Installation Guide

Armaflex Thickness Recommendations
2
For Controlling Outer Insulation Surface Sweating
(Based upon available manufactured thicknesses)
Contents:
General information
•Armaflex Thickness Recommendations, p.2
• Rules for using Armaflex, p.3
Armaflex Tube Installation
•Sweat fittings on new pipe, p.4
• Screwed fittings on new pipe, p.4
•Armaflex on new piping: the slip-on method, p.5
•Armaflex on existing piping: the snap-on method, p.6
•Fabricating fitting covers, p.7
• Using miter boxes, p.8
Armaflex Sheet Installation & Templates
• Using Armaflex sheet insulation on pipes, p.9
• Application to fittings, p.9
•Template numbers and descriptions, p.11
•Armaflex sheet on 90° elbows, p.13
•Armaflex sheet on flanged valve fitting
covers, p.14
•Armaflex sheet on metal ductwork, p.16
•ArmaTuff on exterior ductwork, p.17
Pipe Hangers
• Using Armafix IPH or NPH at pipe hanger locations, p.18
•Traditional method for pipe hanger locations, p.18
Applying Self Sealing Armaflex
• AP Armaflex SS tube, p.19
• AP Armaflex SA sheet and roll, p.19
Armaflex Pipe Insulation Thickness Recommendations
For Controlling Outer Insulation Surface Condensation
(Based upon available manufactured thicknesses)
Pipe Size Line Temperatures
50°F (10°C) 35°F (2°C) 0°F (–18°C) –20°F (–29°C)
BASED ON NORMAL DESIGN CONDITIONS*
3/8″ ID through 1-1/8″ ID (10mm–28mm) Nom 3/8″ (10mm) Nom 1/2″ (13mm) Nom 3/4″ (19mm) Nom 1″ (25mm)
Over 1-1/8″ ID through 2-1/8″ ID (28mm–54mm) Nom 3/8″ (10mm) Nom 1/2″ (13mm) Nom 1″ (25mm) Nom 1″ (25mm)
Over 2-1/8″ ID through 2-5/8″ ID (54mm–65mm) Nom 3/8″ (10mm) Nom 1/2″ (13mm) Nom 1″ (25mm) Nom 1-1/4″ (32mm)
Over 2-5/8″ ID through 6″ IPS (65mm–168mm) Nom 1/2″ (13mm) Nom 3/4″ (19mm) Nom 1″ (25mm) Nom 1-1/4″ (32mm)
BASED ON MILD DESIGN CONDITIONS**
3/8″ ID through 2-5/8″ ID (10mm–65mm) Nom 3/8″ (10mm) Nom 3/8″ (10mm) Nom 1/2″ (13mm) Nom 3/4″ (19mm)
Over 2-5/8″ ID through 6″ IPS (65mm–168mm) Nom 1/2″ (13mm) Nom 1/2″ (13mm) Nom 1/2″ (13mm) Nom 3/4″ (19mm)
BASED ON SEVERE DESIGN CONDITIONS***
3/8″ ID through 1-5/8″ ID (10mm–40mm) Nom 3/4″ (19mm) Nom 1″ (25mm) Nom 1-1/2″ (38mm) Nom 1-1/2″ (38mm)
Over 1-5/8″ ID through 3-5/8″ ID (40mm–90mm) Nom 3/4″ (19mm) Nom 1″ (25mm) Nom 1-1/2″ (38mm) Nom 1-3/4″ (44mm)
Over 3-5/8″ ID through 6″ IPS (90mm–168mm) Nom 3/4″ (19mm) Nom 1″ (25mm) Nom 1-1/2″ (38mm) Nom 2″ (50mm)
NOTE: Thicknesses greater than 1″ (25mm) are multiple-layer applications.
*BASED ON NORMAL DESIGN CONDITIONS AP Armaflex in the thicknesses noted and within the specified temperature ranges will control outer insulation surface
condensation indoors under normal design conditions, a maximum severity of 85°F (29°C) and 70% RH. Armacell research and field experience indicate that
indoor conditions anywhere in the United States seldom exceed this degree of severity.
**BASED ON MILD DESIGN CONDITIONS AP Armaflex in the thicknesses noted and within the specified temperature ranges will control outer insulation surface
condensation indoors under mild design conditions, a maximum severity of 80°F (27°C) and 50% RH. Typical of these conditions are most air-conditioned spaces
and arid climates.
***BASED ON SEVERE DESIGN CONDITIONS AP Armaflex in the thicknesses noted and within the specified temperature ranges will control outer insulation surface
condensation indoors under severe design conditions, a maximum severity of 90°F (32°C) and 80% RH. Typical of these conditions are indoor areas in which
excessive moisture is introduced or in poorly ventilated confined areas where the temperature may be depressed below ambient.
Armaflex Sheet/Roll Insulation Thickness Recommendations
For Controlling Outer Insulation Surface Condensation
Ducts—Tanks—Vessels—Equipment
Metal Surface Temperature
50°F (10°C) 35°F (2°C) 0°F (–18°C)
BASED ON NORMAL DESIGN CONDITIONS 3/8″ (10mm) 3/4″ (19mm) 1-1/2″ (38mm)
AP Armaflex in the thicknesses noted and within the specified temperature ranges will control
outer insulation surface condensation indoors under normal design conditions, a maximum Nom. Nom. Nom.
severity of 85°F (29°C) and 70% RH. Armacell research and field experience indicate that
indoor conditions anywhere in the United States seldom exceed this degree of severity.
BASED ON MILD DESIGN CONDITIONS 1/8″ (3mm) 1/4″ (6mm) 1/2″ (13mm)
AP Armaflex in the thicknesses noted and within the specified temperature ranges will control
outer insulation surface condensation indoors under mild design conditions, a maximum Nom. Nom. Nom.
severity of 80°F (27°C) and 50% RH. Typical of these conditions are most air-conditioned
spaces and arid climates.
BASED ON SEVERE DESIGN CONDITIONS 1″ (25mm) 1-1/2″ (38mm) 2″ (50mm)
AP Armaflex in the thicknesses noted and within the specified temperature ranges will control
outer insulation surface condensation indoors under severe design conditions, a maximum Nom. Nom. Nom.
severity of 90°F (32°C) and 80% RH. Typical of these conditions are indoor areas in which
excessive moisture is introduced or in poorly ventilated confined areas where the temperature
may be depressed below ambient.
The data and information are provided as a technical service and are subject to change without notice.