ACTUATORS ARE INSTALLED ON THE 2ND DIMENSION, PHOTO IS GENERIC AND MAY NOT REPRESENT THE PART BEING ORDERED
20X8 Rectangular Manual Bypass Damper
GENERAL 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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Quick Shipping and Professional Packaging
Due to our long-term partnership in a long-standing partnership with UPS, FedEx, DHL and many other top global carriers we are able to offer a variety of shipping options. Our warehouse staff are highly trained and will be able to pack your goods in accordance with our exact and precise specifications. Your items will go through an exhaustive examination before they will be properly packaged prior to being sent out. We ship to thousands clients each day across multiple countries. This is a sign of our dedication to being the biggest online retailer in the world. The warehouses and centers of distribution are in Europe, as well as the USA.
Orders with more than 1 item are assigned processing times for each item.
Prior to shipping, we will examine thoroughly the items you've purchased. Currently, most orders are delivered within 48 hours. The delivery time will be between 3-7 days.
Returns
Stock is dynamic, and is not completely managed by us due to the involvement of several parties including the factory and our warehouse. The actual inventory may be changed at any time. It is possible that stock may run out after your order has been processed.
The period of time is 30 days. We are unable to exchange or refund your order if it has been 30 days since you purchased it.
Your item should be in the original packaging and be unused. It must also be returned in the original packaging.
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