As a hydronic design engineer, for residential systems I ALWAYS zone with pumps.
In the past circulators use to cost more than zone valves, but that is simply not the case anymore. Manufactures like Grundfos, Taco, Bell & Gossett, etc all make cartridge circulators that should fit your application (pump sizing still needs to be performed however). You can buy a zone circulator for around $80 and a zone valve of any decent quality is going to run you in the neighborhood of $70. Not to mention having multiple zones, if one pump does happen to go down, you still aren't dead in the water.
The second item is simplicity (pump zoning) - Thermostat calls, pump turns on, boiler starts. (Valve zoning) - Thermostat calls, valve actuates, end switch makes, pump starts, boiler starts.
The third pro in pump zoning is the simplicity of controls. You do not have to run extra wiring for zone valve end switches.
This is overly simplified, but I can honestly say I haven't designed or quoted a RESIDENTIAL job in years using zone valves...and there is a reason for that.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
