Marstan Inc. - Galvanized and PVS HVAC Duct
PVS Products
Spiral Vinyl-Coated Pipe
Pipe Connectors
Elbows
Reducers
90° Tap, Tees
45° Lateral Tees
Boot Saddle & Shoe Tap
Register Saddle & Boot
Stack Boots, Junction Box and Plenums
Flat Sheets & Accessories
Installation

Galvanized Products
Spiral Galvanized Pipe
Pipe Connectors
Elbows
Reducers
90˚ Taps, Tees
45˚ Lateral Tees
Register Saddles
Flat Sheets, Sealant, Wall Tile, Nail Plate
Rectangular Duct & Products
Round Dampers
Warm Air Fittings
Cold Air Fittings
Access Panels
Slips, Drives, & Roof Accessories

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Low Pressure Fittings for Residential and Light Commercial HVAC Applications

Single & Double
Quadrant Dampers
Heavy-Duty
Quadrant Damper
single double quadrant dampers heavy duty quadrant damper
All dampers are available installed. Specify the fitting to receive the damper. Please note that the fitting length is modified to accept the damper.
Single & Double Quadrant Dampers
D Quadrant Gauge Part #
3 SQD 24 2-0332
4 SQD 24 2-0432
5 SQD 24 2-0532
6 SQD 24 2-0632
7 SQD 24 2-0732
8 SQD 24 2-0832
 
9 DQD 24 2-09322
10 DQD 24 2-10322
11 DQD 24 2-11322
12 DQD 24 2-12322
14 DQD 24 2-14322
15 DQD 22 2-15322
16 DQD 22 2-16322
18 DQD 22 2-18322
20 DQD 22 2-20322
22 DQD 22 2-22322
24 DQD 22 2-24322
Heavy-Duty Quadrant Damper
D ----- Gauge Part #
6 ----- 22 2-063243
7 ----- 22 2-073243
8 ----- 22 2-083243
9 ----- 22 2-093243
10 ----- 22 2-103243
11 ----- 22 2-113243
12 ----- 22 2-123243
14 ----- 22 2-143243
16 ----- 22 2-163243
18 ----- 22 2-183243
20 ----- 20 2-203243
22 ----- 20 2-223243
24 ----- 20 2-243243

Other sizes available.
All Dampers come with all needed hardware.
Other sizes available.  
Note: 2" bead added to any fitting, no charge upon request.
PVS and Galvanized HVAC Equipment