By-Pass Sizing Calculator

Often with zoning systems a By-Pass is needed to relieve excess air when only a small zone or number of small zones cannot deliver the required air flow thru the HVAC System. A by-pass is often ducted back into the return air or into non-critical, common conditioned temperature areas such as entry ways, hallways, basements, etc.

Select your Maximum Total System Cubic Feet per Minute (CFM), then enter the CFM of your Smallest Zone to calculate the type of By-Pass Damper you require.

Note: If the By-Pass CFM amount is 30% or less of the Total System CFM, No By-Pass is required.

Loading...


SPRD08

The By-Pass Damper you are looking for is SPRD08.

Check it out here.

SPRD09

The By-Pass Damper you are looking for is SPRD09.

Check it out here.

SPRD10

The By-Pass Damper you are looking for is SPRD10.

Check it out here.

SPRD12

The By-Pass Damper you are looking for is SPRD12.

Check it out here.

SPRD14

The By-Pass Damper you are looking for is SPRD14.

Check it out here.

SPRD16

The By-Pass Damper you are looking for is SPRD16.

Check it out here.

RDM18-SPC

The By-Pass Damper you are looking for is RDM18 w/SPC.

Check it out here.

RDM20-SPC

The By-Pass Damper you are looking for is RDM20 w/SPC.

Check it out here.

ZDSM2020-SPC

The By-Pass Damper you are looking for is ZDSM2020 w/SPC.

Check it out here.

ZDSM2420-SPC

The By-Pass Damper you are looking for is ZDSM2420 w/SPC.

Check it out here.

ZDSM3024-SPC

The By-Pass Damper you are looking for is ZDSM3024 w/SPC.

Check it out here.

$0

SPRD – Static Pressure Regulating Damper


Description

Model: SPRD

This barametric by-pass damper is a single blade, counter balanced weighted damper that operates on air pressure in order to control the flow of by-pass air. The SPRD has an adjustable arm and weight to maintain the correct amount of pressure in the duct system.

 

Sizes: 12×8, 12×10, 12×12, 20×8, 20×10, 20×12 (custom sizes available and will ship 4 days after receipt of order)

Order as: SPRDwwhh

+ SPRD Operation & Installation Sheet