive, making sure both
surfaces to be joined are coated.
ASTM C1710, Installation Guide for Flexible Closed
Cell Foams, and the K-FLEX
®
Installation Manual
should be used as comprehensive installation
guides.
K-FIT
®
P-Traps are specifically designed to fit
Mueller Industries Suction Line P-Traps. K-FLEX
®
USA will not warrant the fit of its K-FIT
®
P-Trap for
any other manufacturer’s suction line P-Trap.
RESISTANCE TO
MOISTURE VAPOR FLOW
The expanded closed cell structure and unique
formulation inherently resists moisture vapor
intrusion. For most indoor applications, K-FIT
®
needs no additional protection. Additional vapor
barrier protection may be necessary when installed
on cold surfaces that are exposed to continuous
high humidity.
FLAME AND SMOKE RATING
K-FIT
®
in wall thicknesses of 2” (50 mm) and below
has a flame spread rating of 25 or less and a
smoke development rating of 50 or less as tested
to ASTM E84, “Surface Burning Characteristics
of Building Materials”. It is acceptable for duct/
plenum applications, meeting the requirements of
NFPA 90A/B.
Numerical flammability ratings alone may not
define the performance of products under actual
fire conditions. They are provided only for use in
the selection of products to meet limits specified
when compared to a known standard.
Technical Data referenced in this document
pertains to K-FIT
®
fittings made from K-FLEX
®
NBR/PVC-based black elastomeric insulation.
For technical information for K-FIT
®
White and
K-FIT
®
ECO, please see respective product sheets
as availability, technical properties, specification
compliance, and installation recommendations are
subject to change.
SPECIFICATION COMPLIANCE
` ASTM C534 Type 1, Grade 1
` ASTM D1056-00-2B1
` New York City MEA 186-86-M Vol. V
` USDA Compliant
` CFIA Compliant
` RoHS Compliant
` ASTM E84 25/50-rated (to 2”) - tested to
UL 723, NFPA 255 and
CAN/ULC S102-03
` NFPA No. 101 Class A Rating
` NFPA 90A, 90B
` Meets requirements of California ECB
Title 24
` UL GREENGUARD
®
Gold Certified
` Meets energy code requirements of
ASHRAE 90.1 and 189.1
Made in USA
The K-FLEX
®
USA website contains the most recent version of all K-FLEX
®
USA literature.
Please refer to the website for current versions of K-FLEX
®
USA literature at www.kflexusa.com