by Cody Mack, National Training Manager, Caleffi North America
As featured in the PHC News December 2022 issue, our very own Cody Mack weighs both sides of the never ending debate: Zone valves or zone...
Greg and Dan share commonly asked questions from the Ask Caleffi Blog. During this episode, they will zero in on heating products. You'll learn:
→ Can I add an air vent onto a Caleffi dirt separator?
→ How do I determine head loss in a hydraulic separator?
→ Can I order your Z-one zone valve with differing...
It seems that hydronic zone valves have been around forever. They are pretty bulletproof! But do you hear about end switches failing? What's going on? AND... what do I need to know before wiring a zone valve?
In this Episode, Greg and Dan discuss this common question from our Technical Support line: What's wrong with my...
The new long 3/4" press tailpiece was developed mainly for two purposes: 1) the need for a 3/4" press fitting with integral check valve and 2) to provide an installer extra "lay length" to work with when replacing an old zone valve body, for example.
The Presscon...
A slip nut is used to connect a tailpiece to a valve body when the nut inside diameter is too small to fit over the outer diameter body of the tailpiece. Examples are shown on page 75 of the List Price Catalog March 2016 and in the...
Yes, you can! The Caleffi Z2 and Z3 valve bodies are available with 1" male union (straight) threads. The 2-way body is code number Z200687 and the 3-way body is...
Yes, we do! Domestic hot water is sometimes used for heating applications; for example, the heat emitter in a fan coil, in addition to providing hot water for typical showers, etc. This is called an open system: the water originates as potable water from the local water utility or well and eventually ends up in a drain....
The 6440 Series actuator from Caleffi accepts a "floating" (a.k.a. 3-position) control signal, which is a 3-wire method of doing simple modulating. Here is how it works:
On the 6440, there is a common wire (blu), an "open...
