My valve has V4073A1039 written on the back. Is a V4073 the same as this?
Bob
My valve has V4073A1039 written on the back. Is a V4073 the same as this?
Bob
Yes and no! There are several versions of the V4073A, with different water connections as follows:
V4073A1039
22mm compression. 6.0 KV. Maximum close-off differential pressure 0.69 barV4073A1054 As above, but 3/4" BSP Female
V4073A1088
28mm compression. 8.1 KV. Maximum close-off differential pressure 0.55 barV4073A1062 As above, but 1" BSP Female
All the above taken from Honeywell's spec sheet. No idea what the 6.0 and
8.1 KV refer to!HTH!
If this is a question on replacement for one that has failed, you are aware that the head actuator is available separately?
Mine unfortunately last me a couple of years, either the switch dies or the motor. I now have enough to do Frankenstein remodels.
In my case, motors from eBay for about a fiver, micro-switches salvaged from scrap microwave door interlock.
A replacement for one where the valve is broken. The system was drained down for over a year, and the valve will not close to the HW only position. I took the head off and found it did not have full travel.
Bob
Thanks! As long as I get a 22mm one I should be fine.
KV to me would mean kilo volts. It must mean something else in this case.
Bob
Its the flow rate through the valve at a given differential pressure on the system (a bit like a resistance value).
I have no idea how to correctly calculate the right one for a given system, I generally (possibly wrongly) replace with the same as I took out.
TW
Yes - it certainly doesn't mean that in this case!
Looking more closely at the spec sheet, it appears to be something to do with flow vs pressure drop - with the larger 28mm/1" valve passing a greater flow at a given pressure drop than its smaller 22mm/ 3/4" cousin. I'm still no wiser as to what KV stands for nor, indeed, CV where - according to the chart - CV = 0.97 x KV ! FWIW, pressure drop seems to be measured in 'mwc' - and I'm not sure what that is either.
Or kV to the rest of us (kilo with a lower case "k")
Also IIRC some versions are diverters, some are mid-position.
Is that not the V4043 ?
Dunno, and cba to chase the specs, but ISTR ordering a vanilla Honeywell
3-port over th'interwub blithely assuming that only the first 6 characters of the part code would be significant and finding I'd got the diverter rather than the mid-pos.HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.