KVCD-3V12 or 22 is an Ultra-low leakage damper designed to provide superior air control with high performance and heavy duty construction. Dampers are especially designed for manual & motorized balancing & shut off applications. They are suitable for use in the majority of commercial medium to high pressure and velocity HVAC systems.
They comply to IECC (International Energy Conservation Code) with a leakage rating of 3cfm/ft2 at 1"Wg pressure (55cmh/m2 at 0.25Kpa) or less.
STANDARD CONSTRUCTION
• FRAME:
18 Ga galvanized steel Flanged frame construction with 35mm flanges.
• BLADES:
16 Ga galvanized steel 3V type blades
Parallel blades model KVCD-3V12
Opposed blades model KVCD-3V22
• SEALS:
Stainless Steel Jamb Seal
Rubber Foam Blade Seal
• BEARINGS:
Nylon bearings
• AXLES:
0.47”(12mm) Square zinc plated steel stud
• LINKAGE:
Concealed in frame 10Ga (3mm) zinc plated steel
• MANUAL HAND-QUADRANT:
Galvanized steel die cast hand-quadrant plated for square or round shaft installed on an elevated bearing bracket
•BRACKET:
1” (25mm) elevated hand bracket
• FINISH:
Mill galvanized
OPTIONS:
1) FRAME CONSTRUCTION
a) Aluminum or stainless steel frame construction.
b) Frame thickness 1.5mm or 1mm (for 1mm thickness not available for Aluminum construction & for Galvanized & stainless steel construction Maximum size is 24”x24”).
2) FLANGES:
Variable size of frame flanges sizes: 20, 25, 30 or 40mm.
3) BLADES CONSTRUCTION
Aluminum or stainless steel blades construction.
4) BEARINGS:
Bronze bearings (std for motorized dampers)
or stainless steel bearings.
5) ACTUATORS:
a) Electric (24,120 & 230V) or pneumatic.
b) Spring return or non-spring return.
c) With or without auxiliary switch.
6) Blades indicator switch - BIS
7) EXTENDED SHAFT (without Hand Quadrant):
4.7” (120mm) extended shaft (round or square) beyond the air control frame.
8) 2" Elevated hand bracket.
MINIMUM SIZES:
a) SINGLE BLADE TYPE:
4"W(101mm) x 4"H(101mm).
b) MULTI-BLADES :
4"W(101mm) x 10"H(254mm)
MAXIMUM SIZES:
a) SINGLE BLADE TYPE:
48"W(1219mm) x 9"H(229mm)
b) MULTI-BLADES SINGLE SECTION:
48"W(1219mm)x 48"H(1219mm)
MULTI-SECTIONS: UNLIMITED