ACTUATORS ARE INSTALLED ON THE 2ND DIMENSION, PHOTO IS GENERIC AND MAY NOT REPRESENT THE PART BEING ORDERED
20X12 Rectangular Manual Bypass Damper
Description
The model PRD Pressure Regulating Bypass Dampers are a single blade rectangular barometric damper assembly with a counter balanced weighted arm. The barometric bypass damper is an economical way to manage the duct static pressure when zone dampers close. Bypass Damper adjustment is achieved by off-setting the hex shaped arm, securing weight #1 towards the bottom of that arm and moving the extra weight(s) (optional) up or down the arm, until the desired action is achieved. Additional weights can be added if necessary. See Page 3 for details. The damper can be mounted to relieve static pressure by returning the air back to the return air duct or by dumping it into a non-critical conditioned area. A restricting hand damper (part# ND-HD) should be installed downstream of the PRD by-pass damper, which allows the installer to set the desired pressure drop across the bypass duct, thereby controlling how much by-pass air mixes with the return air. See Application Note 090376A0169 rev F. Together, the PRD and ND-HD are an effective low cost bypass solution, for any residential zoned HVAC system.
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Our long-standing partnership with UPS FedEx DHL and other global carriers allows us to offer various shipping options. Our warehouse employees will pack all goods to our exacting requirements. Your products will go through an exhaustive inspection and securely secured prior to being delivered. We ship to thousands clients each day across multiple countries. This is a testament to our dedication to being the largest online retailer worldwide. We have distribution centers and warehouses located in Europe and the USA.
Note: Orders that include more than one item will be assigned a processing date in accordance with the item.
Prior to shipping, our team will perform an exhaustive inspection of the items you purchased. Today, the majority orders will be delivered within 48 hours. The estimated delivery time is between 3-7 days.
Returns
The stock is dynamic and we are unable to completely manage it because multiple parties are involved, which includes our warehouse and factory. This means that the actual stock could fluctuate at any moment. Please be aware it's possible your order could run out of stocks once you've placed your order.
Our policy is valid for 30 days. We cannot return or exchange your purchase if it has been 30 days since you purchased it.
To be returned, it must be unopened and in the same state as you received it in. You must have the item in the original packaging.
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