SPECIFICATIONS
Reusable Valve Wraps
Recommended Application Specifications
| Reusable Valve Covers |
- All valves, strainers, autoflow valves, circuit setters, ball valves, balancing
valves and combination valves, etc., in chilled water and heating hot water systems,
shall be insulated with a factory fabricated removable and reusable cover.
- Insulation shall have a minimum k- factor .26, using fiberglass blanket. Flame
and smoke spread shall be 25/50 per ASTM E-84.
- Outer jacket shall be made of material equal to DuPont Tychem® QC, overlapping
and completely covering the insulation with seams joined by tabs made from hook
and loop fasteners (Velcro). Butt ends shall have sewn- in-place elastic.
- Outer jacket shall overlap adjoining sections of pipe insulation.
- Installation shall not require the use of any special hand tools.
- Manufacturers: No Sweat Valve Wraps, Inc., or approved equal.
|
Qualifications for Use
|
Cold Systems |
Hot Systems |
- For fittings where operating temperature is below 45°F (7°C), or where
the pipe insulation is greater than 1.5" (38mm), two or more layers of the
insulation inserts are required beneath the NO SWEAT™ valve cover surface.
|
- Tychem QC should be limited and kept below 200°F (93°C) by use of proper
insulation thickness.
- Tychem QC should be kept away from contact with, or exposure to, sources of direct
or radiated heat.
- For fittings where operating temperatures exceed 250°F (121°C), or where
pipe insulation is greater than 1.5" (38mm), two or more layers of the insulation
inserts are required beneath the NO SWEAT™ valve cover surface.
|
|
Operating Temperature Limits |
|
| Tychem® QC: |
Up to 200°F (93°C) |
|
Insert: |
0°F to 450°F (-18°C to +232°C) |
| Flame Spread: |
25 or less [up to 30 mil (0.8mml)] |
|
Smoke Developed: |
50 or less [up to 30 mil (0.8mml)] |
| Flammability test results - Class 1: |
Normal Flammability - fabrics are considered and generally
accepted by the trade as having no unusual burning characteristics. |
|
Grade: |
Weatherable |
| Color: |
White/gloss finish |
|
| Physical Properties of Tychem
QC |
|
| Total Basis Weight
ASTM D3776-90 |
2.5 oz/yd2 |
| Thickness
ASTM D1777-75 |
10 mils |
| Water Vapor Transmission (WVT)
ASTM E 96 |
0.01 Perms at 37.8C / 100F - RH / 100% |
| Mullen Burst
STNM D3786-87 |
65 psi |
| Breaking Strength Grab (md/cd)
ASTM D5034-90 |
43/49 lbs |
| Tearing Strength Trapezoid
(md/cd)
ASTM D1117-80 |
7/5 lbs |
|
| General Properties of
the NO SWEAT™ Reusable Valve Wrap when Used over a Properly Installed Fiberglass
Insulation Insert
|
| Temperature limits: |
0°F to 450°F (-18°C to +232°C) |
| Sanitary/Odorless: |
Will not absorb odors. Provides
no food for insects, rodents, or mildew. Resistant to fungi and bacteria. Does not promote growth. |
| UV Resistant: |
Use indoors or outdoors. |
| Excellent Appearance: |
Bright high gloss white coloring
adds a distinct quality appearance to the system. |
| Long Lasting: |
Can be used and re-used once applied. |
| Vibration Resistant: |
Will not settle or separate. |
| Fire Safety: |
DuPont Tychem® QC fabric is rated as "Class
1: Normal Flammability" no unusual burning characteristics. The NO SWEAT removable valve
wrap fiberglass insulation inserts have a UL 25/50 rating and are non-combustible
per ASTM E 136. Accepted for commercial, institutional, industrial, and residential
projects in all parts of North America. |
|
| Thermal Efficiency of
Insert (ASTM C 177) |
Mean Temperature |
Mean Temperature (SI) |
k |
k (SI) |
100°F |
38°C |
.28 |
.040 |
200°F |
93°C |
.38 |
.055 |
300°F |
149°C |
.52 |
.075 |
400°F |
204°C |
.70 |
.101 |
500°F |
260°C |
.90 |
.130 |
|
| Limited Warranty and Limitation
of Remedy |
| The physical and chemical properties of
NO SWEAT™ insulated valve wraps represent typical, average values obtained in
accordance with accepted test methods and are subject to normal manufacturing variations.
They are supplied as a technical service and are subject to change without notice.
Numerical flame spread and smoke developed ratings are not intended to reflect hazards
presented by these or other materials under actual fire conditions. Check with a NO
SWEAT™ technical representative at 1-800-416-4610 to assure current information.
Purchaser will be responsible to determine stability of this product for purchaser's
use. NO SWEAT™ liability will be limited to the purchase price of the material.
No person is authorized to alter this without a NO SWEAT™ officer's written
approval. |
|
