Question 1

Is this compatible with the Siemens czv222?

Accepted Answer

If you want to use the completed product, the iLAN zone valve (including the head & brass body), then compatibility is not the case here. But if you want to replace the head and fit it on the Siemens brass body, it is incompatible.

Question 2

Using to turn of water to outside tap. Reduces flow, but only about 50%. Fitted correct way round, two different valves tried - same result. Any ideas

Accepted Answer

I wonder if you are using this to control a mains water supply. Although the OG item will handle 8bar static pressure, much more than mains pressure, I really don't know if these control heads will hold in this sort of application. It could be that the return spring is too weak in these clones compared to the original. I don't know how these work out with pumped pressure as opposed to 5/6 meters of static pressure, maybe you are using it with a pump permanently running? FWIW, I didn't use the one I bought as there were a couple of things I didn't like compared to the original goods.

Question 3

Is this a replacement for the Boss therm bzv222 .

Accepted Answer

The item I purchased is the just replacement head for a motorised two port valve, not the complete valve. If it is just the head you need to replace, then from what I can make out from the data sheet, the BZV valve head is removed by pressing a button on the side. If this is the case with your valve, then I doubt that THIS replacement head will fit. IF your valve head is held on by two screws which you can get at only by taking off the metal cover, then THIS replacement head will probably fit - it seems several manufacturers of both the valve body and the drive mechanism have all based their designs on the original Honeywell one, and they seem to be generally interchangeable. If you cannot find a replacement head for your BZV valve, then a complete new valve may be the only answer. (It might also be a cheaper answer, although you will need to at least partially drain the system to fit the new valve).

ASIN	B0BPRJVHNY
Best Sellers Rank	39,533 in DIY & Tools ( See Top 100 in DIY & Tools ) 417 in Central Heating System Accessories
Brand	iLAN
Connector Type	Screw Terminal
Country of Origin	China
Customer Reviews	4.3 4.3 out of 5 stars (114)
Exterior Finish	Alloy Steel
Included Components	Motor, Mounting screws
Inlet Connection Size	22 Millimeters
Inlet Connection Type	Threaded
Item Dimensions	12 x 7.5 x 7.5 centimetres
Item Type Name	Motorised Zone Valve Powerhead
Manufacturer	iLAN
Manufacturer Warranty Description	12 months.
Material	Alloy Steel
Model Number	PZV22-2-230
Number of Items	1
Number of Packs	1
Number of Pieces	1
Number of Ports	2
Outlet Connection Size	22 Millimeters
Part Number	PZV22-2-230
Size	7.5 cm (W) x 12 cm (L) x 7.5 cm (H)
Thread Size	22mm or 28mm
Thread Type	22mm or 28mm
Unit Count	1.0 count
Valve Type	Zone Valve

2 Port 22mm or 28mm Motorised Zone Valve Powerhead Replacement for V4043H1056 V4043H1106 V4043H1007 V4043H1080 V4043C1156 (2 Port Actuator)

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